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A6712412

Potassium dichromate , ACS,≥99.0% , 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

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
Toxicity LD50 orally in Rabbit: 90.5 mg/kg LD50 dermal Rat 1170 mg/kg

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