# NIOSH Pocket Guide to Chemical Hazards
Cyanamide | CAS 420-04-2
NH2CN | RTECS GS5950000
Synonyms & Trade Names Amidocyanogen, Carbimide, Carbodiimide, Cyanogen nitride, Hydrogen cyanamide [Note: Cyanamide is also a synonym for Calcium cyanamide.] | DOT ID & Guide
Exposure Limits | NIOSH REL: TWA 2 mg/m3
OSHA PEL†: none
IDLH N.D. | Conversion
Physical Description Crystalline solid.
MW: 42.1 | BP: 500°F (Decomposes) | MLT: 113°F | Sol(59°F): 78%
VP: ? | IP: 10.65 eV |  | Sp.Gr: 1.28
Fl.P: 286°F | UEL: ? | LEL: ? |
Combustible Solid
Incompatibilities & Reactivities Above 104°F: Moisture, acids, or alkalis; 1,2-phenylene diamine salts [Note: Polymerization may occur on evaporation of aqueous solutions.]
Measurement Methods NIOSH 0500
Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet or contaminated Change: Daily Provide: Eyewash, Quick drench | First Aid (See procedures) Eye: Irrigate immediately Skin: Water flush immediately Breathing: Respiratory support Swallow: Medical attention immediately
Respirator Recommendations To be added later
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms Irritation eyes, skin, respiratory system; eye, skin burns; miosis, salivation, lacrimation (discharge of tears), twitching; Antabuse-like effects
Target Organs Eyes, skin, respiratory system, central nervous system
See also: INTRODUCTION