Skip to content
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
Request a Quote

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

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

Technical information for Caustic Soda Flakes
Chemical nameSodium hydroxide
FormulaNaOH
CAS number1310-73-2
Molecular weight40.00 g/mol
HS code2815.11
Transport classificationUN1823, Class 8, PG II
AppearanceWhite, hygroscopic solid flakes (pearls: white spherical granules)
FormsFlakes · Pearls / micropearls (prills, beads) · Granules / solid
GradesMembrane (IS-IT) flakes ≥99% · Flakes ≥98% · Diaphragm-type (IS-DT) flakes 96% · Pearls / micropearls ≥99% · Food grade (Kosher/Halal available)
Packaging25 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)

Caustic Soda Flakes: Flakes 99% (typical)
ParameterTypical value
NaOH≥ 99.0%
Na2CO3≤ 0.5%
NaCl≤ 0.03%
Fe2O3≤ 0.005%

Flakes 98% (typical)

Caustic Soda Flakes: Flakes 98% (typical)
ParameterTypical value
NaOH≥ 98.0%
Na2CO3≤ 1.0%
NaCl≤ 0.08%
Fe2O3≤ 0.01%

Pearls 99% (typical)

Caustic Soda Flakes: Pearls 99% (typical)
ParameterTypical 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.

Ask about packaging

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.

Include country code, e.g. +66

Frequently asked questions

What grades of Caustic Soda Flakes can LALITAPATTRA supply?

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 our team will confirm what we can supply, with the current specification.

Can I get the TDS, SDS or COA for Caustic Soda Flakes?

Yes. Documentation for Caustic Soda Flakes can be requested through 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.

What packaging options are available for Caustic Soda Flakes?

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 when you request a quotation and we will confirm what is available for your grade and volume.

Can Caustic Soda Flakes be supplied for export?

We support export inquiries for Caustic Soda Flakes. Include your destination country and port in your request so we can prepare a quotation that covers documentation and logistics coordination.

What should I include in a quotation request?

The product name and grade, quantity and unit, preferred packaging, destination country and port, required delivery date and any documents you need. The more detail you share, the more precise the quotation.

  • 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
    View productRequest quote
  • Industrial Chemicals

    Hydrochloric Acid

    Strong mineral acid for steel pickling, pH control, ion-exchange regeneration and descaling.

    Applications

    • Metal surface treatment
    • pH adjustment & neutralization
    View productRequest quote
  • Industrial Chemicals

    Sulfuric Acid

    High-volume mineral acid for fertilizer production, metal processing, chemical synthesis and pH control.

    Applications

    • Chemical manufacturing
    • Fertilizers & soil conditioning
    View productRequest quote
  • Cleaning & Disinfection

    Hydrogen Peroxide

    Versatile oxidizer for bleaching, disinfection and wastewater treatment that decomposes to water and oxygen.

    Applications

    • Bleaching
    • Oxidation
    View productRequest quote