Flakes 98–99%
NaOH content
Most traded solid form
Chemicals & Petrochemicals
HS 2815
- NaOH 98–99% solids
- 48–50% lye in bulk
- Shipped as dangerous goods (corrosive)
Chemicals & Petrochemicals · Industrial chemicals
Caustic Soda: flakes, pearls and lye
Sodium hydroxide in flakes, pearls or lye for industrial processing. Caustic soda (sodium hydroxide) is a base chemical used across alumina refining, pulp and paper, soaps and detergents, textiles and water treatment.
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Form
Purity
Packing
Your requirementPick options above to build your requirement
Options are common examples, not stock. TP4 confirms availability for each requirement.
Product overview
Caustic soda (sodium hydroxide) is a base chemical used across alumina refining, pulp and paper, soaps and detergents, textiles and water treatment.
It is classified as corrosive for transport. Solid and liquid forms ship very differently.
- HS heading
- 2815
- Category
- Chemicals & Petrochemicals
- Product group
- Industrial chemicals
- Commonly sourced from
- China, India, Saudi Arabia, United States
- Trade types
- Import, Export
- Typical shipping
- Containers (FCL), ISO tank containers
Grades and standards
The grades most often specified in international trade. Name the standard as well as the grade.
Pearls 99%
NaOH content
Free-flowing, easy dosing
Lye 48–50%
Liquid
Large industrial users
Specifications
What buyers usually specify, with common examples. Confirmed values come from the supplier for each requirement.
| Form | Flakes, pearls or lye (liquid, often 48% to 50%) |
|---|---|
| Purity | Solids commonly 98% to 99% NaOH |
| Packaging | Flakes and pearls in 25 kg bags; lye in ISO tanks or bulk |
| Documents | SDS, certificate of analysis |
| Transport | Dangerous goods (corrosive) for sea and air |
| HS heading | 2815 (confirm the full tariff code for your exact product and destination) |
Commonly sourced from
Market information, not confirmed availability.
No verified supplier listings are published for this product yet. Request it and TP4 works on the requirement directly.
Where it is used
- Alumina & metalsBayer process and metal treatment.
- Soaps & detergentsSaponification and cleaning products.
- Water treatment & textilespH control and processing.
Quality checks
- 1NaOH assay
- 2Na₂CO₃ and NaCl
- 3Iron content
- 4Appearance
- 5Packaging integrity
Documents
- SDS
- Certificate of analysis
- Dangerous goods declaration
- Certificate of origin
Packaging and shipping
- 25 kg multi-layer bags
- Jumbo bags
- ISO tanks for lye
Shipping modes for chemicals & petrochemicals
Containers (FCL)ISO tank containersChemical tankersBulk vessel
Delivery terms decide who books the freight. Buying FOB or FCA? TP4 can coordinate the freight on your side. Buying CFR or CIF? The supplier books it and TP4 keeps the documents aligned.
Plan logisticsWhat moves the price
TP4 does not publish prices: they change with the market and depend on your exact requirement. These are the factors behind every quote.
- 01Chlor-alkali market
- 02Form and purity
- 03Packaging
- 04DG freight surcharges
- 05Origin
Before you request caustic soda
Have these ready and the first conversation becomes a quote, not a list of questions.
- Form and purity
- Packaging
- Quantity
- Destination import rules
- Incoterm
Caustic Soda: frequently asked questions
Is caustic soda hazardous to ship?
Yes, it is classified as corrosive. It ships under dangerous-goods rules with proper packaging and labels.
Flakes or pearls?
Both are solid NaOH. Pearls flow more easily; flakes are more widely traded.
What is lye?
A liquid solution, usually 48–50% NaOH, used by large consumers with tank storage.
Which documents are needed?
An SDS, certificate of analysis and dangerous-goods declaration as a minimum.
Request caustic soda.
Share the specification, quantity and destination. TP4 reviews every request.