| Agent Name |
Calcium cyanamide |
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| CAS Number |
156-62-7 |
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| Formula |
C-N2.Ca |
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| Major Category |
Nitrogen Compounds |
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| Synonyms |
Abstem; Aero cyanamid granular; Aero cyanamid special grade; Aero-cyanamid; Alzodef; CCC; CY-L 500; Calcii carbimidum [INN-Latin]; Calcium carbimide; Calcium cyanamide; Calciumcarbimidum; Carbimida calcica [INN-Spanish]; Carbimide calcique [INN-French]; Carbodimid calcium; Cyanamide calcique [French]; Cyanamide, calcium salt (1:1); Dipsan; Dormex; Lime nitrogen; Lime-nitrogen; Nitrogen lime; Nitrolime; Perlka; USAF CY-2; [ChemIDplus] UN1403 |
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| Category |
Other Nitrogen Compounds |
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| Description |
Colorless, gray, or black crystals or powder (fertilizer); Note: Commercial grades may contain calcium carbide; [NIOSH] |
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| Sources/Uses |
Used to manufacture calcium cyanide and dicyandiamide; used to desulfurize specialty steels; [ACGIH] |
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| Comments |
Commercial grade calcium cyanamide decomposes in water to release ammonia and acetylene. Calcium cyanamide is a skin irritant and potential sensitizer. An antabuse-like reaction may occur in exposed workers who drink alcohol. [ACGIH] On contact with water, may produce corrosive solutions; [CAMEO] Solutions may be corrosive to eyes; In animal experiments, the dry form is not irritating, but solutions may cause severe irritation after 24 hours of contact; [CHEMINFO] |
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| Restricted |
"The product is no longer used as a defoliant, fertilizer, or herbicide." [ACGIH] |
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| Exposure Assessment |
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| Skin Designation (ACGIH) |
No |
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| TLV (ACGIH) |
0.5 mg/m3 |
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| MAK |
1 mg/m3, inhalable fraction |
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| Lethal Concentration |
LC50 (rats) > 150 mg/m3/4h |
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| Explanatory Notes |
The Guide from the Emergency Response Guidebook is for "Calcium cyanamide, with more than 0.1% Calcium carbide." |
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| Flammability (NFPA) |
3: may ignite at ambient temperature |
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| Adverse Effects |
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| Dermatotoxin |
Skin Burns |
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| Skin Sensitizer |
Yes |
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| Links to Other NLM Databases |
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| Health Studies |
Human Health Effects from Hazardous Substances Data Bank: CALCIUM CYANAMIDE
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