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: 2024-12-18 14:15:32
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) |
 Flame Over Circle Oxidizers GHS03  Exclamation Mark Irritant GHS07  Health Hazard GHS08  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
SILVER CHROMATE manufacturer
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Phone:+91-7499586750
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product: 7784-01-2 SILVER CHROMATE 99%
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