Potassium dichromate

• Catalog No.: 60188
• CAS Number: 7778-50-9
• M. F.: Cr2K2O7
• M. W.: 294.1846
• Purity: ≥99.5% (RT)

SYNONYMS

• Title: 重铬酸钾
• IUPAC name: dipotassium [(oxidodioxochromio)oxy]chromiumoylolate
• IUPAC Traditional name: dipotassium chromate
• Synonyms: Potassium bichromate; 红矾钾

DATABASE IDS

• CAS Number: 7778-50-9
• PubChem SID: 24881808
• MDL Number: MFCD00011367
• EC Number: 231-906-6

PROPERTIES

• 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 3086 6.1/PG 1
• Risk Statements: 45-46-60-61-8-21-25-26-34-42/43-48/23-50/53
• RTECS: HX7680000
• Safety Statements: 53-45-60-61
• Hazard Class: 6.1
• UN Number: 3086
• Packing Group: 1
• 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: Oxidising (O)
• European Hazard Symbols: Highly toxic (T+)
• European Hazard Symbols: Nature polluting (N)
• abs.: absorption0.1M/, H2O no transmittance (UV)
• Antion Traces: chloride (Cl-): ≤10 mg/kg
• Antion Traces: sulfate (SO42-): ≤50 mg/kg
• Cation Traces: Ca: ≤20 mg/kg
• Cation Traces: Cd: ≤10 mg/kg
• Cation Traces: Co: ≤20 mg/kg
• Cation Traces: Cu: ≤10 mg/kg
• Cation Traces: Fe: ≤20 mg/kg
• Cation Traces: Mg: ≤5 mg/kg
• Cation Traces: Mn: ≤5 mg/kg
• Cation Traces: Na: ≤200 mg/kg
• Cation Traces: Ni: ≤20 mg/kg
• Cation Traces: Pb: ≤50 mg/kg
• Cation Traces: Sr: ≤50 mg/kg
• Cation Traces: Zn: ≤10 mg/kg
• Impurities: insoluble matter, passes filter test
• Linear Formula: K2Cr2O7
• Loss on Drying: ≤0.05% loss on drying, 110 °C
• Product Line: BioUltra
• Purity: ≥99.5% (RT)
• Melting Point: 398 °C(lit.)
• pH: 3.5-5.0 (25 °C, 0.1 M in H2O)
• Solubility: H2O: soluble0.1 M at 20 °C, clear, orange