Caustic Soda Flakes (Sodium Hydroxide)
Solid sodium hydroxide (NaOH ≥98%), industrial grade sourced from Chemplast Sanmar, Rayalaseema and DCW, delivered within Chennai in 24 hours and across Tamil Nadu and other states in 2 to 3 days.
Overview
Caustic soda flakes are solid sodium hydroxide (NaOH), a strong alkali used to adjust pH, break down fats and organic matter, and process raw materials across water treatment, textile, soap, and paper manufacturing. Velonex Chemicals supplies caustic soda flakes sourced from Chemplast Sanmar, Rayalaseema, and DCW, delivered within Chennai in 24 hours and across Tamil Nadu and other states in 2 to 3 days.
- NaOH ≥98%
- Industrial grade
- White flakes, odourless
- 50 kg bags
- 500 kg MOQ
- UN 1823 · Class 8
Quick facts
The specification at a glance. Exact batch purity is confirmed on the COA that ships with your order.
Identity
- CAS Number
- 1310-73-2
- Formula
- NaOH
- Also known as
- Caustic soda, sodium hydroxide, lye, soda lye
- Physical form
- White flakes, odourless
Grade & purity
- Grades available
- Industrial grade
- Typical purity
- NaOH ≥98%
Hazard
- UN Number / Class
- UN 1823, Class 8 (corrosive)
Packaging & supply
- Packaging
- 50 kg bags
- Minimum order
- 500 kg (10 bags)
- Supply area
- Chennai - 24 hrs. Tamil Nadu & other states - 2 to 3 days.
Grades we supply
We source caustic soda flakes from three manufacturers Chemplast Sanmar (Tamil Nadu), Rayalaseema and DCW all at a minimum NaOH purity of 98%, industrial grade. Which one ships depends on what's running that week, and the batch's exact purity is confirmed on the COA that comes with your order, not promised in advance on this page.
- Chemplast Sanmar
- Rayalaseema
- Grasim
What it's used for
A base alkali across five common processes. Tell us the application and we'll match the grade.
Get a Quote- 1
Water treatment
Adjusts pH and neutralises acidic process water.
- 2
Textile processing
Used in mercerization and dyeing.
- 3
Soap and detergent manufacturing
Drives the saponification reaction that turns fats into soap.
- 4
Paper and pulp
Used in pulping and bleaching stages.
- 5
General chemical manufacturing
A base ingredient in a wide range of downstream processes.
Safety and handling
Corrosive handle with protection
Contact causes severe skin and eye burns, so gloves and eye protection are required when handling.
- Hygroscopic: the flakes absorb moisture from the air, so keep bags sealed and stored dry.
- Always add flakes to water, never water to flakes the reaction is strongly exothermic.
Documentation
Your COA and MSDS come from the manufacturer for the batch you receive, pinned to your invoice.
This page is general handling guidance, not a full safety data sheet request the MSDS with your quote for complete precautions.
- Pack size
- 50 kg bags
- Minimum order
- 500 kg10 bags any quantity above
- Delivery
- 24 hrs in Chennai2–3 days across TN & other states
Frequently asked questions
Not finding what you need? Message us on WhatsApp →
They're the same chemical, sodium hydroxide (NaOH). Flakes are the solid form, lye is the liquid (aqueous) form. Which one you order depends on your dosing setup flakes for manual handling and dry storage, lye for plants with liquid dosing systems already in place.
Yes. It's classified as corrosive (UN 1823, Class 8) and causes severe skin and eye burns on contact. It is not flammable. Standard handling requires gloves, eye protection, and dry storage away from moisture.
Caustic soda flakes ship in 50 kg bags. Our minimum order quantity is 500 kg (10 bags); above that, we supply any quantity your production needs.
In a sealed, moisture-proof container, away from direct sunlight and incompatible materials. It's hygroscopic, so an open or poorly sealed bag will absorb moisture and start caking.
Message Akash directly on WhatsApp with the quantity and grade you need. We reply the same day.
Need caustic soda flakes sourced?
Tell us the grade and quantity we'll confirm pricing and the manufacturer batch the same day.