Caustic soda / Sodium hydroxide
* Sodium hydroxide is one of the essential chemicals in a chemical laboratory and is also one of the common industrial chemicals.
The pure product is a colorless transparent crystal.
* Density: 2.130 g/cm³.
* Melting point: 318.4°C.
* Boiling point: 1390°C.
* Industrial products contain small amounts of sodium chloride and sodium carbonate, which are white opaque crystals.
* It comes in various forms such as blocks, flakes, granules, and bars.
* Molecular weight: 40.01
* Sodium hydroxide can be used as an alkaline cleaner in water treatment and dissolves in ethanol and glycerol but does not dissolve in propanol or ether.
* It also has corrosive effects on carbon steel at high temperatures. When exposed to halogens such as chlorine, bromine, iodine, it undergoes disproportionation reactions, and when combined with acids, it neutralizes them to form salts and water.
Specification of caustic soda:
| Item |
Test Standard |
Test Result |
| Form |
Flakes |
Flakes |
| NAOH % ≥ |
98 |
99.5 |
| Na2CO3 % ≤ |
0.5 |
0.01 |
| NACL % ≤ |
0.08 |
0.00005 |
| Fe2O3 % ≤ |
0.2 |
0.0006 |
| |
Application of Caustic soda:
Sodium hydroxide is widely used in the national economy, and many industrial departments need sodium hydroxide. Followed by papermaking, aluminum smelting, tungsten smelting, rayon, rayon and soap manufacturing.
In addition, in the production of dyes, plastics, pharmaceuticals and organic intermediates, the regeneration of old rubber, the electrolysis of sodium metal and water, and the production of inorganic salts, a large amount of caustic soda is also used to prepare borax, chromium salt, manganate and phosphate.
Package of Caustic soda:
Audited Supplier 
){kind=link}