Calcium cyanamide
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Calcium cyanamide
structure -
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CAS No:
156-62-7
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Formula:
CH2N2.Ca
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Chemical Name:
Calcium cyanamide
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Synonyms:
Cyanamide,calcium salt (1:1);Calcium cyanamide;Calcium carbimide;Cyanamid;Lime nitrogen;Nitrogen lime;Nitrolim;Nitrolime;CCC;Alzodef;Cy-L 500;Calcium cyanamide (CaCN2);Perlka;Cyanoiminocalcium;1015936-91-0;1202864-94-5;1203558-43-3;1215336-73-4;2195408-26-3
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CAS No:
Characteristics
26.3
0.20038
Gray to dark gray Powder
2.29 g/cm3 @ Temp: 20 °C
1340 °C
258.5ºC at 760 mmHg
42.1ºC
Oral-Rat LD50: 158 mg/kg; Oral-Mouse LD50: 334 mg/kg
Toxic ammonia and acetylene gas are flammable when exposed to water, moist air, and acid; thermal decomposition releases toxic nitrogen oxides and cyanide fumes
Safety Information
III
4.3
UN 1403 4.3/PG 3
2
22-37-41-15-43-37/38
26-39-43-36/37/39-22-45-28
GS6000000
Xn,F
Storehouse ventilated at low temperature and dry; protected from moisture; stored separately from oxidants, halogens, and strong acids
Combustible acetylene gas can explode in case of acid and water
P231 + P232; P280; P301 + P312 + P330; P304 + P340 + P312; P305 + P351 + P338 + P310; P333 + P313
H261; H302; H315; H317; H318; H335
Calcium cyanamide Use and Manufacturing
Industrial production of calcium cyanamide is obtained by treating calcium carbide powder with nitrogen at high temperature. Reaction equation: CaC2+N2→CaCN2 crushed calcium carbide, ball milled, mixed with 1% to 3% fluorite or calcium chloride, mixed, heated in a rotary kiln to about 1100°C, and reacted with nitrogen to obtain the product. Pure calcium cyanamide can be obtained by reacting ammonia, carbon monoxide and calcium carbonate.
As fertilizer, defoliant, herbicide, pesticide; manufacture of and refining of iron; manufacture of calcium cyanide, melamine, dicyandiamide.
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