- Bulk and Wholesale Caustic Soda From Türkiye and the UAE
- What Is Caustic Soda? Sodium Hydroxide Properties, CAS and HS Code
- Caustic Soda Grades: Flakes, Pearls and Liquid
- Membrane Grade Caustic Soda: Why the Cell Process Matters
- Caustic Soda Specification and TDS
- What Is Caustic Soda Used For? 8 Industries
- Caustic Soda Packaging: 25 kg Bags, Jumbo Bags, IBC Tanks and Drums
- Caustic Soda Export: Ports, Incoterms and Delivery
- Caustic Soda Price per Ton: What Drives the Quote
- Wholesale Caustic Soda: Factory, Wholesale and Distributor Prices Explained
- Caustic Soda Suppliers, Manufacturers and Distributors: Where to Buy in Bulk
- Why Buy Caustic Soda From SUHA International
- How to Order Bulk Caustic Soda
- Caustic Soda Safety: Hazards, PPE and Exposure Limits
- Caustic Soda Supplier FAQ: Grades, Wholesale, MOQ, Shipping and Price
- Contact the Caustic Soda Export Desk
- Reach Out
- Top Products
- Contact Us
Bulk and Wholesale Caustic Soda From Türkiye and the UAE
Caustic soda is the trade name for sodium hydroxide (NaOH), also called lye. SUHA International Trading is a caustic soda supplier and exporter for bulk and wholesale buyers — importers, distributors and manufacturing plants. We are not a producer: we ship membrane-grade flakes 98–99%, pearls 99% and liquid 48–50% from Mersin (Türkiye) and Jebel Ali (UAE), with a certificate of analysis for every lot and a firm FOB or CIF quotation within 24 hours.
- Chemical
- Sodium hydroxide, NaOH
- CAS / EC
- 1310-73-2 · 215-185-5
- HS code
- 2815.11 · 2815.12
- Dangerous goods
- UN 1823 / 1824 · Class 8
- Minimum order
- 1 FCL, 20ft or 40ft
- Offices
- Dubai (head office) · Ankara
- Membraneproduction route only
- 98–99%flakes NaOH
- 99%pearls NaOH
- 48–50%liquid, IBC or drum
- COAwith every lot
- 24 hfirm quotation
What Is Caustic Soda? Sodium Hydroxide Properties, CAS and HS Code
Caustic soda is sodium hydroxide (NaOH), one of the highest-volume inorganic chemicals in world trade. Buyers search for it as caustic soda, sodium hydroxide, NaOH, lye or white caustic — all one substance, CAS 1310-73-2. It is a strong alkali that dissolves fats, oils, proteins and silica, which is why alumina refineries, pulp mills, water plants, textile mills, soap makers and refineries all depend on it.
Solid sodium hydroxide is white and hygroscopic: it pulls moisture and carbon dioxide from the air and slowly turns partly into sodium carbonate, so it ships in lined, sealed bags. It dissolves with strong heat release (about 44 kJ per mole), so it is always added to water, never the other way round. It is not the same as soda ash (sodium carbonate) or baking soda (sodium bicarbonate) — see caustic soda vs baking soda.
| Property | Value | Note |
|---|---|---|
| Chemical name | Sodium hydroxide, NaOH | Also caustic soda, lye, white caustic |
| Molar mass | 40.00 g/mol | 39.997 exact |
| CAS / EC number | 1310-73-2 · 215-185-5 | REACH-registered substance |
| Melting point | 318 °C (604 °F) | Anhydrous solid |
| Boiling point | 1,388 °C | Anhydrous solid |
| Density | 2.13 g/cm³ solid · ≈ 1.53 g/cm³ at 50% | At 20 °C |
| Solubility in water | ≈ 111 g / 100 mL | At 20 °C, strongly exothermic |
| pH, 1% solution | ≈ 13.4 | Strong base |
| HS code | 2815.11 solid · 2815.12 solution | Customs classification |
| UN number | UN 1823 solid · UN 1824 solution | Class 8, packing group II |
| GHS / CLP | Skin Corr. 1A (H314); H290 for solutions | Signal word “Danger” |
| Food additive | E524 | Food-grade material only |
Caustic Soda Grades: Flakes, Pearls and Liquid
Chemically the same alkali, commercially three different products. The right form cuts handling cost, dosing error and freight. Each card links to the full product page.
Caustic soda flakes
98% · 99% NaOH · HS 2815.11 · UN 1823
- Form
- White irregular chips
- Grade
- 98–99%, one grade
- Packing
- 25 kg bags, palletised or in jumbo bags
- Per 20ft
- ≈ 25 MT
Best for: alumina and mining, soap and detergent, textiles, pulp and general chemical use.
Caustic soda flakes supplierCaustic soda pearls
99% NaOH · HS 2815.11 · UN 1823
- Form
- Small free-flowing beads
- Grade
- 99% min
- Packing
- 25 kg bags, palletised or in jumbo bags
- Price vs flakes
- Lower on current offers
Best for: automated dosing, food and cosmetic processing, plants where dust exposure matters.
Caustic soda pearls supplierLiquid caustic soda
48–50% NaOH · HS 2815.12 · UN 1824
- Form
- Clear aqueous solution
- Strength
- 48% to 50%
- Packing
- IBC tanks or PE drums
- NaOH content
- ≈ 0.5 t per t shipped
Best for: water treatment, refinery caustic washing and plants that dose liquid directly.
Liquid caustic soda supplierFlakes vs pearls vs liquid: which should you buy?
| Criterion | Flakes | Pearls | Liquid |
|---|---|---|---|
| NaOH content | 98–99% | 99% min | 48–50% |
| Dust | Moderate | Very low | None |
| Dissolving on site | Yes, releases heat | Yes, releases heat | No |
| Dosing | Batch | Automated, volumetric | Metering pump |
| NaOH per tonne shipped | ≈ 0.98–0.99 t | ≈ 0.99 t | ≈ 0.48–0.50 t |
| Price position | Standard export benchmark | Below flakes on current offers | Lowest per tonne of product, but the highest per tonne of NaOH once long-haul freight is added |
| Cold weather | Cakes if damp | Little caking | 50% crystallises below ≈ 12 °C |
| Packing | 25 kg bags, palletised or in jumbo bags | 25 kg bags, palletised or in jumbo bags | IBC tanks or PE drums |
Compare cost per tonne of NaOH delivered, not per tonne of product. A 50% liquid carries half the alkali of flakes for the same freight, so for anything beyond a short haul, solid grades usually win unless your plant is built around liquid dosing. Details: flakes vs liquid caustic soda and types and grades of caustic soda.
Membrane Grade Caustic Soda: Why the Cell Process Matters
All sodium hydroxide comes from the chlor-alkali process: electricity passed through saturated salt brine gives caustic soda and hydrogen at one electrode and chlorine at the other. What separates the three cell types is how the product is kept away from the brine and chlorine — and that sets the chloride and mercury content you receive. Everything we supply is membrane grade.
| Cell type | Product quality | Status in 2026 | We supply |
|---|---|---|---|
| Membrane | Very low sodium chloride; no mercury or asbestos in the process | Dominant route worldwide; all new capacity | Yes — only this |
| Diaphragm | Higher salt content; some older plants use asbestos diaphragms | Legacy capacity, mainly North America | No |
| Mercury | Risk of mercury traces | Banned in the EU since Dec 2017; global phase-out date 2025 under the Minamata Convention | No |
After electrolysis the cell liquor is concentrated to about 50% for liquid grades. Solid grades go one step further: concentrated to a near-water-free melt, then flaked on a cooled drum or prilled into pearls. Membrane-grade material is what food, pharmaceutical, rayon and most high-purity duties specify. Full process: how caustic soda is made.
Caustic Soda Specification and TDS
Values below are taken from our published technical data sheets for each grade. The signed certificate of analysis for your lot is the document that governs. Download the TDS files and the safety data sheet below.
Caustic soda flakes 98–99% — technical data sheet
| Parameter | TDS value |
|---|---|
| NaOH | 98% ± 1% w/w |
| Sodium carbonate (Na₂CO₃) | 0.43% w/w |
| Sodium chloride (NaCl) | 0.0085% w/w |
| Sodium sulfate (Na₂SO₄) | 0.0047% w/w |
| Silica (SiO₂) | 0.0019% w/w |
| Iron (Fe) | 10 ppm |
| Aluminium oxide (Al₂O₃) | 3 ppm max |
| Heavy metals (as Pb) | 2 ppm max |
| Insoluble in water | 0% |
| Flake size | 0.3–1 cm |
Caustic soda pearls 99% — specification
| Parameter | Specification |
|---|---|
| NaOH | 99.0% min |
| Sodium carbonate (Na₂CO₃) | 0.8% max |
| Sodium chloride (NaCl) | 0.05% max |
| Iron (as Fe₂O₃) | 50 ppm max |
The pearls TDS states iron as Fe₂O₃; the flakes and liquid sheets state it as elemental Fe. 50 ppm Fe₂O₃ equals about 35 ppm Fe.
Liquid caustic soda 48–50% — specification
| Parameter | Limit |
|---|---|
| NaOH | 48% min |
| Sodium carbonate (Na₂CO₃) | 0.5% max |
| Sodium chloride (NaCl) | 0.03% max |
| Sodium sulfate (Na₂SO₄) | 0.007% max |
| Silica (SiO₂) | 0.01% max |
| Iron (Fe) | 10 mg/kg max |
| Heavy metals (as Pb) | 10 mg/kg max |
| Mercury (Hg) | 0.1 mg/kg max |
| Appearance | Colourless, clear, free of sediment |
The mercury line is a maximum limit carried on the TDS for buyers who test for it; membrane-cell production uses no mercury.
What Is Caustic Soda Used For? 8 Industries
Sodium hydroxide appears in almost every heavy industry. Each card says what it does there, which grade buyers usually choose, and links to the full guide.
Alumina and mining
Hot caustic liquor dissolves alumina from bauxite; caustic soda also controls pH in gold and copper circuits and neutralises acidic effluent.
Usual grade: flakes 98–99%
Caustic soda in miningWater treatment
Raises pH, adds alkalinity, controls corrosion and precipitates heavy metals in drinking-water and effluent plants.
Usual grade: liquid, or flakes made up on site
Caustic soda for water treatmentPulp and paper
White liquor of caustic soda and sodium sulfide dissolves lignin; caustic soda also drives bleaching extraction and de-inking.
Usual grade: liquid or flakes
Caustic soda in pulp and paperOil refining
Removes hydrogen sulfide and mercaptans from LPG, naphtha and gas streams and neutralises acidic refinery streams.
Usual grade: liquid
Caustic soda in oil refiningSoap and detergent
Turns oils and fats into soap and neutralises LABSA and other acid surfactants in detergent making.
Usual grade: flakes or pearls
Caustic soda in soap and detergentTextiles
Mercerising raises cotton strength, lustre and dye uptake; scouring removes natural waxes before dyeing.
Usual grade: flakes 98–99%
Caustic soda for textile processingFood processing
Lye baths for pretzels, olive curing, cocoa alkalising and clean-in-place cleaning — food-grade material with certificate only.
Usual grade: food-grade pearls or flakes
Caustic soda in food productionChemicals, cosmetics and pharma
A base reagent for neutralisation, hydrolysis and pH control, and feedstock for sodium hypochlorite and many sodium salts.
Usual grade: pearls 99% or liquid
Caustic soda in chemical manufacturingWorking concentrations and dosage depend on each plant’s process and are set by the user’s own technical team.
Caustic Soda Packaging: 25 kg Bags, Jumbo Bags, IBC Tanks and Drums
Packaging is the first protection for caustic soda quality in transit. Every unit carries the lot number and UN Class 8 marking.
| Grade | Packing | Unit | Per container |
|---|---|---|---|
| Flakes or pearls | PP woven bags with PE liner, palletised | 25 kg | ≈ 24–25 MT per 20ft |
| Flakes or pearls | 25 kg bags packed inside jumbo bags | 25 kg bags | Confirmed on the packing list |
| Liquid 48–50% | IBC tanks or PE drums | IBC tank · PE drum | Confirmed on the quotation and packing list |
Order calculator: bags, containers and order value
Enter your tonnage. If you already hold a quotation, add its price per ton to see the price per bag and the order value. Calculated in your browser only.
- 25 kg bags
- 1,000
- 20ft containers
- 1
- Price per 25 kg bag
- —
- Order value
- —add a quoted price
Shelf life and storage
Flakes and pearls keep for two years or more in sealed bags stored dry, cool and off the floor. Liquid keeps well in sealed IBC tanks, drums or storage tanks, but 50% solution starts to crystallise below about 12 °C, so storage in cold climates needs heating. Full guidance: how to store caustic soda safely.
Caustic Soda Export: Ports, Incoterms and Delivery
Two loading origins give each buyer the shorter lane — and a working alternative if one corridor is disrupted.
| Item | Detail |
|---|---|
| Loading ports | Mersin, Türkiye · Jebel Ali, UAE |
| Road delivery | By truck from Türkiye to neighbouring markets |
| Domestic coverage | All 81 provinces of Türkiye · all 7 emirates of the UAE |
| Export coverage | Africa · Americas · Asia · Europe · Oceania |
| Incoterms | FOB · CFR · CIF (Incoterms 2020) |
| Minimum order | One full container load, 20ft or 40ft — bags for solids, IBC tanks or PE drums for liquid |
| Payment | T/T against documents · irrevocable L/C at sight |
| Documents | COA, SDS, invoice, packing list, B/L or CMR, certificate of origin, Dangerous Goods Declaration |
| Inspection | SGS, Bureau Veritas or Cotecna at the loading port on request |
| Destination region | Usually served from | Transit |
|---|---|---|
| East Mediterranean | Mersin | 2–5 days |
| Black Sea / East Europe | Mersin | 3–7 days |
| West Africa | Mersin | 10–18 days |
| Gulf | Jebel Ali | 1–4 days |
| East Africa | Jebel Ali | 7–19 days |
| South Asia | Jebel Ali | 3–14 days |
| Southeast Asia | Jebel Ali | 11–18 days |
Caustic soda supplier in Dubai and the UAE
Our head office is in Dubai. UAE buyers — water and desalination plants, detergent makers, refineries and re-sellers in all seven emirates — order caustic soda flakes, pearls and liquid from one full container load, with Jebel Ali as the loading port for Gulf and onward export orders. Local delivery, documents and lead times are on the caustic soda supplier in the UAE page; Türkiye buyers see caustic soda supplier in Türkiye.
Freight risk, November 2026. Sailings from Jebel Ali to East Africa, the Red Sea and Asia pass the Strait of Hormuz, where commercial traffic has been disrupted this year. These lanes can carry a war-risk surcharge or a longer schedule, which we state on the quotation. Mersin lanes do not pass through Hormuz. Current CIF levels by destination: caustic soda price by country.
Regional supply pages: Africa · Balkans · Serbia · Ukraine · South America.
Caustic Soda Price per Ton: What Drives the Quote
Caustic soda trades in US dollars per metric ton on an Incoterm basis — FOB, CFR or CIF — and there is no fixed list price. The quote you receive depends on grade, packing, volume, loading port and destination, and on the market drivers below.
Current indicative levels are published on the caustic soda price and caustic soda flakes price pages; landed CIF by destination on caustic soda price by country. A firm quotation for your order is sent within 24 hours of a complete enquiry.
| Driver | Effect | Why |
|---|---|---|
| Electricity cost | Higher power → higher price | Electrolysis is one of the most power-hungry industrial processes |
| Chlorine and PVC demand | Strong chlorine demand → softer caustic | Plants run for chlorine; caustic is the co-product that must be sold |
| Alumina and pulp output | More demand → firmer price | The two largest consuming sectors |
| Freight and routing | Higher freight → higher CFR / CIF | Class 8 surcharges and war-risk premiums vary by lane |
| Form | Pearls below flakes on current offers | Liquid costs more per ton of NaOH once freight is added |
| Volume | More containers → lower unit price | Freight consolidation and contract terms |
Wholesale Caustic Soda: Factory, Wholesale and Distributor Prices Explained
Buyers searching for a “factory price” or “wholesale price” for caustic soda are usually comparing three different price levels. Knowing which one a quote is gives you a fair comparison.
| Price level | Who sells | Typical lot | What the price includes |
|---|---|---|---|
| Factory (producer) price | Chlor-alkali plant | Annual contracts, thousands of tonnes | Product ex-plant; buyer arranges export packing, documents and freight |
| Wholesale export price | Export supplier such as SUHA | From one full container load | Packed product, COA, export documents; FOB, CFR or CIF |
| Distributor price | Local stockist | Pallets or single bags | Imported stock, local storage, delivery and margin |
Price per 25 kg bag
Wholesale caustic soda is quoted per metric ton. Divide by 40 for the price of one 25 kg bag, or by 1,000 for the price per kg. The calculator above does this for your quoted price.
Volume and contract terms
Three or more containers, or a contract for regular monthly shipments, are priced below a single container. State your annual tonnage in the enquiry.
For distributors and traders
Distributors, re-packers and traders buy on the same wholesale export terms as plants, with the COA and SDS needed to re-sell in their own market.
Current indicative wholesale levels: caustic soda price per ton · caustic soda flakes price.
Caustic Soda Suppliers, Manufacturers and Distributors: Where to Buy in Bulk
Caustic soda manufacturers, export suppliers and local distributors are three different buying routes. Which one fits depends on your annual tonnage and how much export paperwork you want to handle yourself.
| Route | Works when | Trade-off |
|---|---|---|
| Caustic soda manufacturer (chlor-alkali plant) | You take several thousand tonnes a year on annual contract | Volume commitments, less grade flexibility, plant-direct logistics |
| Export supplier (SUHA) | You import from one container to a few thousand tonnes a year and want grades, dangerous-goods handling and documents managed | A trading margin, in exchange for two origins and paperwork that clears customs first time |
| Local distributor | You need a few pallets quickly with local delivery | Highest unit price: imported stock plus local storage and margin |
| B2B marketplace listing | Price discovery only | Stock and specifications often unverified; deals tend to fail at the COA and dangerous-goods stage |
SUHA International Trading sits in the second row: a caustic soda supplier and exporter, not a manufacturer. That is what lets us promise what we actually control — membrane-grade material, a COA per lot, a complete export document set and supply from a second origin — rather than plant ownership we do not have.
How to vet caustic soda suppliers: six checks before you pay
- Production routeAsk for membrane grade in writing. Mercury-cell and diaphragm material carry higher chloride or mercury risk.
- A real lot COAA certificate of analysis for the lot you will receive, not a generic template with no lot number.
- TDS and SDS before the orderA supplier that publishes its data sheets has nothing to hide on specification.
- A written quotationPrice per ton, Incoterm, loading port, packing, payment terms and validity on one page.
- Inspection on requestSGS, Bureau Veritas or Cotecna at the loading port before the container is sealed.
- Dangerous-goods paperworkUN 1823 or UN 1824 Class 8 declaration and marking; missing papers hold containers at the port.
Why Buy Caustic Soda From SUHA International
Buyers rarely lose sleep over a price list. They lose it over stock-outs, off-spec lots and a document that holds a container at the port.
Membrane grade only
No diaphragm or mercury-cell material, so chloride stays low and the product suits food, pharma and high-purity duties.
COA on every lot
A certificate of analysis for your actual lot — assay, carbonate, chloride, iron — not a generic template.
Two origins, sea and road
Mersin and Jebel Ali by sea, plus trucks from Türkiye. If one corridor is disrupted, supply continues from the other.
Firm quotation in 24 hours
Unit price, container value, terms, port and loading window — a document you can take to budget approval.
Complete export documents
COA, SDS, invoice, packing list, B/L or CMR, certificate of origin and Class 8 dangerous-goods papers, checked before loading.
One supplier, several chemicals
Caustic soda can ship with soda ash, sodium hypochlorite or hydrogen peroxide on one order cycle.
How to Order Bulk Caustic Soda
- Send your enquiryGrade and form, quantity per shipment and per year, packing, destination and Incoterm — by the contact form, WhatsApp or email.
- Receive a firm quotation within 24 hoursUSD per metric ton, container value, payment terms, loading port and the available loading window.
- Confirm the orderSign the proforma invoice and open payment by T/T or L/C at sight. Minimum order is one full container load.
- Quality check and documentsCOA issued for the lot, export documents prepared; third-party inspection at the loading port if you request it.
- ShipmentContainer loaded and sailed (or truck dispatched), with tracking and a B/L or CMR copy shared on departure.
RFQ checklist — what gets a same-day answer
- Grade: flakes 98–99%, pearls 99%, or liquid 48–50%
- Quantity: tonnes per shipment and per year
- Packing: 25 kg bags palletised, 25 kg bags in jumbo bags, or IBC tanks / PE drums for liquid
- Destination: port or delivery address and country
- Incoterm: FOB, CFR or CIF
- Application: so the grade can be checked against your process
- Payment: T/T or L/C at sight
- Special needs: food grade, inspection, document language
Caustic Soda Safety: Hazards, PPE and Exposure Limits
Caustic soda is a strong corrosive shipped as dangerous goods. Every consignment carries a safety data sheet; read it before handling. Hazard data: PubChem and the ECHA substance record.
Hazard
GHS Skin Corr. 1A (H314), H290 for solutions. Keep away from acids, aluminium and zinc, which release hydrogen on contact.
Protection
Splash goggles and face shield, nitrile or neoprene gloves, alkali-resistant apron and boots; eyewash and safety shower within about ten seconds of the work area.
Exposure limits
OSHA PEL 2 mg/m³ (8-hour TWA); NIOSH REL and ACGIH TLV 2 mg/m³ ceiling; NIOSH IDLH 10 mg/m³.
Storing and diluting
Cool, dry, ventilated store with bunded floor, sealed containers and segregation from acids. Always add caustic to water, never water to caustic.
Rules that apply
EU CLP and REACH, the IMDG Code at sea, ADR on European roads, and national rules at destination such as Türkiye’s KKDİK.
On skin or eyes
Flush with running water for at least 30 minutes, removing contaminated clothing, then get medical care. Never try to neutralise a burn.
If swallowed
Do not induce vomiting and do not give vinegar or juice. Call a poison centre or emergency number at once and take the safety data sheet with you.
Caustic Soda Supplier FAQ: Grades, Wholesale, MOQ, Shipping and Price
Contact the Caustic Soda Export Desk
WhatsApp is the fastest channel for urgent or large-volume enquiries.
Caustic soda products
Prices
Supply by region
Guides
References
- PubChem CID 14798 — Sodium hydroxide
- ECHA — sodium hydroxide substance information
- Regulation (EU) 2017/852 on mercury
- Minamata Convention on Mercury
- OSHA Occupational Chemical Database — Sodium hydroxide
Prepared by the SUHA International Trading export desk, Dubai and Ankara. Technical data is taken from our published TDS files; the certificate of analysis issued with your consignment governs.