Calcium cyanamide

Calcium cyanamide
Names
	IUPAC name Calcium cyanamide
	Other names Cyanamide calcium salt, Calcium carbondiamide, Lime Nitrogen, UN 1403, Nitrolime
Identifiers
CAS Number	156-62-7 ;
3D model (JSmol)	Interactive image; Interactive image;
ChemSpider	21106503 ;
ECHA InfoCard	100.005.330
EC Number	205-861-8;
PubChem CID	45051688;
RTECS number	GS6000000;
UNII	ZLR270912W ;
UN number	1403
CompTox Dashboard (EPA)	DTXSID6020353 ;
	InChI InChI=1S/CN2.Ca/c2-1-3;/q-2;+2 Key: MYFXBBAEXORJNB-UHFFFAOYSA-N ; InChI=1/CN2.Ca/c2-1-3;/q-2;+2 Key: MYFXBBAEXORJNB-UHFFFAOYAU;
	SMILES [Ca+2].[N-2]C#N; [Ca+2].[N-]=C=[N-];
Properties
Chemical formula	CaCN2
Molar mass	80.102 g/mol
Appearance	White solid (Often gray or black from impurities)
Odor	odorless
Density	2.29 g/cm3
Melting point	1,340 °C (2,440 °F; 1,610 K)
Boiling point	1,150 to 1,200 °C (2,100 to 2,190 °F; 1,420 to 1,470 K) (sublimes)
Solubility in water	Reacts
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H302, H318, H335
Precautionary statements	P231+P232, P261, P280, P305+P351+P338
NFPA 704 (fire diamond)	3 0 1 W
Flash point	Non-flammable
	NIOSH (US health exposure limits):
PEL (Permissible)	none
REL (Recommended)	TWA 0.5 mg/m3
IDLH (Immediate danger)	N.D.
Safety data sheet (SDS)	ICSC 1639
Related compounds
Related compounds	Cyanamide; Calcium carbide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Calcium cyanamide, also known as Calcium carbondiamide, Calcium cyan-2°-amide or Calcium cyanonitride is the inorganic compound with the formula CaCN₂. It is the calcium salt of the cyanamide (CN²⁻
₂) anion. This chemical is used as fertilizer^[3] and is commercially known as nitrolime. It also has herbicidal activity and in the 1950s was marketed as cyanamid.^[4]^[5] It was first synthesized in 1898 by Adolph Frank and Nikodem Caro (Frank–Caro process).^[6]

^ Pradyot Patnaik. Handbook of Inorganic Chemicals. McGraw-Hill, 2002, ISBN 0-07-049439-8
^ ^a ^b NIOSH Pocket Guide to Chemical Hazards. "#0091". National Institute for Occupational Safety and Health (NIOSH).
^ Auchmoody, L.R.; Wendel, G.W. (1973). "Effect of calcium cyanamide on growth and nutrition of plan fed yellow-poplar seedlings". Res. Pap. Ne-265. Uppdr Darby, Pa: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 11 P. 265. U.S. Department of Agriculture, Forest Service. Retrieved 2008-07-18.
^ Carr, Charles W. (1953). The use of cyanamid for weed control in vegetable crops (MSc thesis). University of Massachusetts Amherst. doi:10.7275/18863820.
^ Cite error: The named reference scher was invoked but never defined (see the help page).
^ "History of Degussa: Rich harvest, healthy environment: Calcium cyanamide". Archived from the original on 2006-10-19. Retrieved 2008-07-18.

[1] Pradyot Patnaik. Handbook of Inorganic Chemicals. McGraw-Hill, 2002, ISBN 0-07-049439-8

[PGCH-2] NIOSH Pocket Guide to Chemical Hazards. "#0091". National Institute for Occupational Safety and Health (NIOSH).

[usforest-3] Auchmoody, L.R.; Wendel, G.W. (1973). "Effect of calcium cyanamide on growth and nutrition of plan fed yellow-poplar seedlings". Res. Pap. Ne-265. Uppdr Darby, Pa: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 11 P. 265. U.S. Department of Agriculture, Forest Service. Retrieved 2008-07-18.

[4] Carr, Charles W. (1953). The use of cyanamid for weed control in vegetable crops (MSc thesis). University of Massachusetts Amherst. doi:10.7275/18863820.

[scher-5] Cite error: The named reference scher was invoked but never defined (see the help page).

[6] "History of Degussa: Rich harvest, healthy environment: Calcium cyanamide". Archived from the original on 2006-10-19. Retrieved 2008-07-18.

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