Caustic Soda Flakes | Sodium Hydroxide Flakes – 1kg | 99% Pure for Soap Making & Cleaning
Product Details
| Product Name | Caustic Soda Flakes | Sodium Hydroxide Flakes |
| Chemical Name | Sodium Hydroxide (NaOH) |
| Net Weight | 1 kg |
| Purity | 99% Minimum |
| Form | White Flakes |
| CAS Number | 1310-73-2 |
| HS Code | 2815.1110 |
| Uses | Soap Making, Drain Cleaning, pH Adjustment, Industrial |
About this item
- 99% Pure Sodium Hydroxide: High‑quality caustic soda flakes with 99% minimum purity for reliable results.
- Free‑Flowing Flakes: Easy to measure and dissolve in water – ideal for precise applications.
- Versatile Applications: Perfect for soap making (cold process), drain cleaning, pH adjustment, and industrial use.
- Membrane Cell Technology: Manufactured using advanced membrane cell technology for superior purity and consistency.
- Low Iron & Low Carbonate: High‑grade product with minimal impurities for sensitive applications.
- Fresh Stock: Packed in durable, tamper‑proof bags to maintain quality.
⚠️ WARNING: Causes severe burns. Read safety data sheet before use. Wear protective equipment.
Perfect for: Soap Making | Drain Cleaning | pH Adjustment | Industrial Use | Laboratory Applications
Table of Contents
Caustic Soda Flakes | Sodium Hydroxide Flakes – 1kg is a high‑purity, 99% pure sodium hydroxide (NaOH) in free‑flowing flake form. This versatile chemical is essential for cold‑process soap making, drain cleaning, pH adjustment, and various industrial applications. Manufactured using advanced membrane cell technology, our caustic soda flakes deliver consistent quality with minimal impurities – low iron and low carbonate content for reliable results .
What is Caustic Soda Flakes | Sodium Hydroxide Flakes?
Caustic Soda Flakes | Sodium Hydroxide Flakes is a white, odorless, highly alkaline solid that dissolves readily in water, generating significant heat (exothermic reaction). It is one of the most widely used industrial chemicals globally, with applications ranging from soap and detergent manufacturing to water treatment and biodiesel production .
This 1kg pack is ideal for small‑scale users: cold‑process soap makers, DIY drain cleaning, and laboratory applications. The flakes are free‑flowing, easy to measure, and dissolve quickly in water – perfect for precise formulation .
Key Features and Specifications
- 99% Minimum Purity: High‑grade sodium hydroxide with minimal impurities .
- White Flakes: Free‑flowing, odourless, and easy to handle .
- Low Carbonate & Low Iron: Advanced membrane cell technology ensures high quality .
- High Solubility: Dissolves easily in water – 111 g per 100 g of water .
- Melting Point: 318°C; Boiling Point: 1390°C .
- pH Level: 14 (strongly alkaline) .
- CAS Number: 1310-73-2 .
- HS Code: 2815.1110 .
Common Applications of Caustic Soda Flakes | Sodium Hydroxide Flakes
Caustic Soda Flakes | Sodium Hydroxide Flakes – 1kg is a versatile chemical used in many applications :
- Soap Making (Cold Process): Reacts with fats and oils to produce bar soap and glycerin. The essential ingredient for saponification.
- Drain & Pipe Cleaning: Dissolves grease, hair, and organic blockages when mixed with water.
- pH Adjustment: Raises pH of acidic water or industrial effluents.
- Laboratory Reagent: Used in titrations, chemical synthesis, and analytical chemistry.
- Cleaning Agent: Effective for removing grease and organic residues from equipment.
- Biodiesel Production: Acts as a catalyst in transesterification of vegetable oils.
How to Use Caustic Soda Flakes | Sodium Hydroxide Flakes for Soap Making
⚠️ Important: This is a hazardous chemical. Follow all safety precautions exactly.
- Calculate the lye amount: Use an online soap calculator to determine the exact weight of caustic soda flakes | sodium hydroxide flakes needed for your oils.
- Prepare the lye solution: Weigh the required flakes. Measure distilled water (typically 1 part NaOH to 2‑2.5 parts water). Always add flakes to water, never water to flakes to prevent violent eruption .
- Stir gently: The solution will heat up to near boiling (80‑90°C). Allow to cool to 35‑45°C before mixing with oils.
- Mix with oils: Combine the lye solution with melted oils/fats. Blend with a stick blender until trace (emulsified).
- Pour into mold: Add fragrances, colors, exfoliants as desired. Pour into soap mold.
- Cure: Insulate for 24‑48 hours, then cut and cure for 4‑6 weeks.
Safety gear required: Chemical‑resistant gloves, safety goggles, long sleeves, and a well‑ventilated area. Keep vinegar nearby to neutralize spills .
Critical Safety Information
⚠️ DANGER – Causes severe burns and eye damage.
GHS Hazard Statements: H314 – Causes severe skin burns and eye damage. H318 – Causes serious eye damage .
- Prevention: P260 – Do not breathe dust/mist. P280 – Wear protective gloves, clothing, eye, and face protection .
- Response: P301+P330+P331 – If swallowed, rinse mouth. Do NOT induce vomiting. P305+P351+P338 – If in eyes, rinse cautiously with water for several minutes. P310 – Call poison center/doctor immediately .
- Storage: P405 – Store locked up .
- Disposal: P501 – Dispose of contents/container in accordance with local regulations .
- Always add caustic soda to water – never the reverse – to avoid violent splashing.
- UN Number (hazardous transport): UN 1823 (dry, solid) .
First aid: In case of skin contact – immediately flush with plenty of water for at least 15 minutes. Remove contaminated clothing. In case of eye contact – rinse cautiously with water for at least 20 minutes. Seek immediate medical help .
Comparison: Caustic Soda Flakes vs. Liquid Lye
| Feature | Liquid Lye | Caustic Soda Flakes | Sodium Hydroxide Flakes – 1kg |
|---|---|---|
| Form | Liquid solution | Solid flakes – easy to store, long shelf life |
| Purity | 48‑50% active | 99% minimum – pure NaOH |
| Shipping | Heavy, limited range | Lightweight – easy to ship worldwide |
| Shelf Life | Limited (absorbs CO₂) | 24‑60 months when stored properly |
Frequently Asked Questions about Caustic Soda Flakes | Sodium Hydroxide Flakes – 1kg
Can I use caustic soda flakes | sodium hydroxide flakes for soap making?
Yes. Our caustic soda flakes | sodium hydroxide flakes – 1kg is ideal for cold‑process soap making. Use a soap calculator to determine the exact amount needed for your oils.
Is this food grade?
No. This is industrial grade 99% purity. For food processing applications, please purchase food grade sodium hydroxide. Our product is not certified for direct food contact.
Can I use this for drain cleaning?
Yes. Sprinkle 100‑200g of flakes into the drain, then slowly pour 1‑2 cups of warm water. Wait 15‑30 minutes, then flush with hot water. The reaction dissolves grease and hair. Never use in toilets or with aluminum pipes.
How should I store the flakes after opening?
Store in a tightly sealed HDPE plastic container (not glass for long term). Keep in a cool, dry place away from humidity, acids, and children. Opened product remains effective for 12‑18 months if kept dry.
Where can I buy caustic soda flakes | sodium hydroxide flakes – 1kg?
You can purchase directly from our website. We offer fast shipping, bulk discounts, and a satisfaction guarantee.
Storage & Disposal Guidelines
Storage: Keep in original container with child‑resistant closure. Store away from incompatible materials: acids, organic peroxides, metals (aluminum, zinc, tin), and moisture. Ideal storage temperature: 10‑25°C (50‑77°F). Shelf life: 24‑60 months in unopened packaging .
Disposal: Do not pour down drains or into waterways unless neutralized. To neutralize: slowly add caustic soda to a large volume of water, then add dilute hydrochloric acid or vinegar until pH reaches 6‑8. Confirm neutralization with pH paper. Dispose of neutralized solution according to local regulations. For small quantities, contact your local hazardous waste facility.
For more chemical safety resources, read our complete chemical handling guide.
