Ammonium chromate

• Catalog No.: 09707
• CAS Number: 7788-98-9
• M. F.: CrH8N2O4
• M. W.: 152.07062
• Purity: ≥99.0% (RT)

SYNONYMS

• Title: 铬酸铵
• IUPAC name: dioxochromiumdiol diamine
• IUPAC Traditional name: chromic acid diamine
• Synonyms: Chromic acid ammonium salt

DATABASE IDS

• CAS Number: 7788-98-9
• EC Number: 232-138-4
• MDL Number: MFCD00015958
• PubChem SID: 24846396

PROPERTIES

• abs.: absorption1M/, H2O no transmittance (UV)
• Antion Traces: chloride (Cl-): ≤50 mg/kg
• Antion Traces: sulfate (SO42-): ≤100 mg/kg
• Cation Traces: Ca: ≤50 mg/kg
• Cation Traces: Cd: ≤10 mg/kg
• Cation Traces: Co: ≤10 mg/kg
• Cation Traces: Cu: ≤10 mg/kg
• Cation Traces: Fe: ≤20 mg/kg
• Cation Traces: K: ≤50 mg/kg
• Cation Traces: Mg: ≤10 mg/kg
• Cation Traces: Mn: ≤10 mg/kg
• Cation Traces: Na: ≤50 mg/kg
• Cation Traces: Ni: ≤20 mg/kg
• Cation Traces: Pb: ≤50 mg/kg
• Cation Traces: Zn: ≤50 mg/kg
• Impurities: insoluble matter, passes filter test
• Linear Formula: (NH4)2CrO4
• Product Line: BioUltra
• Purity: ≥99.0% (RT)
• Density: 1.91 g/mL at 25 °C(lit.)
• pH: 7.0-8.5 (25 °C, 1 M in H2O)
• Solubility: H2O: soluble1 M at 20 °C, clear, yellow
• GHS Signal Word: Danger
• GHS Hazard statements: H272-H314-H334-H350i-H400
• European Hazard Symbols: Oxidising (O)
• European Hazard Symbols: Toxic (T)
• European Hazard Symbols: Nature polluting (N)
• Personal Protective Equipment: Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges
• GHS Precautionary statements: P201-P220-P261-P273-P280-P305 + P351 + P338
• RID/ADR: UN 1479 5.1/PG 2
• Risk Statements: 49-8-34-43-50/53
• RTECS: GB2880000
• Safety Statements: 53-17-26-36/37/39-45-60-61
• Hazard Class: 5.1
• UN Number: 1479
• Packing Group: 2
• German water hazard class: 3

DETAILS

Description (English)

Application
Ammonium chromate has been used to study the α-annealing of recoil atoms in chromates. Ammonium chromate has also been used to report the kinetics of decomposition as well as the thermal decomposition products of ammonium chromate.

Description (简体中文)

Application
Ammonium chromate has been used to study the α-annealing of recoil atoms in chromates. Ammonium chromate has also been used to report the kinetics of decomposition as well as the thermal decomposition products of ammonium chromate.