Caustic Soda Flakes (98%)
White flakes, free from foreign matter, dirt or visible impurities · CAS 1310-73-2
DocumentsSpec sheet (PDF, 33 KB)Safety Data Sheet (PDF, 82 KB)
Overview
Caustic Soda Flakes — sodium hydroxide, also called lye or caustic soda solid (CAS 1310-73-2) — is one of the most versatile industrial alkalis we supply, and our 98% grade arrives as white flakes free from foreign matter, dirt or visible impurities. Beyond pH correction and neutralization in water and wastewater treatment, it's a workhorse feedstock across soap and detergent manufacturing, textile processing, the pulp and paper Kraft process, viscose fibre and zeolite production, aluminium refining, and the manufacture of dyes, sulphites and phosphites. We supply it in 25/50 kg HDPE-lined bags, with bulk quantities available for larger manufacturing requirements.
Specification Sheet — Characteristics
Download Specification Sheet (PDF)| Characteristics | Specifications |
|---|---|
| Sodium Hydroxide as NaOH | Min 97.0–99.50% |
| Sodium Carbonate as Na₂CO₃ | Max 0.40% |
| Chloride as Cl | Max 0.10% |
| Sulphate as SO₄ | Max 0.10% |
| Iron as Fe | Max 20 ppm |
| Matter Insoluble in Water | Max 0.05% |
These values come from our own lab test on Caustic Soda Flakes. They vary slightly from batch to batch, so ask for a current certificate of analysis with your order.
Applications
- pH correction and neutralization in water/wastewater treatment
- Soap, detergent and textile manufacturing
- Pulp and paper (Kraft process)
- Viscose fibre and zeolite manufacturing
- Food additive manufacturing
- Organic chemicals (dyes) and inorganic chemicals (sulphites, phosphites) manufacturing
- Aluminium refining
- Chemical manufacturing feedstock
Safety & Handling Summary
| Topic | Summary |
|---|---|
| Signal word | Danger |
| GHS hazards | H314 — Causes severe skin burns and eye damage H290 — May be corrosive to metals |
| Incompatible with | Water, acids, halogenated compounds, and prolonged contact with aluminium, brass, bronze, copper, lead, tin, zinc or other alkali-sensitive metals/alloys, |
| Gloves | Suitable gloves: butyl rubber, natural rubber, neoprene or nitrile. Discard contaminated leather goods |
| Eye / face | Chemical-resistant safety goggles; splash-resistant goggles with face shield for wet mixing. Provide an emergency eyewash fountain and quick drench |
| Respiratory | A NIOSH-approved respirator with N95 (dust, fume, mist) filters may be used where concentrations are expected to exceed exposure limits. A half-face piece airpurifying respirator may be used up to 10X the exposure limit; full … |
| Body | Protective clothing to minimize skin contact – Tychem® SL or similar chemical-protective suit for wet material; disposable overalls (Tyvek®) for dry material |
| Transport (road) | UN1823 · Class 8 · Packing group II |
| Emergency handling | First aid, fire-fighting and spill / release measures are in Sections 4–6 of the SDS. Emergency contact: +91 70927 22822 / +91 98402 84032. |
A summary of the Caustic Soda Flakes Safety Data Sheet. The full SDS is the authority: download it at the top of this page and read it before first use. Hazard ratings can change with grade and concentration, so confirm the transport class for each consignment.
Frequently Asked Questions
What is Caustic Soda Flakes (98%)?
Caustic Soda Flakes (98%) is supplied by Suraj Chemicals as white flakes, free from foreign matter, dirt or visible impurities, identified by CAS number 1310-73-2. It falls under our Lime & Alkalis range — see the Specification Sheet table above for its full characteristics.
What is Caustic Soda Flakes (98%) used for?
Typical applications include: pH correction and neutralization in water/wastewater treatment; Soap, detergent and textile manufacturing; Pulp and paper (Kraft process); Viscose fibre and zeolite manufacturing.
How should Caustic Soda Flakes (98%) be stored and handled?
Store sealed in a dry, moisture-free area — highly hygroscopic and corrosive. Keep away from acids and reactive metals.
What packaging and pack sizes does Suraj Chemicals supply Caustic Soda Flakes (98%) in?
25/50 kg HDPE-lined bags; bulk supply on request. Contact us if you need a different pack size, or a bulk/tanker quantity.
What is the shelf life of Caustic Soda Flakes (98%)?
Typically around 12 months from date of manufacture in original, unopened packaging, stored in a cool, dry place away from moisture. Extended exposure to humid air can affect this product's quality, so keep containers tightly resealed between uses and avoid part-used bags sitting open. As with any industrial chemical, request the current batch's manufacturing date and a fresh certificate of analysis for orders where exact remaining shelf life matters.
Is Caustic Soda Flakes (98%) hazardous to handle?
Yes. Caustic Soda Flakes (98%) is classified under GHS (signal word: Danger) as: causes severe skin burns and eye damage (H314); may be corrosive to metals (H290). Follow the storage and handling guidance above, use appropriate PPE, and download the Safety Data Sheet (SDS/MSDS) in the sidebar above for full GHS hazard, handling and PPE details.
Is a Specification Sheet, TDS or MSDS available for Caustic Soda Flakes (98%)?
Yes. a downloadable Specification Sheet (PDF) with full characteristics and specifications is available above, and a downloadable Safety Data Sheet (SDS/MSDS) for Caustic Soda Flakes (98%) is also available above.
Can I get a sample or discuss order quantity for Caustic Soda Flakes (98%)?
Yes. use the Request Price & Availability button or WhatsApp us with your required quantity, and our team will confirm pricing, minimum order quantity, sample availability and delivery timelines for Caustic Soda Flakes (98%).
Actual packaging as supplied by Suraj Chemicals
CAS Number
1310-73-2
Also Known As
Sodium Hydroxide, Lye, Sodium Hydrate, Caustic Soda Solid
Chemical Formula
NaOH
Appearance
White flakes, free from foreign matter, dirt or visible impurities
Packaging
25/50 kg HDPE-lined bags; bulk supply on request
Storage & Handling
Store sealed in a dry, moisture-free area — highly hygroscopic and corrosive. Keep away from acids and reactive metals.
Shelf Life
Typically around 12 months from date of manufacture in original, unopened packaging, stored in a cool, dry place away from moisture. Extended exposure to humid air can affect this product's quality, so keep containers tightly resealed between uses and avoid part-used bags sitting open. As with any industrial chemical, request the current batch's manufacturing date and a fresh certificate of analysis for orders where exact remaining shelf life matters.