
Technical Data Sheet · Version 1.0 · Issued 02 July 2026
Technical Data Sheet
Caustic Soda
Product Description
Chemical Composition
| Component | CAS Number | % w/w |
|---|---|---|
| Sodium Hydroxide | 1310-73-2 | 99% |
| Moisture and impurities | N/A | 1% max |
Physical & Chemical Properties
| ph | 14 (1% aqueous solution) |
| odour | Odorless |
| colour | White |
| viscosity | Not applicable (solid) |
| appearance | White solid flakes |
| solubility | Highly soluble in water |
| flash point | Not applicable (non-flammable solid) |
| boiling point | 318 °C (decomposes) |
| specific gravity | 2.13 g/cm³ (solid) |
Performance Data & Dosage
| contact time | Consult application guidelines |
| compatibility | Water, Alkalis, Most metals (corrosive over time, use appropriate materials) |
| dilution ratio | Consult product label or process guidelines |
| incompatibility | Acids, Organic halides, Aluminum, zinc, tin, Strong oxidizers, Moisture sensitive, reacts with water exothermically |
| recommended dosage | Consult application requirements per industry standards |
| treatment temperature | Consult process specific conditions |
Applications & Industries
Applications
- Water treatment
- Detergent manufacturing
- Pulp and paper processing
- Chemical synthesis
- Textile processing
- Mining
- Soap making
Industries Served
Health & Safety (GHS)
Signal Word: Danger
Hazard Class: Skin corrosion/irritation – Category 1A; Serious eye damage/eye irritation – Category 1
Hazard Statements:
- Causes severe skin burns and eye damage.
- Corrosive to metals.
PPE Required:
first aid skin
Immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing. Seek medical attention.
first aid eyes
Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do – continue rinsing. Immediately seek medical attention.
first aid ingestion
Do NOT induce vomiting. Rinse mouth thoroughly and seek immediate medical attention.
Storage & Handling
| disposal | Dispose of in accordance with local regulations. Neutralize before disposal if applicable. |
| shelf life | Consult product label |
| container material | Use corrosion-resistant containers such as polyethylene or coated steel drums. |
| storage conditions | Store in a cool, dry, well-ventilated area away from moisture and incompatible materials such as acids and metals. |
| storage temperature | Store below 30°C |
Packaging & Transport
| un number | 1823 |
| packing group | II |
| transport class | 8 (Corrosive substances) |
Standards & Compliance
| Standard | Scope |
|---|---|
| KEBS KS EAS 1057:2017 | Sodium Hydroxide Flakes - Specification and Quality Requirements |
| ISO 9001:2015 | Quality management systems - Requirements (supplier quality management) |
Frequently Asked Questions
What is the typical purity of your caustic soda flakes?
Our caustic soda flakes have a purity of 99%, suitable for industrial use.
Do you offer bulk discounts for large orders?
Yes, tiered pricing applies for orders over 500kg. Contact sales for quotes.
What packaging sizes are available?
We supply caustic soda flakes in 25kg bags and 50kg drums.
How should caustic soda flakes be stored?
Store in a cool, dry place away from moisture and incompatible materials.
Is delivery available to all East African countries?
Yes, Zenco Systems Ltd delivers across Kenya, Uganda, Tanzania, Rwanda and the East African region.
Want a downloadable copy of this datasheet?
Contact our technical team and we will send you the full official PDF directly to your inbox.
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