Potassium Dichromate
Molecular Formula: K2Cr2O7
Molecular weight: 294.19
Character:
This product is orange prism crystal, having three kinds of change-bodies. It is stable in change-body a with nor mal atmospheric temperature, transforming into change-bodyc, when heated to temperature 255℃，be coming onto change-body c again; At the same time volume being decreased into 0.1% Non-deliquescence and no clissolving into alcohol, clissolving into water. These products have toxicity, strong oxidizability, connecting with organic substance and causing infiammation.
Usage:
It is use for making Dichromium Trioxide, chromic postassium sulphate, also being industry raw material for match explosiving printing ink, welding rod ename etc.
Standard:
| Items Index |
High-class |
First-fate |
Qualified |
|
Potassium Dichromate（K2Cr2O7 ） % ≥ |
99.7 |
99.5 |
99.0 |
|
Chlonide ( Cl ) % ≤ |
0.05 |
0.05 |
0.08 |
|
Water insoluble matter % ≤ |
0.02 |
0.02 |
0.05 |
|
Sulphate (SO4) %≤ |
0.02 |
0.05 |
—— |
|
Moisture content % ≤ |
0.03 |
0.05 |
—— |
Packing & Caution:
Inside lead drum lining plastic bag or soft-package. No Connecting with organic substance through carriage. It is easy to cause combustion. Note clamproof, strong oxidizability. This product has tixicith.