Industrial Chemicals
Soda Ash
Sodium carbonate
Alkaline raw material for glass, detergents, chemical production and pH control in water treatment.
Applications
- Glass & ceramics
- Detergents & cleaning products
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Industrial Chemicals
Caustic Soda Flakes
NaOH
Strong alkali in flake form for chemical processing, pH control, textiles, soaps and cleaning.
- Chemical name
- Sodium hydroxide
- CAS number
- 1310-73-2
- Also known as
- Sodium hydroxide, Caustic soda, Lye
Product overview
Caustic soda flakes are solid sodium hydroxide, a strong alkali with a very broad range of industrial uses. The flake form is convenient for storage, handling and dissolving on site.
It is used in chemical manufacturing, soap and detergent production, pulp and paper, textile mercerizing and scouring, and alumina processing. In water treatment it neutralizes acidity and adjusts pH. It is highly corrosive and must be handled with appropriate protection.
Applications
- Chemical manufacturing
- pH adjustment & neutralization
- Detergents & cleaning products
- Textile processing
- Pulp & paper
Typical uses for this chemical. Suitability for a specific process, and grade requirements for food, pharmaceutical or potable-water use, should be confirmed with our team.
Technical information
| Chemical name | Sodium hydroxide |
|---|---|
| Formula | NaOH |
| CAS number | 1310-73-2 |
| Molecular weight | 40.00 g/mol |
| HS code | 2815.11 |
| Transport classification | UN1823, Class 8, PG II |
| Appearance | White, hygroscopic solid flakes (pearls: white spherical granules) |
| Forms | Flakes · Pearls / micropearls (prills, beads) · Granules / solid |
| Grades | Membrane (IS-IT) flakes ≥99% · Flakes ≥98% · Diaphragm-type (IS-DT) flakes 96% · Pearls / micropearls ≥99% · Food grade (Kosher/Halal available) |
| Packaging | 25 kg PP woven bags with PE liner (or PE/LLDPE bags) · 1,000–1,250 kg jumbo bags with PE liner · Palletized 1 t (40 × 25 kg), shrink-wrapped |
Identifiers and classifications are standard reference data for the substance. Forms, grades and packaging reflect what is commonly traded internationally; availability for your order is confirmed in the quotation.
Typical specifications
Typical values for commonly traded grades of Caustic Soda Flakes, based on international standards and published manufacturer data.
Flakes 99% (typical)
| Parameter | Typical value |
|---|---|
| NaOH | ≥ 99.0% |
| Na2CO3 | ≤ 0.5% |
| NaCl | ≤ 0.03% |
| Fe2O3 | ≤ 0.005% |
Flakes 98% (typical)
| Parameter | Typical value |
|---|---|
| NaOH | ≥ 98.0% |
| Na2CO3 | ≤ 1.0% |
| NaCl | ≤ 0.08% |
| Fe2O3 | ≤ 0.01% |
Pearls 99% (typical)
| Parameter | Typical value |
|---|---|
| NaOH | ≥ 99.0% |
| Na2CO3 | ≤ 0.5% |
| NaCl | ≤ 0.024% |
| Fe2O3 | ≤ 0.001% |
| Na2SO4 | ≤ 0.03% |
Reference standards:GB 209-2006 / GB/T 209 (China)ANSI/AWWA B501EN 896 (drinking-water treatment)IS 252ASTM E291 (test methods)Food Chemicals Codex (FCC)
Membrane-process flakes have much lower salt (NaCl) than diaphragm-process 96% grades. Highly corrosive and hygroscopic — keep bags sealed.
Typical values are for guidance. The specification for your order depends on grade and origin and is confirmed in the quotation, Technical Data Sheet and Certificate of Analysis.
Packaging
- 25 kg PP woven bags with PE liner (or PE/LLDPE bags)
- 1,000–1,250 kg jumbo bags with PE liner
- Palletized 1 t (40 × 25 kg), shrink-wrapped
Packaging commonly used for export shipments of this product. Availability depends on grade and origin and is confirmed per order.
Packaging confirmed per order
Tell us your preferred packaging and handling requirements — we'll confirm available options for your grade, volume and destination.
Industries
Documentation
Request the documents you need to evaluate Caustic Soda Flakes. We send documents that match the grade being quoted.
- TDS
Technical Data Sheets
Product specifications and technical information.
- SDS
Safety Data Sheets
Safety and handling documentation where available.
- COA
Certificate of Analysis
Batch-specific documentation where applicable.
Request a Quote
Get a quotation for Caustic Soda Flakes
Share your quantity and destination — our export team will confirm grade, packaging and pricing.
Frequently asked questions
What grades of Caustic Soda Flakes are available?
Caustic Soda Flakes is commonly traded as Membrane (IS-IT) flakes ≥99%; Flakes ≥98%; Diaphragm-type (IS-DT) flakes 96%; Pearls / micropearls ≥99%; Food grade (Kosher/Halal available). Availability varies by origin and destination market — share the grade, purity or standard you require and we will confirm what can be supplied, with the current specification.
What is the HS code for Caustic Soda Flakes?
Caustic Soda Flakes is usually classified under HS 2815.11. National tariff codes add further digits and can differ by form and country, so confirm the full code with your customs broker before shipment.
Is Caustic Soda Flakes a dangerous good for shipping?
Typical transport classification: UN1823, Class 8, PG II. Classification can vary with concentration and form, so the Safety Data Sheet for the grade shipped is the reference used when booking freight.
Which standards apply to Caustic Soda Flakes?
Commonly referenced standards include GB 209-2006 / GB/T 209, ANSI/AWWA B501, EN 896, IS 252. Tell us which standard your application or market requires and we will confirm a grade that meets it.
How is Caustic Soda Flakes packed for export?
Common export packaging for Caustic Soda Flakes includes 25 kg PP woven bags with PE liner (or PE/LLDPE bags); 1,000–1,250 kg jumbo bags with PE liner; Palletized 1 t (40 × 25 kg), shrink-wrapped. Tell us your preferred packaging and we will confirm what is available for your grade and volume.
Can I get the TDS, SDS or COA for Caustic Soda Flakes?
Yes — request them on this page. We send the documents that apply to the specific grade you are evaluating; a Certificate of Analysis is batch-specific and issued where applicable.
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