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Chromyl chloride

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Synonyms & Trade Names
Chlorochromic anhydride, Chromic oxychloride, Chromium chloride oxide, Chromium dichloride dioxide, Chromium dioxide dichloride, Chromium dioxychloride, Chromium oxychloride, Dichlorodioxochromium
CAS No.
14977-61-8
RTECS No.
GB5775000
DOT ID & Guide
1758 137
Formula
Cr(OCl)₂
Conversion
IDLH
Ca [N.D.]
See: IDLH INDEX
Exposure Limits
NIOSH REL
Ca TWA 0.001 mg Cr(VI)/m3 See Appendix A See Appendix C
OSHA PEL
none
Measurement Methods
None available
See: NMAM or OSHA Methods
Physical Description
Deep-red liquid with a musty, burning, acrid odor. [Note: Fumes in moist air.]
Molecular Weight
154.9
Boiling Point
243°F
Freezing Point
-142°F
Solubility
Reacts
Vapor Pressure
20 mmHg
Ionization Potential
12.60 eV
Specific Gravity
(77°F): 1.91
Flash Point
NA
Upper Explosive Limit
NA
Lower Explosive Limit
NA
Noncombustible Liquid, but a powerful oxidizer.
Incompatibilities & Reactivities
Water, combustible substances, halides, phosphorus, turpentine [Note: Reacts violently in water; forms chromic acid, chromic chloride, hydrochloric acid & chlorine. Corrodes common metals.]
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
irritation eyes, skin, upper respiratory system; eye, skin burns [potential occupational carcinogen]
Target Organs
Eyes, skin, respiratory system
Cancer Site
[lung cancer]
Personal Protection/Sanitation
(See protection codes)
Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:When contaminated
Remove:When wet or contaminated
Change:No recommendation
Provide:Eyewash, Quick drench
First Aid
(See procedures)
Eye:Irrigate immediately
Skin:Water flush immediately
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations

NIOSH

At concentrations above the NIOSH REL, or where there is no REL, at any detectable concentration:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus

Escape:
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister
Any appropriate escape-type, self-contained breathing apparatus

Important additional information about respirator selection

See also
INTRODUCTION   ICSC CARD: 0854
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health