Sodium hydroxide liquid (Caustic soda) technical grade mark RDGOST R 55064-2012
Specifications
|
indicator |
Norma indicators | |
|---|---|---|
|
|
Class I |
Class II |
|
Outward appearance |
Colourless or colored liquid . Allowed to crystallize. sediment. |
Colourless or colored liquid . Allowed to crystallize. sediment. |
|
Mass fraction of sodium hydroxide , %, not less |
46 |
44 |
|
Mass for sodium carbonate,% , no more |
0,6 |
0,8 |
|
Mass fraction of sodium chloride , %, not more |
3,0 |
3,8 |
|
Mass for iron in terms of Fe2O3,%, no more than |
0,007 |
0,02 |
|
Mass fraction of sodium chlorate , %, not more |
0,25 |
0,3 |