Calcium cyanamide

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 and is commercially known as nitrolime. It also has herbicidal activity and in the 1950s was marketed as cyanamid. It was first synthesized in 1898 by Adolph Frank and Nikodem Caro (Frank–Caro process).

Calcium cyanamide
Names
IUPAC name
Calcium cyanamide
Other names
Cyanamide calcium salt, Calcium carbondiamide, Lime Nitrogen, UN 1403, Nitrolime
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.005.330
EC Number
  • 205-861-8
RTECS number
  • GS6000000
UNII
UN number 1403
  • InChI=1S/CN2.Ca/c2-1-3;/q-2;+2 N
    Key: MYFXBBAEXORJNB-UHFFFAOYSA-N N
  • InChI=1/CN2.Ca/c2-1-3;/q-2;+2
    Key: MYFXBBAEXORJNB-UHFFFAOYAU
  • [Ca+2].[N-2]C#N
  • [Ca+2].[N-]=C=[N-]
Properties
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)
Reacts
Hazards
GHS labelling:
Danger
H302, H318, H335
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).
N verify (what is YN ?)
Infobox references
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