NIOSH Pocket Guide to Chemical Hazards

Cyanogen chloride			CAS 506-77-4
ClCN			RTECS GT2275000
Synonyms & Trade Names Chlorcyan, Chlorine cyanide, Chlorocyanide, Chlorocyanogen			DOT ID & Guide 1589 125 (inhibited)

Exposure Limits	NIOSH REL: C 0.3 ppm (0.6 mg/m³)
	OSHA PEL†: none
IDLH N.D. See: IDLH INDEX		Conversion 1 ppm = 2.52 mg/m³

Physical Description Colorless gas or liquid (below 55°F) with an irritating odor. [Note: Shipped as a liquefied gas. A solid below 20°F. Forms cyanide in the body.]
MW: 61.5	BP: 55°F	FRZ: 20°F	Sol: 7%
VP: 1010 mmHg	IP: 12.49 eV	RGasD: 2.16	Sp.Gr: 1.22 (Liquid at 32°F)
Fl.P: NA	UEL: NA	LEL: NA
Nonflammable Gas
Incompatibilities & Reactivities Water, acids, alkalis, ammonia, alcohols [Note: Can react very slowly with water to form hydrogen cyanide. May be stabilized to prevent polymerization.]

Measurement Methods
None available
See: NMAM or OSHA Methods

Personal Protection & Sanitation (See protection) Skin: Prevent skin contact (liquid) Eyes: Prevent eye contact (liquid) Wash skin: When contaminated (liquid) Remove: When wet or contaminated (liquid) Change: No recommendation Provide: Eyewash (liquid), Quick drench (liquid)	First Aid (See procedures) Eye: Irrigate immediately Skin: Water wash immediately (liquid) Breathing: Respiratory support Swallow: Medical attention immediately (liquid)
Important additional information about respirator selection Respirator Recommendations Not available.
Exposure Routes inhalation, skin absorption (liquid), ingestion (liquid), skin and/or eye contact (liquid)
Symptoms Irritation eyes, upper respiratory system; cough, delayed pulmonary edema; lassitude (weakness, exhaustion), headache, dizziness, confusion, nausea, vomiting; irregular heartbeat; irritation skin (liquid)
Target Organs Eyes, skin, respiratory system, central nervous system, cardiovascular system

See also: INTRODUCTION See ICSC CARD: 1053