Kostik Soda ( Payet Kostik )
General Description :
Caustic soda flakes is oblained sodium hydroxide - technical grade.
It is a solid white, hygroscopic , odorless substance.
Caustic soda flakes easily dissolves in water , with heat release. The product is soluble in methyl and ethyl alcohols.
Sodium hydroxide is a strong electrolyte ( Completely ionized both in crystalline and solution states ).
Sodium hydroide is not volatile , but it rises easily in air as aerosols . It is insoluble in ethyl ether.
Technical Quality Conditions :
| Characteristics |
MU |
Values |
Test Methods |
| Appearance |
- |
Flakes |
Visual |
Sodium hydroxide (NaOH), min. |
% |
98 |
STAS 3068 |
| Sodium carbonate (Na2CO3), max. |
% |
0.07 |
STAS 3068 |
| Sodium chloride (NaCI), max |
% |
0.15 |
STAS 3068 |
| Iron oxides ( Fe2O3) , max. |
% |
0.004 |
STAS 3068 |
Specific Proerties :
pH : Strong alkaline
Bolling point : 1390 °
fgnition temperature : not ignitable
Relative density (water =1) : 2.13 at 25 ° C
Melting point : 318° C
Main Applications :
- oil industry
- petrochemical industry
- aluminum industry
- pulp and paper industry
- soap and detergents industrychemal industry ( for the manufacturing if dyetuff , phenol , phosphates, sodium hypochlorite, polycarbonates , zeolites etc. )
- food industry
- pharmaceutical industry
- water treatment (softtening , demineralization)
- textile industry at the manufacturing of cellulose fibers by viscove process