Potassium dichromate 99.9% AR
Potassium bichromate
Product Code. |
02095 |
Grade |
AR |
Purity |
99.9% |
CAS No. |
7778-50-9 |
Molecular Formula |
K2Cr2O7 |
Molecular Weight |
294.18 |
H.S.Code |
2841.50900 |
Shelf Life |
60 Months |
Physical Properties
| Physical state at 20 °C |
Solid |
Colour |
Orange Crystalline |
Odour |
Odorless |
| pH value |
4.04 (1% aq. solution) |
Melting point/ Freezing point [°C] |
398 °C |
Boiling point [°C] |
500°C |
| Density [g/cm3] |
2.676 |
Solubility in water [% weight] |
6.5% at 20 °C |
Partition coefficient Log Pow octanol / water at 20°C |
5 |
Packaging
Specification
| Appearance | Orange crystalline powder |
| Assay (iodometric) | Min 99.9% |
| Insoluble matter | Max 0.005% |
| Chloride (Cl) | Max 0.001% |
| Sulphate (SO4) | Max 0.005% |
| Lead (Pb) | Max 0.005% |
| Calcium (Ca) | Max 0.002% |
| Iron (Fe) | Max 0.002% |
| Copper (Cu) | Max 0.001% |
| Sodium (Na) | Max 0.02% |
| Loss on drying (at 105°C) | Max 0.05% |
Safety Information and Hazard Symbols
Symbol: GHS03, GHS05, GHS06, GHS08, GHS09
Signal Word: Danger
UN No.: 3087
IMCO Class No.: 5.1, 6.1
Packing Group: II
Hazardous Statement: H317-H330-H314-H410-H334-H340-H350-H312-H372-H360FD-H301-H272-H335
Precaution Statement: P301 + P310-P280-P302 + P350-P305 + P351 + P338-P304 + P341- P221-P273