- Caustic soda flakes is a hard but brittle white solid.
- On exposure to air it readily absorbs water and carbon dioxide.
- It is produced by electrolysis of Brine (NaCl) solution.
Shelf Life: Long life if protected from air and moisture.
Chemical Name | Sodium Hydroxide |
Chemical Formula | NaOH |
Molecular Weight | 40.00 |
CAS No. | 1310-73-2 |
Average Chemical Analysis
Parameters | Average Chemical Analysis |
Physical appearance | White deliquescent flakes. |
Concentration (NaOH) | 98.0 ± 1 % |
Sodium Carbonate (Na2CO3) | 1.0 % max. |
Sodium chloride (NaCl) | 0.04 % max. |
Iron (Fe) | 20 ppm |
- It is the main raw materials for the production of soap.
- In oil refining industry it is used to remove the acids in the oil and improve the smell and color of the oil & petroleum products.
- In textile industry, caustic soda is used to make rayon and mercerization of cotton.
- In paper making industry, it is used as a reagent to treat wood, rice stalks and other fibers.
- Industrial water treatment: Regeneration of ion exchangers, waste water treatment.
- Food industry: Purification of fats and oils and removal of fatty impurities.
- Caustic soda is used for the extraction and purification of aluminum.
It is supplied in the packing of 25 kg Polypropylene bags having polyethylene liner.
- Store in a dry place away from acids, metals like aluminum, magnesium and zinc that cause formation of flammable hydrogen.
- Immediately remove all contaminated clothing and equipment effected by the Caustic.
- Flush the exposed area thoroughly with a lot of water, followed by washing with a solution of 5 % ammonium chloride in water.
- If caustic contacts the eyes, they should be irrigated immediately with plenty of water for at least 15 minutes.
- Hold the eyelids opened during irrigation. The eyes should then be washed with a dilute boric acid solution and wash the eye with water for an additional 15 minutes.
- A physician should be seen immediately after the eye is thoroughly washed.
- For personal protection, use face shields, gloves, gum-boots and protective suites.