Caustic Soda Lye (32% & 47%) &
Caustic Soda Flakes (99.9%)
Caustic Soda is a versatile basic chemical with a wide range of industrial applications. It is highly soluble is water and is practically insoluble in most organic solvents except alcohols. It is available in the form of lye (solution in water).
Applications
- Digestion of wood and bagasse for manufacture of pulp and paper.
- Digestion of wood for manufacture of viscose staple fibre, viscose filament yarn and rayon tyre cord.
- Manufacture of soaps and detergents.
- Digestion of aluminium ore to make alumina as an intermediate in the production of aluminium.
- Bleaching & processing of cotton textiles.
- Regeneration of ion-exchange resins in water treatment plants.
|
Quality
Rayon Grade Caustic Soda Lye is manufactured in technical
collaboration with UHDE GmbH of Germany, world leaders in chlor-alkali
technology. Caustic Soda Flakes are produced using the latest technology and
plant of Bertrams, Switzerland. Rigid quality control on inputs, process and
outputs lead to high purity and consistent quality that permit
standardization of its use in industry.
Properties
1. |
Specific gravity |
2.13 |
2. |
Odour |
Odourless |
3. |
Melting point
(calcination) |
320°C |
4. |
Boiling point |
1390°C |
5. |
Hygroscopicity |
Hygroscopic and
deliquescent |
6. |
Solubility in
water |
Highly soluble |
7. |
Solubility in
organic solvents |
Solubles in
ethanol, methanol, glycerol etc but insoluble in ether and benzene |
Specifications
Property |
Rayon Grade as per IS:252:1991 |
Caustic Soda |
Lye |
Flakes |
General appearance |
Free from foreign
matter |
Clear, colourless
liquid |
White Flakes |
Sodium Hydroxide concentration
|
- |
47.5 0.2% |
98% |
Purity (on dry basis) |
99.5% min |
99.6% |
99.6% |
Sodium Carbonate content |
0.40% max. |
0.30% |
0.30% - 0.35% |
Chloride content (as NaCl)
|
0.10% max. |
0.03% |
0.03% |
Sulphate content (as Na2SO4)
|
0.10% max. |
Traces |
Traces |
Iron (as Fe) ppm |
20 max. |
10 max |
10-15 |
Copper (as Cu) ppm |
2 max. |
Not detectable
|
Not detectable
|
Manganese (as Mn) ppm |
1 max. |
Not detectable
|
Not detectable
|
Matter insoluble in water % |
1% max. |
Nil |
Nil |
Packaging
caustic Soda (Lye) is supplied in lorry tankers, Caustic
Soda Solid is packaged in MS drums, and Caustic Soda Flakes are marketed in
50 Kg HDPE bags.
Handling and Storage
Caustic Soda is a highly corrosive substance and requires
careful handling. There should be no contact with bare skin. Caustic Soda
flakes should be stored under dry conditions away from acids, organic
chemicals, metals such as aluminium, tin, zinc, lead etc. and their alloys.