Chromium(II) fluoride
Agent Name
Chromium(II) fluoride
CAS Number
10049-10-2
Formula
Cr-F2
Major Category
Metals
Synonyms
Chromium difluoride; Chromium(II)fluoride; [ChemFinder] Chromous fluoride; [ChemIDplus]
Category
Chromium Compounds, Inorganic
Description
Blue-green, iridescent crystals [Merck Index] Steel-gray lustrous crystals; [MSDSonline]
Sources/Uses
Used in chromizing, as a catalyst, and in nuclear reactor fuels; [Merck Index]
Comments
"The relatively unstable divalent (chromous) ion is rapidly oxidized to the trivalent (Cr(III); chromic] form." [Nordberg, p. 718] "Bivalent compounds are unstable and have little commercial value." [Asthma in the Workplace, p. 296] May be harmful after ingestion, inhalation, or skin contact; May damage eyes; "Stable under recommended storage conditions." [MSDSonline] A strong eye and skin irritant; [Hawley] See "Chromium."
Biomedical References
Exposure Assessment
BEI
Fluorides in urine = 2 mg/L prior to shift or 3 mg/L at end of shift; (Repeated measurements recommended.)
TLV (ACGIH)
2.5 mg/m3, as F
PEL (OSHA)
0.5 mg/m3, as Cr (2.5 mg/m3, as F)
MAK
1 mg/m3, as F, inhalable fraction
Explanatory Notes
VP = practically zero; mp = 1900 deg C; [MSDSonline]
Diseases, Processes, and Activities Linked to This Agent
Other Information
No other related information on this agent was found.