NIOSH Pocket Guide to Chemical Hazards

Chromyl chloride

CAS 14977-61-8


RTECS GB5775000
Synonyms & Trade Names
Chlorochromic anhydride, Chromic oxychloride, Chromium chloride oxide, Chromium dichloride dioxide, Chromium dioxide dichloride, Chromium dioxychloride, Chromium oxychloride, Dichlorodioxochromium
DOT ID & Guide
1758 137


NIOSH REL: Ca 0.001 mg Cr(VI)/m3 See Appendix A See Appendix C
OSHA PEL: none
IDLH Ca [N.D.] See: IDLH INDEX Conversion
Physical Description
Deep-red liquid with a musty, burning, acrid odor. [Note: Fumes in moist air.]
MW: 154.9
BP: 243°F
FRZ: -142°F
Sol: Reacts
VP: 20 mmHg
IP: 12.60 eV

Sp.Gr(77°F): 1.91
Fl.P: 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.]
Measurement Methods
None available
See: NMAM or OSHA Methods
Personal Protection & Sanitation (See protection)
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
Important additional information about respirator selection
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
(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
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms Irritation to eyes, skin, upper respiratory system; eye, skin burns; [potential occupational carcinogen]
Target Organs Eyes, skin, respiratory system

Cancer Site [lung cancer]
See also: INTRODUCTION   See ICSC CARD: 0854   See MEDICAL TESTS: 0052