# NIOSH Pocket Guide to Chemical Hazards
Chromyl chloride | CAS 14977-61-8
Cr(OCl)2 | 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
Exposure Limits | NIOSH REL: Ca 0.001 mg Cr(VI)/m3 See Appendix A See Appendix C
OSHA PEL: none
IDLH Ca [N.D.] | 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 | UEL: NA | LEL: 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
Personal Protection & Sanitation 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
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms Irritation eyes, skin, upper respiratory system; eye, skin burns
Target Organs Eyes, skin, respiratory system Cancer Site [lung cancer]
See also: INTRODUCTION