Ammonium dichromate

• Catalog No.: 09705
• CAS Number: 7789-09-5
• M. F.: Cr2H8N2O7
• M. W.: 252.06492
• Purity: ≥97.0% (RT)

SYNONYMS

• Title: 重铬酸铵
• IUPAC name: [(hydroxydioxochromio)oxy]chromiumoylol diamine
• IUPAC Traditional name: dichromic acid diamine
• Synonyms: 红矾铵; Ammonium bichromate

DATABASE IDS

• MDL Number: MFCD00010879
• EC Number: 232-143-1
• PubChem SID: 24846395
• CAS Number: 7789-09-5

PROPERTIES

• European Hazard Symbols: Highly 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-P260-P273-P280-P284
• RID/ADR: UN 1439 5.1/PG 2
• Risk Statements: 45-46-60-61-2-8-21-25-26-34-42/43-48/23-50/53
• Safety Statements: 53-45-60-61
• Hazard Class: 5.1
• UN Number: 1439
• Packing Group: 2
• German water hazard class: 3
• GHS Signal Word: Danger
• GHS Hazard statements: H272-H301-H312-H314-H317-H330-H334-H340-H350-H360FD-H372-H410
• European Hazard Symbols: Explosive (E)
• Antion Traces: chloride (Cl-): ≤200 mg/kg
• Antion Traces: sulfate (SO42-): ≤200 mg/kg
• Cation Traces: Ca: ≤50 mg/kg
• Cation Traces: Cd: ≤50 mg/kg
• Cation Traces: Co: ≤50 mg/kg
• Cation Traces: Cu: ≤50 mg/kg
• Cation Traces: Fe: ≤50 mg/kg
• Cation Traces: K: ≤2000 mg/kg
• Cation Traces: Na: ≤500 mg/kg
• Cation Traces: Ni: ≤50 mg/kg
• Cation Traces: Pb: ≤50 mg/kg
• Cation Traces: Zn: ≤50 mg/kg
• Grade: purum p.a.
• Linear Formula: (NH4)2Cr2O7
• Loss on Drying: ≤3% loss on drying
• Purity: ≥97.0% (RT)
• Melting Point: 170 °C (dec.)(lit.)
• pH: 3.0-4.0 (25 °C, 50 mg/mL in H2O)
• Vapor Density: 8.7 (vs air)