Chromium chloride , 97% , 10049-05-5

Synonym(s):
Chromium dichloride;Chromium(II) chloride;Chromous chloride

CAS NO.：10049-05-5

Empirical Formula: Cl2Cr

Molecular Weight: 122.9

MDL number: MFCD00010947

EINECS: 233-163-3

PRODUCT Properties

• Melting point: 824 °C(lit.)
• Boiling point: 1120°C (estimate)
• Density: 2.9 g/mL at 25 °C(lit.)
• storage temp.: Store below +30°C.
• solubility: soluble in H2O
• form: powder
• Specific Gravity: 2.878
• color: Off-white to green-gray
• Water Solubility: Soluble in water. Insoluble in alcohol and ether.
• Sensitive: Air & Moisture Sensitive
• Crystal Structure: CaCl2 type
• crystal system: Nogata
• Merck: 14,2244
• Space group: Pnnm
• Lattice constant:
  • a/nm: 0.598
  • b/nm: 0.664
  • c/nm: 0.348
  • α/o: 90
  • β/o: 90
  • γ/o: 90
  • V/nm3: 0.1382
• Exposure limits: NIOSH: IDLH 250 mg/m3; TWA 0.5 mg/m3
• Stability: Stable, but decomposes in water or moist air. Incompatible with water, oxidizing agents, active metals.

Description and Uses

Chromous chloride is a white-to-blue solid orlustrous needles which turn blue in water. Molecularweight =122.90; Boiling point =1300℃; Meltingpoint =824℃. Hazard Identification (based on NFPA-704M Rating System): Health 1, Flammability 0, Reactivity 0.Soluble in water.

The vapor-phase co-reductions with other metal halides by hydrogen results in finely divided intermetallics with applications as structural materials or compounds with useful thermoelectric, magnetic, and oxidation-resistance properties.

Safety

• Symbol(GHS): GHS07
• Signal word: Warning
• Hazard statements: H302
• Precautionary statements: P301+P312+P330
• Hazard Codes: Xn
• Risk Statements: 22-36/37/38
• Safety Statements: 26-36
• WGK Germany: 3
• RTECS: GB5250000
• F: 1-10
• TSCA: Yes
• HS Code: 2827 39 85
• Toxicity: LD50 orally in rats: 1.87 g/kg (Smyth)