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HomeProduct name listSILVER CHROMATE

SILVER CHROMATE

Synonym(s):Chromic acid, disilver(I)salt

  • CAS NO.:7784-01-2
  • Empirical Formula: AgCrH2O4
  • Molecular Weight: 225.88
  • MDL number: MFCD00003402
  • EINECS: 232-043-8
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2023-05-09 09:30:55
SILVER CHROMATE Structural

What is SILVER CHROMATE?

Chemical properties

crystalline powder

Physical properties

Red monoclinic crystals or brownish-red powder; density 5.625 g/cm3; insoluble in water; soluble in nitric acid, ammonia and solutions of alkali cyanides and chromates.

The Uses of SILVER CHROMATE

Catalyst for formation of aldol from alcohol; formed at end point of Mohr titration of halides.

Preparation

Silver chromate is prepared by slowly adding a solution of potassium chromate to a solution of silver nitrate:
2Ag+ (aq) + Cr4O2- (aq) → Ag2CrO4 (s)
The precipitate is washed with hot water.

Purification Methods

Wash the red-brown powder with H2O, dry it in a vacuum, then powder well and dry again in a vacuum at 90o/5hours. Its solubility in H2O is 0.0014% at 10o. Store it in the dark. [Cardillo & Shimizu J Org Chem 42 4268 1977.]

Properties of SILVER CHROMATE

Density  5.625 g/mL at 25 °C (lit.)
form  Powder
Specific Gravity 5.625
color  Red-brown
Water Solubility  Slightly soluble in water. Soluble in HNO<sub>3</sub> and ammonia
Sensitive  Light Sensitive
Merck  14,8510
Solubility Product Constant (Ksp) pKsp: 11.95
Exposure limits OSHA: Ceiling 0.1 mg/m3
NIOSH: IDLH 15 mg/m3; TWA 0.0002 mg/m3
Stability: Stable. but light-sensitive and hygroscopic.
CAS DataBase Reference 7784-01-2(CAS DataBase Reference)
EPA Substance Registry System Chromic acid (H2CrO4), disilver(1+) salt (7784-01-2)

Safety information for SILVER CHROMATE

Signal word Danger
Pictogram(s)
ghs
Flame Over Circle
Oxidizers
GHS03
ghs
Exclamation Mark
Irritant
GHS07
ghs
Health Hazard
GHS08
ghs
Environment
GHS09
GHS Hazard Statements H272:Oxidising liquids;Oxidising solids
H317:Sensitisation, Skin
H350:Carcinogenicity
H410:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes P201:Obtain special instructions before use.
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P273:Avoid release to the environment.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P302+P352:IF ON SKIN: wash with plenty of soap and water.
P308+P313:IF exposed or concerned: Get medical advice/attention.

Computed Descriptors for SILVER CHROMATE

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