Sodium dichromate anhydrous cristalline
GOST 2651-78
Appearance:
Noncaking crystalls of light orange to dark red colour.
Empirical formula:
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 (Na2Cr2O7), 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 polypropylene bags of 25 kg net each; stacked on wooden pallets, shrink wrapped;
- UN-approved blue thin-walled steel drums of 60 kg net each, stacked on wooden pallets, shrink wrapped;
- UN-approved tetraslinging banded soft containers of Big-Bag type of 1000 kg net each;
- UN-approved tetraslinging banded soft containers of Big-Bag type with bottom flap of 1000 kg net each;
- UN-approved polypropylene soft containers of Big-Bag type of 1000 kg net each