Calcium cyanamide supplier

Name
Calcium cyanamide
EINECS 205-861-8
CAS No. 156-62-7
Article Data378
CAS DataBase
Density 2.29 g/cm³
Solubility insoluble H2O, but undergoes hydrolysis releasing acetylene and ammonia [HAW93] [MER06]
Melting Point >300 °C(lit.)
Formula CCaN₂
Boiling Point 258.5 °C at 760 mmHg
Molecular Weight 80.1024
Flash Point 42.1 °C
Transport Information UN 1403
Appearance Black powder or granular
Safety 26-39-43-36/37/39-22
Risk Codes 22-37-41-15
Molecular Structure
Hazard Symbols Xn
Synonyms Calciumcyanamide (7CI);Alzodef;Calcium cyanamide (CaCN2);Cy-L 500;Cyanamid;Lime nitrogen;Nitrogen lime;Nitrolim;Nitrolime;Perlka;
PSA 36.15000
LogP 0.20038

Synthetic route

: calcium cyanide

A: 156-62-7
calcium cyanamide

B: 7440-44-0
pyrographite

Conditions

Conditions	Yield
With nitrogen In neat (no solvent) heating at 600°C for 2.5 h; color change from grey to black;;	A 100% B 100%
With nitrogen In neat (no solvent) heating at 600°C for 30 min; color change from grey to black;;	A 99.1% B 99.1%
With nitrogen In neat (no solvent) heating at 400°C for 5 h; color change from grey to black;;	A 51.8% B 51.8%
With nitrogen In neat (no solvent) heating at 400°C for 30 min; color change from grey to black;;	A 32.8% B 32.8%
In neat (no solvent) decompn.;;

: 74-90-8
hydrogen cyanide

: calcium oxide

A: 201230-82-2
carbon monoxide

B: 1333-74-0
hydrogen

C: 156-62-7
calcium cyanamide

Conditions

Conditions	Yield
In neat (no solvent) equilibrium; at 800°C on right side;; pure product;;	A n/a B n/a C 99%
In neat (no solvent) equilibrium; at 800°C on right side;; pure product;;	A n/a B n/a C 99%
In neat (no solvent)
In neat (no solvent)

...Expand

: 773837-37-9
sodium cyanide

: 156-62-7
calcium cyanamide

Conditions

Conditions	Yield
With calcium chloride; iron In neat (no solvent) at 570°C, 3h;;	82%
With CaCl2; iron In neat (no solvent) at 570°C, 3h;;	82%
With calcium chloride In neat (no solvent) at 570°C, 30h;;	21.3%

: graphite

: calcium nitride

A: calcium cyanide

B: 156-62-7
calcium cyanamide

Conditions

Conditions	Yield
In neat (no solvent) 3 h heating of Ca3N2 and graphite at 1180°C; quenching;;	A 6.5% B 68%
In neat (no solvent) equil.; 3 h heating at 1180°C; quenching with cold water;;	A 6.5% B 68%
In neat (no solvent) 3 h heating of Ca3N2 and graphite at 1180°C; quenching;;	A 6.5% B 68%
In neat (no solvent) equil.; 5 h heating at 1060°C; quenching with cold water;;	A 6.7% B 58%

...Expand

: calcium cyanate

: 156-62-7
calcium cyanamide

Conditions

Conditions	Yield
In neat (no solvent) byproducts: CO2; 15 h heating at 410°C in vac.;;	23.7%
In neat (no solvent) byproducts: CO2; 15 h heating at 375-380°C;;	8.5%

: 7727-37-9
nitrogen

: 75-20-7
calcium carbide

A: 156-62-7
calcium cyanamide

B: 7440-44-0
pyrographite

Conditions

Conditions	Yield
In neat (no solvent) at 1200°C; equilibrium depends on temp.; divariante equilibrium with N2 and C phases and soln. of CaC2 in CaCN2 or CaO;;	A 21% B n/a
In neat (no solvent) conducting process in presence of CaF2; kiln described;;
In neat (no solvent) Frank Caro apparatus described;;

...Expand

: 460-19-5
ethanedinitrile

CaO: CaO

A: 156-62-7
calcium cyanamide

B CO: CO

Conditions

Conditions	Yield
at 800℃; Waermetoenung;
at 800℃;

...Expand

CaC2: CaC2

: 156-62-7
calcium cyanamide

Conditions

Conditions	Yield
With nitrogen zur technischen Gewinnung;
With nitrogen Einfluss der Koernung des verwendeten Calciumcarbids und der Menge der Katalysatoren (CaF2,CaCl2,Aktivkohle,Thomasschlacke,CaCN2) auf die Geschwindigkeit der Bildung;
With nitrogen zur technischen Gewinnung;

calcium carbamate: calcium carbamate

: 156-62-7
calcium cyanamide

Conditions

Conditions	Yield
With carbon dioxide; ammonia at 600 - 800℃;
With carbon monoxide; ammonia at 600 - 800℃;
With ammonia at 600 - 800℃;

: 124-38-9
carbon dioxide

calcium carbonate: calcium carbonate

: 156-62-7
calcium cyanamide

Conditions

Conditions	Yield
With ammonia at 750℃;
With ammonia at 750℃; Wiederverwendung der Restgase;
With ammonia at 750℃;
With ammonia at 750℃; vorhergehendes teilweises oder vollstaendiges Brennen der Carbonate;

carbon: carbon

: 156-62-7
calcium cyanamide

Conditions

Conditions	Yield
With calcium nitride; nitrogen at 800 - 1100℃;

CO: CO

: 156-62-7
calcium cyanamide

Conditions

Conditions	Yield
With aluminum oxide; nitrogen; ammonia; pyrographite; calcium oxide at 750 - 850℃;
With ammonia; water; calcium oxide

CaCO3: CaCO3

CO: CO

: 156-62-7
calcium cyanamide

Conditions

Conditions	Yield
With aluminum oxide; nitrogen; ammonia; pyrographite at 750 - 850℃;
With ammonia; water

: 7664-41-7
ammonia

: 543-88-4
calcium carbamate

: 156-62-7
calcium cyanamide

Conditions

Conditions	Yield
at 600 - 800℃;

: 124-38-9
carbon dioxide

: 7664-41-7
ammonia

: 543-88-4
calcium carbamate

: 156-62-7
calcium cyanamide

Conditions

Conditions	Yield
at 600 - 800℃;

...Expand

calcium carbide/s: calcium carbide/s

: 156-62-7
calcium cyanamide

Conditions

Conditions	Yield
With nitrogen bei Dunkelrotglut bis Weissglut;
With nitrogen at 1000 - 1100℃;
With nitrogen bei Dunkelrotglut bis Weissglut;

calcium carbide: calcium carbide

: 156-62-7
calcium cyanamide

Conditions

Conditions	Yield
With nitrogen technische Darstellung;
With nitrogen at 1200 - 1300℃; Gleichgewicht;
With nitrogen

: 143-33-9
sodium cyanide

calcium carbide: calcium carbide

: 156-62-7
calcium cyanamide

Conditions

Conditions	Yield
at 900℃;

calcium carbonate: calcium carbonate

: 156-62-7
calcium cyanamide

Conditions

Conditions	Yield
With ammonia
With carbon monoxide; ammonia at 630 - 700℃;

: 74-90-8
hydrogen cyanide

calcium carbonate: calcium carbonate

: 156-62-7
calcium cyanamide

Conditions

Conditions	Yield
at 750 - 850℃;

: 680-31-9
N,N,N,N,N,N-hexamethylphosphoric triamide

: 75-77-4
chloro-trimethyl-silane

: 156-62-7
calcium cyanamide

A: CaCl2*2(N(CH3)2)3PO

B: 1000-70-0
bis(trimethylsilyl)carbodi-imide

Conditions

Conditions	Yield
In N,N,N,N,N,N-hexamethylphosphoric triamide HMPTA added to suspn. of CaCN2 in Me3SiCl (stirring); heated to 60°C; heated gradually (120°C, 3 h); cooled; hexane added; ppt. filtered off; dried (vac., 90°C); liquid phase fractionated; elem.anal.;	A 97% B n/a

...Expand

: 7440-23-5
sodium

: 156-62-7
calcium cyanamide

: 773837-37-9
sodium cyanide

Conditions

Conditions	Yield
With pyrographite In neat (no solvent) heating to 1300°C, fast cooling;;	95.5%
With pyrographite In neat (no solvent) heating to 1300°C, fast cooling;;	95.5%
With pyrographite In neat (no solvent) at 900°C;;	10%

: 7732-18-5
water

: 156-62-7
calcium cyanamide

: 127099-85-8, 780722-26-1
dicyandiamide

Conditions

Conditions	Yield
With aluminum(III) sulfate In water	95%
With Al2(SO4)3 In water	95%
With sulfur dioxide byproducts: calcium sulfite; pptn. of Ca with SO2; evapn.;	90%

: 156-62-7
calcium cyanamide

: 420-04-2
CYANAMID

Conditions

Conditions	Yield
With carbon dioxide 40°C;	92%
With sulfuric acid
With nitric acid

: 680-31-9
N,N,N,N,N,N-hexamethylphosphoric triamide

: 156-62-7
calcium cyanamide

: 1067-10-3
Bromotriethylgermanium

A: CaBr2*2(N(CH3)2)3PO

B: 32673-14-6
bis(triethylgermyl)carbodiimide

Conditions

Conditions	Yield
In xylene heated (1 h, 150°C); cooled; ppt. filtered off; stirred (warm H2O); filtered off; H2O evapd.; dried (vac., 70°C); xylene filtrate fractionated; elem.anal.;	A 90.5% B 77.3%

...Expand

: 7732-18-5
water

: 156-62-7
calcium cyanamide

: 420-04-2
CYANAMID

Conditions

Conditions	Yield
With carbon dioxide In methanol 40°C, 3 h; filtration, evapn. of solvent at 11 Torr;	90%
With carbon dioxide In not given byproducts: CaCO3; leading of CO2, filtration of CaCO3, acidifying with acetic acid to pH=6; evapn. at 40°C and 10-20 Torr, cooling down to ambient temp., after concentration cooling down to 5-10°C, drying in vac.; dissolving in ether, filtration, evapn. of ether or pptn. with benzene, distillation at 85-87°C and 0.5 Torr;
With carbon dioxide byproducts: CaCO3; 30-32°C;

: 680-31-9
N,N,N,N,N,N-hexamethylphosphoric triamide

: 1112-48-7
triethyl-bromo-silane

: 156-62-7
calcium cyanamide

A: CaBr2*2(N(CH3)2)3PO

B: 7414-77-9
bis(triethylsilyl)carbodiimide

Conditions

Conditions	Yield
In xylene heated (150°C, 1 h); cooled to 120°C; liquid decanted; fractionated (vac.); ppt. washed (hexane); dried (vac.); elem.anal.;	A 89.4% B 81.6%

...Expand

: 7440-23-5
sodium

: 156-62-7
calcium cyanamide

: sodium calcium cyanide

Conditions

Conditions	Yield
In neat (no solvent) at 1300 - 1450°C;;	88%
In neat (no solvent) at 1300 - 1450°C;;	88%
In neat (no solvent) at 1300 - 1450°C;;	88%
In neat (no solvent) addn. of metallic Na supplying raw material to CaCN2 on cyanide bath at 1400°C;;
In neat (no solvent) addn. of metallic Na supplying raw material to CaCN2 on cyanide bath at 1400°C;;

: 156-62-7
calcium cyanamide

: 4316-73-8
sodium sarcosinate

: 57-00-1
Creatinine

Conditions

Conditions	Yield
With phosphoric acid; sulfuric acid	86%
phosphoric acid	75%
sulfuric acid

: 156-62-7
calcium cyanamide

: 79-22-1
methyl chloroformate

: 677729-43-0
2',3,4-triaminodiphenyl ether

: methyl 5(6)-(2-aminophenoxy)-2-benzimidazolyl carbamate

Conditions

Conditions	Yield
Stage #1: calcium cyanamide; methyl chloroformate In water at 38 - 41℃; for 1h; Stage #2: 2',3,4-triaminodiphenyl ether In acetic acid; isopropyl alcohol for 6h; Heating;	84%

...Expand

: 6264-66-0
1,2-diamino-4-(4-aminophenoxy)benzene

: 156-62-7
calcium cyanamide

: 79-22-1
methyl chloroformate

: 56073-92-8
methyl (5-(4-aminophenoxy)-1H-benzimidazol-2-yl)carbamate

Conditions

Conditions	Yield
Stage #1: calcium cyanamide; methyl chloroformate In water at 38 - 41℃; for 1h; Stage #2: 1,2-diamino-4-(4-aminophenoxy)benzene In acetic acid; isopropyl alcohol for 6h; Heating;	83%

...Expand

: 156-62-7
calcium cyanamide

: 118-92-3
anthranilic acid

: 79-22-1
methyl chloroformate

: 2-methoxycarbonylaminoquinazol-4-one

Conditions

Conditions	Yield
In water at 85 - 90℃; for 1.5h;	82%

...Expand

: 125159-34-4
3,4,4'-triaminodiphenyl sulfide

: 156-62-7
calcium cyanamide

: 79-22-1
methyl chloroformate

: 56073-96-2
methyl N-[5(6)-(4-aminophenylsulfanyl)benzimidazol-2-yl]carbamate

Conditions

Conditions	Yield
Stage #1: calcium cyanamide; methyl chloroformate In water at 38 - 41℃; for 1h; Stage #2: 3,4,4'-triaminodiphenyl sulfide In water; acetic acid; isopropyl alcohol for 6h; Heating;	82%

...Expand

: 7727-37-9
nitrogen

: 13460-50-9
metaboric acid

: 156-62-7
calcium cyanamide

: 10043-11-5
boron nitride

Conditions

Conditions	Yield
With hydrogen wt ratio = 1:1; at 1400-1750°C, in 93% N2, 7% H2 atmosphere;	82%

...Expand

: 75-15-0
carbon disulfide

: 156-62-7
calcium cyanamide

: 77-78-1
dimethyl sulfate

: 10191-60-3
dimethyl N-cyanodithioiminocarbonate

Conditions

Conditions	Yield
Stage #1: carbon disulfide; calcium cyanamide With sodium carbonate In water at 40 - 45℃; for 5h; Stage #2: dimethyl sulfate at 0 - 20℃; for 2h;	82%

...Expand

: 1112-48-7
triethyl-bromo-silane

: 156-62-7
calcium cyanamide

: 7414-77-9
bis(triethylsilyl)carbodiimide

Conditions

Conditions	Yield
In N,N,N,N,N,N-hexamethylphosphoric triamide; xylene for 1h; Heating;	81.6%

: 75-77-4
chloro-trimethyl-silane

: 156-62-7
calcium cyanamide

: 1000-70-0
bis(trimethylsilyl)carbodi-imide

Conditions

Conditions	Yield
In N,N,N,N,N,N-hexamethylphosphoric triamide for 3h; Heating;	75.7%

: 7732-18-5
water

: 156-62-7
calcium cyanamide

: calcium cyanamide monohydrate

Conditions

Conditions	Yield
In methanol; water H2O-MeOH: fourfold excess; stoichiometric; washed (EtOH); dried (100°C); elem. anal.;	75%
In neat (no solvent) stoichiometric ratio; washed (EtOH); dried (100°C); elem. anal.;

: 156-62-7
calcium cyanamide

: 150-13-0
4-amino-benzoic acid

: 42823-46-1
4-guanidinobenzoic acid hydrochloride

Conditions

Conditions	Yield
With hydrogenchloride In water at 80℃; for 3h; Cooling with ice;	45.8%

: 680-31-9
N,N,N,N,N,N-hexamethylphosphoric triamide

: 1461-22-9
tributyltin chloride

: 156-62-7
calcium cyanamide

A: CaCl2*2(N(CH3)2)3PO

B: 34885-41-1
bis(tributylstannyl)carbodiimide

Conditions

Conditions	Yield
In toluene CaCN2 in HMPTA added to Bu3SnCl; heated to 40°C; toluene added; boiled (3 h); cooled; ppt. filtered; Bu3SnCl removed; benzene added; filtred off; filtrate chromd. (Al2O3); solvent evapd.; elem.anal.;	A n/a B 38.4%

...Expand

: soda lime

: 156-62-7
calcium cyanamide

: 13477-34-4
calcium(II) nitrate

Conditions

Conditions	Yield
With air; copper(II) oxide; copper(II) carbonate; nickel(II) carbonate In neat (no solvent) storage of thin layer of mixt. of lime nitrogen, soda lime and CuO on air for few days; addn. of catalyst, heating in dry stream of air at 400°C, until oxidn. of C is complete; heating up to 3 h at 450°C; acceleration by min. of H2O vapor;;	38%

: 426-67-5
triisopropylsilyl fluoride

: 156-62-7
calcium cyanamide

: 86071-46-7
Bis(triisopropylsilyl)-carbodiimid

Conditions

Conditions	Yield
In N,N,N,N,N,N-hexamethylphosphoric triamide; xylene at 145℃; for 4h;	31.2%

: potassium chloride

: 156-62-7
calcium cyanamide

: 7440-44-0
pyrographite

: potassium cyanide

Conditions

Conditions	Yield
cerium nitride 800-1000°C;	25%
aluminium nitride 800-1000°C;	25%
magnesium nitride 800-1000°C;	25%

...Expand

Calcium cyanamide Chemical Properties

Product Name: Calcium cyanamide (CAS NO.156-62-7)

Molecular Formula: CCaN₂
Molar mass: 80.10 g/mol
EINECS: 205-861-8
Density: 2.29 g/cm³
Flash Point: 42.1 °C
Melting point: 1340 °C
Water solubility: Reacts
Boiling Point: 1150-1200 °C (sublim.)
Appearance: White solid (Often gray or black from impurities)
Solubility: soluble in water, alcohol, acetone
H-Bond Donor: 1
H-Bond Acceptor: 2
Structure Descriptors of Calcium cyanamide (CAS NO.156-62-7):
IUPAC Name: calcium cyanamide
Canonical SMILES: C(#N)N.[Ca+2]
InChI: InChI=1S/CH2N2.Ca/c2-1-3;/h2H2;/q;+2
InChIKey: STRTXDFFNXSZQB-UHFFFAOYSA-N
Product Categories: Pharmaceutical Intermediates; Inorganics

Calcium cyanamide Uses

The main use of Calcium cyanamide (CAS NO.156-62-7) is in agriculture as a fertilizer. In contact with water it decomposes and liberates ammonia:
CaCN₂ + 3 H₂O → 2 NH₃ + CaCO₃
It was used in the preparation of melamine and calcium cyanide.And it can also be used to produce sodium cyanide by fusing with sodium carbonate, which was used in cyanide process in gold mining:
CaCN₂ + Na₂CO₃→ 2 NaCN + CaO + O₂

Calcium cyanamide Production

Calcium cyanamide (CAS NO.156-62-7) is formed when calcium carbide reacts with nitrogen.
CaC₂ + N₂→ CaCN₂+ C
The reaction takes place in large steel chambers. An electric carbon element heats the reactants to red heat. Nitrogen is pressurised at 2 atmospheres.

Calcium cyanamide Toxicity Data With Reference

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Source
human	LDLo	oral	571mg/kg (571mg/kg)	"Toxicology of Drugs and Chemicals," Deichmann, W.B., New York, Academic Press, Inc., 1969Vol. -, Pg. 149, 1969.
mouse	LD50	intraperitoneal	100mg/kg (100mg/kg)	National Technical Information Service. Vol. AD277-689,
mouse	LD50	intravenous	282mg/kg (282mg/kg)	Drugs in Japan Vol. 6, Pg. 304, 1982.
mouse	LD50	oral	334mg/kg (334mg/kg)	Drugs in Japan Vol. 6, Pg. 304, 1982.
rabbit	LD50	oral	1400mg/kg (1400mg/kg)	Pesticide Chemicals Official Compendium, Association of the American Pesticide Control Officials, Inc., 1966. Vol. -, Pg. 174, 1966.
rabbit	LD50	skin	590mg/kg (590mg/kg)	"Kirk-Othmer Encyclopedia of Chemical Technology," 3rd ed., Grayson, M., and D. Eckroth, eds. New York, John Wiley & Sons, Inc., 1978Vol. 7, Pg. 291, 1979.
rat	LC50	inhalation	> 150mg/m3/4H (150mg/m3)	"Agrochemicals Handbook," with updates, Hartley, D., and H. Kidd, eds., Nottingham, Royal Soc of Chemistry, 1983-86Vol. A053, Pg. 1984,
rat	LD50	intravenous	125mg/kg (125mg/kg)	Drugs in Japan Vol. 6, Pg. 304, 1982.
rat	LD50	oral	158mg/kg (158mg/kg)	Drugs in Japan Vol. 6, Pg. 304, 1982.
rat	LD50	unreported	1gm/kg (1000mg/kg)	Guide to the Chemicals Used in Crop Protection. Vol. 6, Pg. 73, 1973.

Calcium cyanamide Consensus Reports

NCI Carcinogenesis Bioassay (feed); No Evidence: mouse, rat NCITR* National Cancer Institute Carcinogenesis Technical Report Series. (Bethesda, MD 20014) No. NCI-CG-TR-163 ,1979. . Community Right-To-Know List. Reported in EPA TSCA Inventory.

Calcium cyanamide Safety Profile

Poison by ingestion, inhalation, skin contact, intravenous, and intraperitoneal routes. Moderately toxic to humans by ingestion. Questionable carcinogen with experimental tumorigenic data. Mutation data reported. The fatal dose, by ingestion, is probably around 20 to 30 g for an adult. It does not have a cyanide effect. Calcium cyanamide is not believed to have a cumulative action. Flammable. Reaction with water forms the explosive acetylene gas. When heated to decomposition it emits toxic fumes of NO_x and CN⁻. See also CALCIUM COMPOUNDS, AMIDES, and CYANIDE.
Safety Information of Calcium cyanamide (CAS NO.156-62-7):
Hazard Note: Harmful Irritant
Hazard Codes: Xn Harmful
Risk Statements:
22: Harmful if swallowed
37: Irritating to the respiratory system
41: Risk of serious damage to eyes
Safety Statements:
22: Do not breathe dust
26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
36: Wear suitable protective clothing
37: Wear suitable gloves
39: Wear eye/face protection

Calcium cyanamide Standards and Recommendations

OSHA PEL: TWA 0.5 mg/m³
ACGIH TLV: TWA 0.5 mg/m³; Not Classifiable as a Human Carcinogen
DFG MAK: 1 mg/m³
DOT Classification: 4.3; Label: Dangerous When Wet

Calcium cyanamide Specification

Calcium cyanamide (CAS NO.156-62-7) also can be called Cyanamide calcium salt , UN 1403 , Lime Nitrogen , Nitrolime .It is a calcium compound used as fertiliser, first synthesized in 1898 by Adolph Frank and Nikodem Caro.It is commercially known as Nitrolim.It crystalizes in hexagonal crystal system with space group R3m and lattice constants a = 3.67, c = 14.85 (.10-1 nm).

Product Name

Calcium cyanamide

Synthetic route

Calcium cyanamide Chemical Properties

Calcium cyanamide Uses

Calcium cyanamide Production

Calcium cyanamide Toxicity Data With Reference

Calcium cyanamide Consensus Reports

Calcium cyanamide Safety Profile

Calcium cyanamide Standards and Recommendations

Calcium cyanamide Specification

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