| Company Name: |
Alfa Aesar |
| Tel: |
400-6106006 |
| Email: |
saleschina@alfa-asia.com |
|
| | SILVER CHROMATE Basic information |
| | SILVER CHROMATE Chemical Properties |
| density | 5.625 g/mL at 25 °C (lit.) | | storage temp. | RT, protect from light | | form | Powder | | Specific Gravity | 5.625 | | color | Red-brown | | Water Solubility | Slightly soluble in water. Soluble in HNO<sub>3</sub> and ammonia | | Specific Heat Capacity | Cp(crystal): 0.63 J/(g·K), at 25℃ | | 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. | | Major Application | PEM fuel cells
material synthesis precursor | | InChI | 1S/2Ag.Cr.4O/q2*+1;;;;2*-1 | | InChIKey | OJKANDGLELGDHV-UHFFFAOYSA-N | | SMILES | [Ag+].[Ag+].[O-][Cr]([O-])(=O)=O | | CAS DataBase Reference | 7784-01-2(CAS DataBase Reference) | | EPA Substance Registry System | Chromic acid (H2CrO4), disilver(1+) salt (7784-01-2) |
| Hazard Codes | O,T,N | | Risk Statements | 8-43-49-50/53 | | Safety Statements | 17-45-53-61-60 | | RIDADR | 3087 | | WGK Germany | 3 | | TSCA | TSCA listed | | HazardClass | 5.1 | | PackingGroup | III | | Storage Class | 5.1B - Oxidizing hazardous materials | | Hazard Classifications | Aquatic Acute 1
Aquatic Chronic 1
Carc. 1B
Ox. Sol. 2
Skin Sens. 1 |
| Provider | Language |
|
ALFA
| English |
| | SILVER CHROMATE Usage And Synthesis |
| 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. | | Uses | 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.] |
| | SILVER CHROMATE Preparation Products And Raw materials |
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