SODIUM DICHROMATE ANHYDROUS CRISTALLINE
GOST 2651-78
Appearance:
Noncaking crystalls of light orange to darkred colour.
Empirical formular:
Na2Cr2O7.
- Used in:
- Tannery and fur industry for leather and fur tanning;
- Chemical industry for producing non-organic pigments, catalyzers and other chrome-containing elements;
- Textile industry for fabric pickling;
- Other industries in passive mixtures content, in antifreeze liquid for engines, acetylene cleaning and chemical reagents.
| Specification: | High grade | First grade |
| Main substance (Na2Cr2O3), min | 98,9% | 98,2% |
| Main substance in coversion to CrO3, min | 75.5% | 75.0% |
| Sulphates in conversion to SO4, max | 0,1% | 0,2% |
| Chlorides in conversion to Cl, max | 0,2% | 0,4% |
| Water insoluble residue, max | 0,01% | 0,02% |
| Main substance (Fe), max | 0,001% | 0,003% |
| pH of water, min | 3,5 | 3,5 |
- Packing:
- UN-approved black metal drums of 75 kg net;
- UN-approved polypropylene bags of 25 kg net with polyethylene insert;
- UN-approved soft containers of Big-Bags type of 1000kg net with polyethylene insert;
- UN-approved containers of Big-Bags type of 1000kg net polyethylene inside lined;
- UN-approved containers of Big-Bags type of 1000kg net with bottom valve.