Ammonium chromate , 98+ , 7788-98-9

Synonym(s):
Chromic acid ammonium salt

CAS NO.：7788-98-9

Empirical Formula: CrH8N2O4

Molecular Weight: 152.07

MDL number: MFCD00015958

EINECS: 232-138-4

PRODUCT Properties

• Melting point: 180°C (dec.)
• Density: 1.91 g/mL at 25 °C (lit.)
• solubility: H₂O: 1 M at 20 °C, clear, yellow
• form: Crystalline
• Specific Gravity: 1.91
• color: Yellow-orange
• Water Solubility: Soluble in water. Slightly soluble in liquid ammonia, acetone, methanol. Insoluble in ethanol.
• Merck: 14,510
• 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
• InChI: 1S/Cr.2H3N.2H2O.2O/h;2*1H3;2*1H2;;/q+2;;;;;;/p-2
• InChIKey: FEIXNIOTSKFSAZ-UHFFFAOYSA-L
• SMILES: N.N.O[Cr](O)(=O)=O
• CAS DataBase Reference: 7788-98-9(CAS DataBase Reference)
• EPA Substance Registry System: Ammonium chromate (7788-98-9)

Description and Uses

Reagent for the preparation of a solid heterogeneous oxidizing agent for liquid phase oxidation of alcohols.

Safety

• Symbol(GHS): GHS03,GHS05,GHS08,GHS09
• Signal word: Danger
• Hazard statements: H272-H314-H334-H350-H350i-H410
• Precautionary statements: P210-P260-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338
• PPE: Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
• Hazard Codes: O,T,N
• Risk Statements: 49-8-43-50/53-34
• Safety Statements: 53-17-45-60-61-36/37/39-26
• RIDADR: UN 1479 5.1/PG 2
• WGK Germany: 3
• RTECS: GB2880000
• TSCA: TSCA listed
• HazardClass: 5.1
• PackingGroup: III
• Storage Class: 5.1B - Oxidizing hazardous materials
• Hazard Classifications: Aquatic Acute 1; Aquatic Chronic 1; Carc. 1A; Carc. 1B Inhalation; Eye Dam. 1; Ox. Sol. 2; Resp. Sens. 1; Skin Corr. 1B
• Hazardous Substances Data: 7788-98-9(Hazardous Substances Data)