Calcium cyanamide
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Synonyms & Trade Names
Calcium carbimide, Cyanamide [Calcium cyanamide], Lime nitrogen, Nitrogen lime [Note: Cyanamide is also a synonym for Hydrogen cyanamide, NH2CN.]Physical Description
Colorless, gray, or black crystals or powder. [fertilizer] [Note: Commercial grades may contain calcium carbide.]Molecular Weight
80.1Boiling Point
SublimesMelting Point
2444°FSolubility
InsolubleVapor Pressure
0 mmHg (approx)Ionization Potential
NASpecific Gravity
2.29Flash Point
NAUpper Exposive Limit
NALower Explosive Limit
NA
Noncombustible Solid, but a fire risk if it contains calcium carbide.
Incompatibilities & Reactivities
Water [Note: May polymerize in water or alkaline solutions to dicyanamide. Decomposes in water to form acetylene & ammonia.]Exposure Routes
inhalation, ingestion, skin and/or eye contactSymptoms
irritation eyes, skin, respiratory system; headache, dizziness, rapid breath, low blood pressure, nausea, vomiting; skin burns, sensitization; cough; Antabuse-like effectsTarget Organs
Eyes, skin, respiratory system, vasomotor systemPersonal Protection/Sanitation
(See protection codes)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:Soap flush immediately
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations
Not available.
- Page last reviewed:April 11, 2016
- Page last updated:April 11, 2016
- Content source:
- National Institute for Occupational Safety and Health (NIOSH) Education and Information Division