Prices reviewed ·

Today’s sodium hydroxide export price: flakes, pearls and liquid FOB Mersin

The caustic soda (sodium hydroxide, NaOH) price today is $840/MT for flakes 98–99%, $570–640/MT for pearls 99% and $600/MT for liquid NaOH 48–50% packed in IBC tanks or PE drums. Every price is FOB Mersin, Türkiye. That is $0.84 per kg for flakes, $0.57–0.64 per kg for pearls and $0.60 per kg of solution for liquid. These are SUHA International Trading's export levels, effective 1 November 2026. Flakes rose $55/MT on higher raw-material and energy costs, driven partly by the US–Iran war and the closure of the Strait of Hormuz. For the landed cost at your own port, see the caustic soda price by country page.

Product · packingUSD per metric ton FOB Mersin · vs October
Flakes NaOH 98–99%25 kg PP palletised · 25 kg in 1 MT jumbo
840USD/MT FOB Mersin
+$55 versus October flakes 98% FOB Mersin
Pearls NaOH 99%25 kg PP palletised · 25 kg in 1 MT jumbo
570–640USD/MT FOB Mersin
0.0% versus October
Liquid NaOH 48–50%IBC tank · PE drum, packing included
600USD/MT FOB Mersin
New basis: packed liquid replaces the earlier bulk ISO tank offer
Loading portMersin (Türkiye) · road to neighbouring markets
IncotermsFOB · CFR · CIF
Minimum order1 FCL (20ft or 40ft)
Packing25 kg PP palletised · 1 MT jumbo · IBC · PE drum

How much is caustic soda per ton and per kg today?

Caustic soda is traded per metric ton (MT), not per kilo. As of , indicative export prices FOB Mersin, Türkiye are:

Assessed by the SUHA International Trading export desk from current offers for 1–3 container lots. From 1 November 2026 all grades load at Mersin: flakes are one 98–99% grade at $840/MT, up $55 on higher raw-material and energy costs linked to the US–Iran war and the Strait of Hormuz closure; pearls are unchanged and liquid is now quoted packed. Offices in Dubai, UAE and Ankara, Türkiye.

At a glance · USD per MT FOB Mersin

Flakes 98–99%840
Pearls 99%570–640
Liquid 48–50%, packed600
Minimum order1 FCL
Quote turnaround24 h

FOB Mersin, including export packing, IMDG Class 8 port handling and export documents. CIF levels are on the price by country page.

FOB price list

Caustic soda price list — November 2026

Indicative FOB Mersin sodium hydroxide prices effective , including export packing, dangerous-goods port handling at Mersin and the standard export document set.

Caustic soda FOB Mersin prices by product, specification and packing, reviewed 7 November 2026
ProductSpecPackingLoading portFOB pricevs OctoberMinimum order
Flakes 98–99% NaOH 98–99% 25 kg PP bags palletised and shrink-wrapped · 25 kg PP bags in 1 MT jumbo bags Mersin (TR) 840 USD/MT +$55 1 FCL
Pearls 99% NaOH 99% min 25 kg PP bags palletised and shrink-wrapped · 25 kg PP bags in 1 MT jumbo bags Mersin (TR) 570–640 USD/MT 0.0% 1 FCL
Liquid 48–50% NaOH 48–50% solution IBC tank · PE drum (packing included in price) Mersin (TR) 600 USD/MT New basis 1 FCL

Flakes change is measured against October's flakes 98% level of $785/MT FOB Mersin (+7.0%). The increase passes through higher raw-material and energy costs — see why the caustic soda price rose. Liquid caustic soda was previously offered in bulk ISO tanks at 30–50% from Jebel Ali; the packed 48–50% offer is a different product basis, so no percentage change is shown.

Estimate your order value

Enter tonnage in metric tons
Indicative FOB Mersin value
$21,000
Price basis$840/MT
Per kg$0.840
Per lb$0.381
Per 25 kg bag$21.00
Confirm this price on WhatsApp

FOB Mersin value only — ocean freight, insurance, duty and VAT are excluded. Liquid load per container depends on IBC or drum packing and is confirmed with the quote.

Why these FOB levels differ from published spot indices

Published indices such as ICIS, ChemAnalyst, IMARC or Procurement Resource mostly track bulk contract cargoes and domestic assessments, which sit structurally below containerised business. Prices on this page are for containerised 1–3 FCL lots, and the FOB Mersin number already carries export packing (palletised and shrink-wrapped bags, jumbo bags, IBC tanks or PE drums), dangerous-goods port handling (UN 1823 / UN 1824, IMDG Class 8), SGS/BV inspection readiness and the full export document set. That is a difference of trade format, not of product quality.

We also supply soda ash and sodium hypochlorite, quoted on the same terms.

Price per kg, bag, pound and gallon

Sodium hydroxide price per kg, per 25 kg bag and per pound

The same November 2026 FOB Mersin levels converted into every unit buyers search for. One metric ton is 1,000 kg, 40 bags of 25 kg, 2,204.6 lb or 1.102 US short tons. The last column divides by purity to give the cost of the NaOH you actually receive — the only fair way to compare grades.

Caustic soda FOB Mersin price per metric ton converted to price per kg, per 25 kg bag, per pound, per US short ton and per ton of contained NaOH, November 2026
GradePer MTPer kgPer 25 kg bagPer lbPer short tonPer MT of NaOH
Flakes 98–99%$840$0.84$21.00$0.38$762$848–857
Pearls 99%$570–640$0.57–0.64$14.25–16.00$0.26–0.29$517–581$576–646
Liquid 48–50%$600$0.60IBC / drum only$0.27$544$1,200–1,250

Sodium hydroxide price per gallon. A US gallon of 48–50% NaOH solution (density about 1.50–1.53 g/cm³) weighs roughly 5.7–5.8 kg, so liquid caustic soda at $600/MT equals about $3.40–3.50 per gallon FOB Mersin, packed in IBC tanks or PE drums.

Why a 1 kg retail pack costs far more. A shop price for 1 kg of caustic soda includes repacking into small containers, retail margin, local distribution and tax, so it is typically several times the $0.57–0.84 per kg that the same material costs by the container. The figures above are export FOB prices for full container loads, not retail prices.

Price trend and chart

Caustic soda price trend — August to November 2026

Our own FOB Mersin levels at each monthly review. Flakes stepped up to $840/MT in November as a single 98–99% grade, on higher raw-material and energy costs; pearls have held at $570–640 since October.

Flakes FOB Mersin ▲ +$55

Aug 2026780
Sep 2026780
Oct 2026785
Nov 2026840

Pearls 99% FOB Mersin → $0

Aug 2026560–630
Sep 2026560–630
Oct 2026570–640
Nov 2026570–640

Liquid 48–50% FOB Mersin New basis

$600/MT

From November 2026 liquid caustic soda is quoted at 48–50%, packed in IBC tanks or PE drums, FOB Mersin. Until October it was offered at 30–50% in bulk ISO tanks from Jebel Ali at $270–340/MT. Packing, concentration and loading port all changed, so the two series are not charted together.

USD per metric ton, FOB Mersin. Flakes bars run on a fixed $700–900 scale; August–October are the flakes 98% Mersin level, November is the combined 98–99% grade. Pearls bars show each month's low–high band on a $500–700 scale, so a shift to the right is a price rise.

Reading the market

Caustic soda price index: why published indices disagree

Before you benchmark a quotation against a caustic soda price index or chart, check that the two describe the same thing. For the same quarter and the same country, two major providers can be several hundred dollars apart — because they measure different purity bases, trade formats and delivery terms.

Published index assessments for caustic soda: ChemAnalyst and IMARC for Q2 2026, Procurement Resource for August 2026, by country
CountryChemAnalyst Q2 2026IMARC Q2 2026Procurement Resource Aug 2026Spread
United States589 USD/MT358 USD/MT399 FOB1.6×
Brazil570 USD/MT643 USD/MT237 CIF2.7×
India—373 USD/MT185 CIF2.0×
Germany804 USD/MT—356 FOB2.3×
Japan451 USD/MT427 USD/MT—1.1×
Saudi Arabia631 USD/MT———

The three questions to ask about any caustic soda number. First, what basis? A 50% liquid quoted per ton of solution is roughly half the price of the same NaOH quoted on a 100% dry basis. Second, what trade format? Bulk contract parcels of thousands of tons price well below containerised lots with bagging and dangerous-goods handling. Third, what Incoterm? An ex-works or domestic assessment carries no freight, no DG surcharge and no export documentation.

Germany shows why this matters: ChemAnalyst's Q2 2026 assessment was about $804/MT, while Procurement Resource put German FOB at about $356/MT for August 2026 — the two are not measuring the same trade. Monthly per-kilogram indices tell a similar story: BusinessAnalytiq held North America at about $0.28/kg, Europe at $0.29/kg and Northeast Asia at $0.11/kg for September 2026, each on its own basis.

Index figures for China are often domestic yuan prices converted at a point in time, or liquid prices on a 100% basis, so they are left out here; for a like-for-like export number see the China caustic soda price FOB Xingang.

Until those three questions match, comparing two numbers tells you nothing. The figures on this page are stated unambiguously: USD per metric ton, FOB Mersin, containerised and packed, one full container minimum, DG port handling and export documents included.

Index figures above are as published by each provider ("—" where we found no figure for that period; "Spread" is highest ÷ lowest figure in the row) and are reproduced for methodological comparison only. They are not SUHA International Trading assessments and we do not resell index data — see the references at the foot of this page.

Price by product

Flakes, pearls and liquid: caustic soda price by grade

Three commercial forms of the same compound, all loaded at Mersin. Purity, packing and freight economics decide which one is cheapest for your plant.

99% min · UN 1823

Caustic soda pearls price

$570–640USD / MT FOB Mersin

Our only 99% grade: uniform particle size and far less dust on handling — the usual choice for food-grade processing, pharmaceutical work and automated dosing systems.

Automated dosingLow dustHigh purity
Spec
NaOH 99% min
FOB Mersin
$570–640/MT
Packing
25 kg PP palletised + shrink · 25 kg in 1 MT jumbo
Minimum order
1 FCL (20ft or 40ft)
Per 25 kg bag
$14.25–16.00
HS code
2815.11
48–50% · UN 1824

Liquid caustic soda price

$600USD / MT FOB Mersin, packed

Ready-to-dose solution in IBC tanks or PE drums, with packing included. No dissolving step, no dust and no dissolving exotherm — suited to water treatment, cleaning and smaller plants without dissolving equipment.

No dissolvingSmaller plantsDirect dosing
Spec
NaOH 48–50% solution
FOB Mersin
$600/MT incl. packing
Packing
IBC tank · PE drum
Minimum order
1 FCL
Per kg of solution
$0.60
Per US gallon
≈ $3.40–3.50
HS code
2815.12

Flakes or liquid — which is actually cheaper? Compare on contained NaOH, not on product weight. Liquid at $600/MT of 48–50% solution works out to about $1,200–1,250 per MT of contained NaOH; flakes 98–99% at $840/MT work out to about $848–857 per MT of contained NaOH. On top of that you pay freight, handling and duty on the water in a liquid shipment. So per unit of NaOH, flakes and pearls are clearly the cheaper buy. Packed liquid earns its premium on handling: no bag opening, no dust, no dissolving tank and no exotherm risk of the kind described in our guide to storing caustic soda safely. See also our flakes vs liquid comparison.

Bulk buying

Bulk and wholesale caustic soda price — in Türkiye and the UAE

The price list above is already a wholesale price: one full container is the smallest lot. What moves your number from there is volume, contract length and where you take delivery.

Wholesale price by order size

  • 1–2 FCL spot: quoted at the levels on this page, firm for 7 days.
  • 3+ FCL per shipment: pearls generally price at the lower end of the range; ask for a volume quote on flakes and liquid.
  • Quarterly or annual contract: quoted separately from repeated spot loads — state your yearly tonnage even if you ship one container at a time.

Caustic soda price in Türkiye

$840/MT FOB Mersin

Mersin is our loading port for every grade. We deliver by truck across Türkiye from stock in Ankara and Istanbul, and ship to neighbouring markets both by sea and overland by road. See caustic soda supplier Türkiye.

Caustic soda price in the UAE

FOB Mersin + freight

From November 2026 all offers are FOB Mersin. UAE buyers receive a CFR or CIF Jebel Ali quotation through our Dubai office, with freight re-checked on each enquiry while Gulf shipping remains disrupted. Details are on the caustic soda supplier UAE page.

From FOB to landed cost

CIF caustic soda price: what the same cargo costs at your port

Add ocean freight on your lane to the FOB Mersin price and you get the CIF landed cost. Two worked examples for flakes 98–99% at $840/MT FOB Mersin, for one 20ft FCL. Destination terminal handling, duty, VAT and inland delivery are excluded.

Two worked CIF examples for caustic soda flakes 98–99% shipped from Mersin, November 2026
Destination portCountryEst. freight from MersinIndicative CIF
AlexandriaEgypt$40–60/MT880–900 USD/MT
Lagos (Apapa)Nigeria$130–170/MT970–1,010 USD/MT

Freight advisory — November 2026

All cargo now loads at Mersin, on the Mediterranean, so shipments to Mediterranean, Black Sea, West African and Atlantic destinations stay clear of the Strait of Hormuz, where commercial traffic has been sharply reduced since 28 February 2026 and the strait is now closed by the US–Iran war. For destinations inside the Gulf, including the UAE, freight is re-checked on every quotation and can carry a war-risk surcharge or a longer schedule.

Freight is an estimate and moves with carrier space, bunker levels and dangerous-goods acceptance. For a firm CIF number to your port, message the logistics desk on WhatsApp or use the enquiry form.

Market intelligence

What is driving caustic soda market prices in H2 2026?

Caustic soda and chlorine are co-produced in a fixed ratio — roughly 1.1 tonnes of NaOH per tonne of chlorine — so supply is set largely by chlorine and PVC economics, while demand comes from alumina, pulp and paper, textiles, soaps and water treatment. That mismatch is why the market behaves the way it does.

Downward pressure

  • China is the largest producer — about 47 million tonnes in 2025 — and exported about 4.1 million tonnes, so its surplus keeps pressure on Asian export prices
  • Softer alumina refining demand, including permanent refinery closures in Australia and alumina buyers in China cutting purchase prices in mid-2026
  • Indian producers running at high rates and adding flaking capacity, which reduces India's need for imports
  • Pulp and paper mill closures and curtailments in North America through 2025–2026

Upward pressure

  • Electricity is a large share of chlor-alkali production cost, so power tariffs feed straight through
  • Permanent European closures during 2025 — Fortischem, Spolana, Vencorex and Arkema Jarrie — with Dow signalling an exit from Schkopau by 2027; German chlor-alkali utilisation fell to about 65% in July 2026
  • The US–Iran war and the closure of the Strait of Hormuz, which lifted energy and raw-material costs, raised North American prices about 3.7% in March and triggered dozens of force majeure declarations across Asia and the Middle East
  • Dangerous-goods surcharges on ocean freight, typically 15–30% over ordinary cargo, are not easing

What to watch through Q4 2026

  • Whether weak PVC margins force real chlor-alkali rate cuts rather than paper ones
  • Alumina restarts or further closures — the single biggest demand swing factor
  • European inventories going into winter, after stocks fell sharply in summer
  • Container availability for IMDG Class 8 cargo and war-risk premiums on Gulf lanes

Why the caustic soda price rose in November 2026. Flakes moved from $785 to $840/MT FOB Mersin (+$55, +7.0%) because our raw-material and production costs went up. Chlor-alkali output depends on salt, electricity and — for flakes — the fuel used to evaporate the 50% liquor and flake it, so energy prices pass straight into the cost of every ton. A large part of this month’s increase comes from the US–Iran war and the closure of the Strait of Hormuz, which has pushed up oil, LNG and power prices and tightened supply of Gulf-origin caustic soda and feedstock.

Pearls were held at $570–640/MT, and all grades now load at Mersin on the Mediterranean, so our own cargo does not have to pass through Hormuz. Third-party data point the same way for the Gulf: Price Watch recorded FOB flakes in Jebel Ali up about 5% and in Jeddah up about 6% in September 2026, while US and Asian lye benchmarks were still falling.

Caustic soda price change by market and basis, Q3 2026 and September 2026, as published by Price Watch
MarketForm · basisQ3 2026 vs Q2September 2026 vs August
UAE, Jebel AliFlakes · FOB−4%+5%
Saudi Arabia, JeddahFlakes · FOB−6%+6%
China, QingdaoFlakes · FOB−14%Stable
India, BharuchFlakes · ex-works−13%−1%
USA, HoustonLye · FOB−14%−7%
Germany, HamburgLye · domestic−12%−2%
Brazil, SantosLye · CIF from USA−13%−6%

Percentage changes as published by Price Watch for each market's own grade and Incoterm; they describe direction, not price levels, and are not SUHA International Trading assessments.

Q2 2026 set the tone for the second half. Published assessments for the quarter showed increases in most regions: the United States up about 7% quarter on quarter, Japan up roughly 11% on LNG-linked power costs, Saudi Arabia up about 13% on export pull, Brazil up around 15% on freight, and Germany up more than 50% as maintenance-driven tightness collided with the 2025 capacity closures.

Q3 2026 eased on most benchmarks. Monthly data for August showed US FOB about 3% lower month on month at roughly $399/MT, German FOB about 1% lower near $356/MT, India CIF down about 8% and Brazil CIF down about 11%, while Chinese FOB flake offers eased, with Qingdao about 14% lower in Q3 than in Q2. Analysts expect a steady range into year-end, with lower European stocks offsetting ample Asian supply.

Our own November level of $840/MT for flakes FOB Mersin is a containerised, packed export price with DG handling and documents built in. It follows our own raw-material and energy costs rather than the bulk benchmarks one for one, which is why the index section above shows the gap explicitly.

Caustic soda price in China vs Mersin. China-origin flakes carry a lower FOB price — see the China caustic soda price for today's FOB Xingang offer — but the delivered comparison changes once you add the longer voyage from northern China, more working capital tied up in transit, and destination rules on some Chinese-origin chemical shipments. For buyers in the Mediterranean, Black Sea, Europe and North Africa, Türkiye-origin supply usually trades an FOB premium for shorter lead times and truck delivery. We supply both origins, so we can quote whichever gives the lower landed cost at your port. More about how we work →

Methodology

How these caustic soda prices are assessed

Transparency matters when a number goes straight into your costing sheet. Here is exactly what these figures represent.

Source of the numbers

Prices are built from SUHA International Trading's own confirmed offers and concluded export business out of Mersin during the current month, then cross-checked against published regional indices.

What is included

FOB Mersin, export packing as stated (palletised and shrink-wrapped 25 kg bags, 1 MT jumbo bags, IBC tanks or PE drums), DG port handling for IMDG Class 8, and the standard document set: invoice, packing list, B/L, COA, safety data sheet and certificate of origin.

What is not included

Ocean freight and its dangerous-goods surcharge, marine insurance (unless CIF), destination terminal handling, import duty, VAT, inland delivery, demurrage, and any third-party inspection you order. Lane-by-lane freight sits on the price by country page.

Update cycle

Reviewed at the start of each month and whenever the market moves more than about 3%. Last price change: 1 November 2026; last review: 7 November 2026; next scheduled review: early December 2026. Issued quotes are firm for 7 days, subject to stock. Checks on arrival are covered in how to check caustic soda quality.

Outlook to year-end

Caustic soda price forecast for the rest of 2026

Projected FOB Mersin bands for November–December 2026, each no wider than $30/MT. Asian oversupply and soft alumina demand cap the upside; energy and raw-material costs tied to the Hormuz closure, the permanent European closures of 2025 and low European stocks limit the downside. Treat these as planning ranges, not guarantees.

Flakes 98–99% FOB
825–855
USD/MT
→ Range-bound
Pearls 99% FOB
590–620
USD/MT
→ Stable
Liquid 48–50% FOB, packed
585–615
USD/MT
→ Stable
Expected monthly move
± 15
USD/MT, all grades
▲ Upside risk: Hormuz

Procurement note: with the market range-bound rather than trending, buyers taking regular volume usually do better covering 50–60% on a quarterly contract and leaving the balance to spot, instead of trying to time a bottom. CIF bands for every other destination are in the price by country table.

Product data

Sodium hydroxide identifiers, packing and trade terms

The reference data buyers and customs brokers ask for with a caustic soda price, in one table.

Caustic soda flakes, pearls and liquid: purity, identifiers, packing and trade terms
ItemFlakesPearlsLiquid
NaOH content98–99%99% min48–50%
HS code2815.112815.112815.12
UN number · classUN 1823 · 8UN 1823 · 8UN 1824 · 8
CAS · EC number1310-73-2 · 215-185-51310-73-2 · 215-185-51310-73-2 · 215-185-5
Packing25 kg PP palletised + shrink · 25 kg in 1 MT jumbo25 kg PP palletised + shrink · 25 kg in 1 MT jumboIBC tank · PE drum
Load per 20ft≈ 25 MT≈ 25 MTConfirmed with quote
FOB Mersin$840/MT$570–640/MT$600/MT
Also known asNaOH flakes, lye, soda lyePrills, beads, micropearlsLye solution, membrane-grade liquor
Explore

Landed cost by destination, grade specifications and industry guides for everything we load at Mersin.

Common questions

Caustic soda price FAQ

The questions buyers ask most about sodium hydroxide pricing — per ton, per kg and per bag — plus packing, classification and shipping.

Price today and trend

As of , indicative export prices for caustic soda (sodium hydroxide, NaOH) FOB Mersin, Türkiye are $840/MT for flakes 98–99%, $570–640/MT for pearls 99%, and $600/MT for liquid caustic soda 48–50% packed in IBC tanks or PE drums. All include export packing and dangerous-goods port handling. For the landed cost at your own discharge port, see the caustic soda price by country page.

Yes. From 1 November 2026 flakes are sold as one 98–99% grade at $840/MT FOB Mersin, up $55/MT from October’s flakes 98% level of $785. Pearls 99% are unchanged at $570–640/MT. Liquid caustic soda is now quoted at 48–50%, packed in IBC tanks or PE drums, at $600/MT; it replaces the earlier bulk ISO-tank offer, so the two are not directly comparable. All grades now load at Mersin. The next scheduled review is early December 2026.

Our flakes price rose from $785 to $840/MT FOB Mersin because raw-material and energy costs went up. Caustic soda is made by electrolysis of salt brine, and flakes also need fuel to evaporate and flake the liquor, so power and fuel prices pass straight into the cost per ton. Much of the increase comes from the US–Iran war and the closure of the Strait of Hormuz, which raised oil, LNG and electricity prices and tightened Gulf-origin supply. Pearls were held unchanged at $570–640/MT.

In two ways. It raises production cost everywhere energy is imported, because oil, LNG and power prices rise; and it cuts or delays caustic soda and feedstock leaving Gulf ports such as Jebel Ali, Jubail and Dammam, which firms prices in the Middle East and East Africa. Gulf FOB flakes rose about 5–6% in September 2026. Our cargo loads at Mersin on the Mediterranean, so it does not transit Hormuz; only destinations inside the Gulf carry extra freight and war-risk cost.

Yes, several. ChemAnalyst and IMARC publish quarterly assessments per metric ton by country, Procurement Resource publishes monthly regional levels (US FOB about $399/MT in August 2026), and BusinessAnalytiq publishes a free monthly index per kilogram, which held at about $0.28/kg for North America, $0.29/kg for Europe and $0.11/kg for Northeast Asia in September 2026. Each one measures a different basis and trade format, so use them for direction, not as a quotation. Our own monthly FOB Mersin levels are charted in the price trend section of this page.

For November–December 2026 we expect flakes 98–99% to hold in an $825–855/MT FOB Mersin band, pearls 99% at $590–620, and packed liquid NaOH 48–50% at $585–615, with monthly moves of about $15/MT. Asian oversupply and softer alumina demand cap the upside, while energy and raw-material costs tied to the Strait of Hormuz closure, the permanent European chlor-alkali closures of 2025 and low European stocks limit the downside.

Per kg, per bag and bulk price

Industrial caustic soda is traded per metric ton, not per kilo. At November 2026 FOB Mersin levels, flakes 98–99% work out to $0.84 per kg, pearls 99% to about $0.57–0.64 per kg, and packed liquid NaOH 48–50% to $0.60 per kg of solution. Retail and small-pack prices are several times higher because they carry repacking, retail margin and small-quantity handling costs.

At November 2026 FOB Mersin levels a 25 kg bag of caustic soda flakes 98–99% works out to $21.00, and a 25 kg bag of pearls 99% to about $14.25–16.00. Bags are not sold individually for export; the minimum is one full container load of about 25 MT, or 1,000 bags, shipped palletised and shrink-wrapped or packed inside 1 MT jumbo bags.

At November 2026 FOB Mersin levels, flakes 98–99% cost about $0.38 per lb, pearls 99% about $0.26–0.29 per lb and liquid NaOH 48–50% about $0.27 per lb of solution. A US gallon of 48–50% sodium hydroxide solution weighs about 5.7–5.8 kg, so the $600/MT liquid price equals roughly $3.40–3.50 per gallon. These are export FOB figures; US domestic delivered prices include inland freight and distributor margin.

The wholesale price is the container price on this page: $840/MT FOB Mersin for flakes 98–99%, $570–640/MT for pearls 99% and $600/MT for packed liquid 48–50%. Buyers taking three or more containers per shipment, or committing to quarterly volume, can ask for a volume quote. Annual contracts are quoted separately from repeated spot loads, so state your yearly tonnage in the enquiry.

In Türkiye the reference is $840/MT FOB Mersin for flakes 98–99%, with truck delivery across the country from stock in Ankara and Istanbul. All offers are now FOB Mersin, so UAE buyers receive a CFR or CIF Jebel Ali quotation through our Dubai office, with Gulf freight re-checked on each enquiry. See the Türkiye and UAE supply pages.

Comparing grades and indices

Because they measure different trade. Published indices track bulk contract cargoes and domestic assessments; this page quotes containerised 1–3 FCL export lots whose FOB Mersin number already carries export packing, IMDG Class 8 port handling, inspection readiness and the full document set. The indices also disagree with one another: for Q2 2026, ChemAnalyst assessed the United States at about $589/MT while IMARC put it at $358/MT for the same quarter. Always check what basis, purity and trade format a number refers to before comparing it with a quotation.

On our November 2026 levels pearls are the cheaper option: $570–640/MT FOB Mersin against $840/MT for flakes 98–99%. Pearls are also our only 99% grade and generate far less dust on handling, which makes them the better value for buyers whose process accepts either form.

Per ton of product, yes: packed liquid at $600/MT against flakes at $840/MT. Per ton of contained NaOH, no: a 48–50% solution at $600 equals about $1,200–1,250 per MT of NaOH content, against about $848–857 per MT of NaOH content for flakes. You also pay freight, handling and duty on the water. Flakes and pearls are therefore the cheaper source of NaOH; liquid in IBC tanks or PE drums is worth its premium where you want to dose directly with no dissolving equipment.

Shipping, minimum order and documents

A 20ft container takes about 25 MT of caustic soda flakes or pearls — 1,000 bags of 25 kg, either palletised and shrink-wrapped or packed in 1 MT jumbo bags. Liquid NaOH ships in IBC tanks or PE drums, and the load per container depends on the pack and concentration, so it is confirmed with the quote. The limit is payload weight, not volume, and several destination ports enforce road weight limits below the container maximum.

Ocean freight depends on the lane. From Mersin, Alexandria is roughly $40–60/MT and Lagos $130–170/MT. These are for one 20ft FCL and exclude destination terminal handling, duty and inland delivery. Lanes into the Gulf are re-checked on every quotation while the Strait of Hormuz disruption continues. Freight bands for 165 destinations are listed on the price by country page.

FOB (Free On Board) means the seller’s cost and risk end once the cargo is loaded at the origin port, so the buyer arranges and pays ocean freight. CFR (Cost and Freight) adds ocean freight to the named destination port. CIF (Cost, Insurance and Freight) adds marine insurance on top of CFR. FOB gives the buyer freight control; CFR and CIF give a single landed number to budget against. This page quotes FOB Mersin; the price by country page quotes CIF.

One full container load (1 FCL), in a 20ft or 40ft container: about 25 MT of flakes or pearls in a 20ft box, palletised or in jumbo bags, and one full container of IBC tanks or PE drums for liquid NaOH. Buyers taking three or more containers per shipment, or committing to quarterly volume, can ask for a volume quote.

Solid sodium hydroxide, including flakes and pearls, is classified under HS 2815.11. Sodium hydroxide in aqueous solution, known as soda lye or liquid caustic, is HS 2815.12. Some countries add national digits after the six-digit heading, so check your own tariff schedule before filing.

A standard export set includes the commercial invoice, packing list, bill of lading, certificate of analysis, safety data sheet, certificate of origin, and the Dangerous Goods Declaration required for IMDG Class 8 cargo. Third-party inspection by SGS or Bureau Veritas, and legalised documents, can be arranged where the destination requires them.

Yes. Solid caustic soda is UN 1823 and liquid caustic soda is UN 1824, both IMDG Class 8 (corrosive). Shipment requires UN-compliant packaging, corrosive labelling, a Dangerous Goods Declaration and a safety data sheet. Dangerous-goods port handling at Mersin is included in our FOB price; carriers add a dangerous-goods surcharge to the ocean freight, typically 15–30% over comparable non-hazardous cargo. See also our guide to safe storage and handling.

Yes. Caustic soda, sodium hydroxide and lye all refer to NaOH. Caustic soda is the industrial trade name, sodium hydroxide is the chemical name used on documentation and safety data sheets, and lye is the common name used in soap making and food contexts. Buyers also know it as الصودا الكاوية in Arabic, kostik soda in Turkish, едкий натр in Russian and sosa cáustica in Spanish. Flakes, pearls, prills, pellets and 48–50% solution are physical forms of the same compound.

References

Third-party index figures are cited for methodological comparison only and remain the property of their publishers. Prices quoted by SUHA International Trading on this page are our own export offers FOB Mersin, effective 1 November 2026 and reviewed 7 November 2026.

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