A6712312
Potassium dichromate , 99.99%metalsbasis , 7778-50-9
Synonym(s):
Potassium bichromate;Potassium bichromate, Potassium pyrochromate;Potassium dichromate
CAS NO.：7778-50-9
Empirical Formula: Cr2K2O7
Molecular Weight: 294.185
MDL number: MFCD00010944
EINECS: 231-906-6
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | 398 °C (lit.) |
| Boiling point: | 82 °C |
| Density | 7.14 g/mL at 25 °C(lit.) |
| Flash point: | 50 °F |
| storage temp. | Store at RT. |
| solubility | H2O: 0.1 M at 20 °C, clear, orange |
| form | powder |
| color | Orange-red |
| Specific Gravity | 2.676 |
| PH | 3.5-5.0 (25℃, 0.1M in H2O) |
| Water Solubility | 125 g/L (20 ºC) |
| Merck | 14,7627 |
| Exposure limits | ACGIH: TWA 0.0002 mg/m3; STEL 0.0005 mg/m3 (Skin) OSHA: Ceiling 0.1 mg/m3 NIOSH: IDLH 15 mg/m3; TWA 0.0002 mg/m3 |
| InChIKey | KMUONIBRACKNSN-UHFFFAOYSA-N |
| CAS DataBase Reference | 7778-50-9(CAS DataBase Reference) |
| EPA Substance Registry System | Potassium dichromate (7778-50-9) |
Description and Uses
Used (1) in matches, (2) in leather tanning and in the textile industry, (3) as a source of chromate, (4) in pyrotechnics, (5) in colored glass, (6) as an important laboratory reagent, (7) in blueprint developing, and (8) in wood preservation formulations.
Safety
| Symbol(GHS) |      GHS03,GHS05,GHS06,GHS08,GHS09 |
| Signal word | Danger |
| Hazard statements | H272-H301-H312-H314-H317-H330-H334-H335-H340-H350-H360FD-H372-H410 |
| Precautionary statements | P210-P260-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338 |
| Hazard Codes | T,N,T+,O |
| Risk Statements | 45-46-60-61-8-21-25-26-34-42/43-48/23-50/53-52/53-20-48/20-23-51/53-22-36/37/38-27-20/21-23/24 |
| Safety Statements | 53-45-60-61-36/37-23-26 |
| RIDADR | UN 3086 6.1/PG 1 |
| WGK Germany | 3 |
| RTECS | HX7680000 |
| TSCA | Yes |
| HazardClass | 5.1 |
| PackingGroup | III |
| HS Code | 28415000 |
| Hazardous Substances Data | 7778-50-9(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: 90.5 mg/kg LD50 dermal Rat 1170 mg/kg |
