Calcium carbide supplier

Name
Calcium carbide
EINECS 200-848-3
CAS No. 75-20-7
Article Data299
CAS DataBase
Density 2.22 g/cm³
Solubility hydrolysis in water
Melting Point 447 °C
Formula CaC₂
Boiling Point 2300 °C
Molecular Weight 64.1
Flash Point
Transport Information UN 1402 4.3/PG 2
Appearance grey or black solid with a garlic-like odour
Safety 8-43-43A
Risk Codes 15
Molecular Structure
Hazard Symbols F
Synonyms Acetylenogen;Calcium acetylide;Calcium acetylide (Ca(C2));Calciumcarbide (Ca(C2));Calciumdicarbide;Ethyne, calcium deriv.;
PSA 0.00000
LogP 0.16260

Synthetic route

: calcium oxide

: 75-20-7
calcium carbide

Conditions

Conditions	Yield
With biochars (apricot shell, willow or pine wood etc.) In neat (no solvent) Kinetics; reaction at 1650-1750 °C; detd. by XRD;	97%
With sugar coal In neat (no solvent) heating CaO with sugar coal (1:3) at 1700°C, pressure about 100 Torr, during less 1 hour;; about 97% CaC2;;
With pyrographite In neat (no solvent) Electric Arc; from mixture of CaO and char coal powder; carbon electrodes, 12-14 A, 10-15 min; special app. described;;

: 7789-78-8
calcium hydride

: 7439-93-2
lithium

: 7440-44-0
pyrographite

A: 2Ca(2+)*Li(1+)*C3(4-)*H(1-)=Ca2LiC3H

B: 75-20-7
calcium carbide

Conditions

Conditions	Yield
In further solvent(s) acetylene carbon black reacted with CaCH2 in Ca/Li flux; sealed ampules heated to 1323 K in 2 h and kept at this temp. for 2 h; cooled to 1073 K in 24 h, cooled to 773 K in 108 h, centrifuged; elem. anal.;	A 70% B n/a

...Expand

: calcium chloride

: 75-20-7
calcium carbide

Conditions

Conditions	Yield
With sodium In neat (no solvent) mixture of CaCl2, retort carbon and metallic Na in Fe crucible; 0.5 h at light red heat;;	50%
With retort carbon; Na In neat (no solvent) mixture of CaCl2, retort carbon and metallic Na in Fe crucible; 0.5 h at light red heat;;	50%

: 156-62-7
calcium cyanamide

: 75-20-7
calcium carbide

Conditions

Conditions	Yield
With calcium sulfate at 1130 - 1250℃; im Vakuum; isomer(ic) II;
at 1100 - 1150℃; isomer(ic) III;
at 1130℃; zuletzt bei 1250-1300grad; isomer(ic) IV;

CaCN2: CaCN2

: 75-20-7
calcium carbide

Conditions

Conditions	Yield
isomer(ic) IV;

carbon: carbon

: 75-20-7
calcium carbide

Conditions

Conditions	Yield
With hydrogen; calcium at 1150 - 1250℃;
With argon; calcium at 1150 - 1250℃;

carbon: carbon

CaO: CaO

: 75-20-7
calcium carbide

Conditions

Conditions	Yield
isomer(ic) II;

sugar-coal: sugar-coal

calcium: calcium

: 75-20-7
calcium carbide

Conditions

Conditions	Yield
With nitrogen at 1050 - 1300℃; isomer(ic) II;
at 1050 - 1300℃; isomer(ic) III;

sugar-coal: sugar-coal

CaO: CaO

: 75-20-7
calcium carbide

Conditions

Conditions	Yield
With calcium sulfate at 1700℃; im Hochvakuum; isomer(ic) II;
at 1700℃; im Hochvakuum, dann in Stickstoff-Atmosphaere unter 30-120 mm bei 1250grad; isomer(ic) III;
at 1700℃; im Hochvakuum; isomer(ic) IV;
im elektrischen Ofen; isomer(ic) IV;

: silicon carbide

: calcium oxide

: 75-20-7
calcium carbide

Conditions

Conditions	Yield
In neat (no solvent) byproducts: Ca-silicide; at 1690-1740°C;;
In neat (no solvent) byproducts: Ca-silicide; at 1690-1740°C;;
In neat (no solvent)

: 1299-86-1
aluminium carbide

: 7440-70-2
calcium

A: 75-20-7
calcium carbide

B: 7429-90-5
aluminium

Conditions

Conditions	Yield
at >845°C;
at >845°C;

...Expand

: 7440-70-2
calcium

A: 75-20-7
calcium carbide

B: calcium oxide

Conditions

Conditions	Yield
With carbon dioxide
With CO2 by fast heating;
With CO2

: 7440-70-2
calcium

A: 75-20-7
calcium carbide

B: 7440-44-0
pyrographite

C: calcium oxide

Conditions

Conditions	Yield
With CO2 by slow heating;

...Expand

: 7440-70-2
calcium

A: 75-20-7
calcium carbide

B: calcium chloride

Conditions

Conditions	Yield
With tetrachloromethane burning in the presence of silica gel with excess of Ca after ignition with a mixture of CaSi2+KNO3;
With CCl4 burning in the presence of silica gel with excess of Ca after ignition with a mixture of CaSi2+KNO3;

: 7440-70-2
calcium

: 75-20-7
calcium carbide

Conditions

Conditions	Yield
With soot at red heat;
In neat (no solvent) liquid, heated Ca was treated with organic compounds;;
With char coal In neat (no solvent) burning heated pieces of Ca on char coal;;

: 7440-70-2
calcium

A: 75-20-7
calcium carbide

B: 7440-44-0
pyrographite

Conditions

Conditions	Yield
With CO at read heat;
With methane over dark red heat;

: calcium benzylate

: 7440-70-2
calcium

A: 7789-78-8
calcium hydride

B: 75-20-7
calcium carbide

Conditions

Conditions	Yield
at dark red heat;

...Expand

: 333-20-0
potassium thioacyanate

: 7440-70-2
calcium

A: calcium(II) sulfide

B: calcium nitride

C: 75-20-7
calcium carbide

D: 7440-44-0
pyrographite

Conditions

Conditions	Yield
at 300-400°C and 25 Torr with 50% conversion of Ca;
at 300-400°C and 25 Torr with 50% conversion of Ca;

...Expand

: 74-85-1
ethene

: 7440-70-2
calcium

A: 75-20-7
calcium carbide

B: 7440-44-0
pyrographite

Conditions

Conditions	Yield
over dark red heat;

...Expand

: 118-74-1
hexachlorobenzene

: 7440-70-2
calcium

A: 75-20-7
calcium carbide

B: calcium chloride

Conditions

Conditions	Yield
explosion after ignition with Mg;
explosion after ignition with Mg;

...Expand

: 7440-70-2
calcium

: 7440-44-0
pyrographite

: 75-20-7
calcium carbide

Conditions

Conditions	Yield
over red heat;
In neat (no solvent) 1.5 h heating in closed Fe crucible at 1150-1200°C;; 94% CaC2, 2% free carbon, small amts. of CaO and up to 2% impurities;;
In neat (no solvent) C (calcinated soot or calcinated, powdered petroleum coke); Fe crucible in resistance furnace under Ar: 825 Torr, 10-30 min, 1250°C and 3-6 Torr, 15 min, 1150°C; keep under N2 and P2O5 in desiccator;; melting at 2200°C, 750 Torr under Ar; product contains 90-93% CaC2, 2-4% graphite, up to 3% CaO and about 2% Fe and Al;;

: calcium carbonate

: 75-20-7
calcium carbide

Conditions

Conditions	Yield
With hydrogen In neat (no solvent) use of carbon and CaO from lime through reduction with H2;;
With aluminium In neat (no solvent) Electric Arc; under exclusion of air;;
With Sucrose In neat (no solvent) calcination;;

: 7440-44-0
pyrographite

: calcium carbonate

: 75-20-7
calcium carbide

Conditions

Conditions	Yield
In neat (no solvent) byproducts: CaO, CO, CO2; Electric Arc; under heating, molar ratio carbonate:carbon=1:0.3, under Ar;
In neat (no solvent) description of dust control;;
With aluminum oxide In neat (no solvent) byproducts: Al; conducting the process; modification of pederson process: CaC2 as intermediate;;

: 74-85-1
ethene

: 7440-70-2
calcium

A: 7789-78-8
calcium hydride

B: 75-20-7
calcium carbide

C: 7440-44-0
pyrographite

Conditions

Conditions	Yield
In neat (no solvent) dark red heat; crust of CaC2, C and CaH2 inhibit reaction;;
In neat (no solvent) dark red heat; crust of CaC2, C and CaH2 inhibit reaction;;

...Expand

: calcium arsenide

: 7440-44-0
pyrographite

: 75-20-7
calcium carbide

Conditions

Conditions	Yield
In neat (no solvent) at very high temp.;;

: calcium(II) sulfide

: 7440-44-0
pyrographite

: 75-20-7
calcium carbide

Conditions

Conditions	Yield
In neat (no solvent) carbon forms in an electric furnace CaC2;;

: diamond

: calcium oxide

A: 201230-82-2
carbon monoxide

B: 75-20-7
calcium carbide

Conditions

Conditions	Yield
In neat (no solvent) enthalpy of reaction given;;

...Expand

: 34557-54-5
methane

: calcium oxide

: 75-20-7
calcium carbide

Conditions

Conditions	Yield
In neat (no solvent) heating with methane;;

: 7440-44-0
pyrographite

: calcium oxide

: 75-20-7
calcium carbide

Conditions

Conditions	Yield
In neat (no solvent) in electrical furnace at 500 - 1500°C;;
With carbon dioxide; carbon monoxide; nitrogen In neat (no solvent) byproducts: NO; reaction with CO2 from lime;;
With silica gel; iron In neat (no solvent) byproducts: FeSi;

: 75-20-7
calcium carbide

: 74-86-2
acetylene

Conditions

Conditions	Yield
With water Hydrolysis;	100%
With water In water decompn.;;
With hydrogen In neat (no solvent) byproducts: Ca; at 2275°C pressure of H2 1 atm;;

: 24962-55-8
4-hydroxybenzaldehyde 4-methylbenzenesulfonate ester

: 75-20-7
calcium carbide

: 1338725-51-1
4,4'-(ethyne-1,2-diyl)bis(4,1-phenylene) bis(4-methylbenzenesulfonate)

Conditions

Conditions	Yield
With copper(l) iodide; palladium diacetate; triethylamine; triphenylphosphine In acetonitrile at 20℃; Sonogashira coupling; Inert atmosphere;	99.4%

: 3437-95-4
2-Iodothiophene

: 75-20-7
calcium carbide

: 23975-15-7
1,2-di(thiophen-2-yl)ethyne

Conditions

Conditions	Yield
With copper(l) iodide; palladium diacetate; triethylamine; triphenylphosphine In acetonitrile at 20℃; Sonogashira coupling; Inert atmosphere;	99%
With copper(l) iodide; palladium diacetate; triethylamine; triphenylphosphine In acetonitrile at 20℃; Inert atmosphere;

: 13329-40-3
4-Iodoacetophenone

: 75-20-7
calcium carbide

: 29619-42-9
1,1'-[ethyne-1,2-diylbis(4,1-phenylene)]diethanone

Conditions

Conditions	Yield
With copper(l) iodide; palladium diacetate; triethylamine; triphenylphosphine In acetonitrile at 20℃; Sonogashira coupling; Inert atmosphere;	99%

: 625-95-6
3-Iodotoluene

: 75-20-7
calcium carbide

: 2765-16-4
bis(3-methylphenyl)acetylene

Conditions

Conditions	Yield
With copper(l) iodide; palladium diacetate; triethylamine; triphenylphosphine In acetonitrile at 20℃; Sonogashira coupling; Inert atmosphere;	99%
With copper(l) iodide; tetrakis(triphenylphosphine) palladium(0); water; triethylamine In N,N-dimethyl-formamide at 60℃; for 24h;

: 624-31-7
4-tolyl iodide

: 75-20-7
calcium carbide

: 2789-88-0
1,2-bis(4-methylphenyl)acetylene

Conditions

Conditions	Yield
With copper(l) iodide; palladium diacetate; triethylamine; triphenylphosphine In acetonitrile at 20℃; Sonogashira coupling; Inert atmosphere;	99%
With copper(l) iodide; tetrakis(triphenylphosphine) palladium(0); water; triethylamine In tetrahydrofuran at 55℃; for 20h; Sonogashira Cross-Coupling;	95%
With copper(l) iodide; tetrakis(triphenylphosphine) palladium(0); water; triethylamine In N,N-dimethyl-formamide at 60℃; for 24h;
With copper(l) iodide; palladium diacetate; triethylamine; triphenylphosphine In acetonitrile at 20℃; Inert atmosphere;

: 91912-54-8
1-iodo-4-(methoxymethyl)benzene

: 75-20-7
calcium carbide

: 1,2-bis(4-(methoxymethyl)phenyl)ethyne

Conditions

Conditions	Yield
With copper(l) iodide; palladium diacetate; triethylamine; triphenylphosphine In acetonitrile at 20℃; Sonogashira coupling; Inert atmosphere;	99%

: 75-20-7
calcium carbide

: 25939-09-7
N-2-methylphenyl-3-phenylcarbohydrazonoyl chloride

: 3-phenyl-1-(2-methylphenyl)-1H-pyrazole

Conditions

Conditions	Yield
With triethylamine In chloroform; water at 20℃; for 48h; Sealed tube;	99%

: N-(3-tolyl)benzohydrazonoyl chloride

: 75-20-7
calcium carbide

: 3-phenyl-1-(3-tolyl)-1H-pyrazole

Conditions

Conditions	Yield
With triethylamine In chloroform; water at 20℃; for 48h; Sealed tube;	99%

: 4-(tert-butyl)-N-phenylbenzohydrazonoyl chloride

: 75-20-7
calcium carbide

: 1609032-02-1
3-(4-(tert-butyl)phenyl)-1-phenyl-1H-pyrazole

Conditions

Conditions	Yield
With triethylamine In chloroform; water at 20℃; for 48h; Solvent; Sealed tube;	99%

: 4-(tert-butyl)-N-phenylbenzohydrazonoyl chloride

: 75-20-7
calcium carbide

: 4,5-dideutero-3-(4-(tert-butyl)phenyl)-1-phenyl-1H-pyrazole

Conditions

Conditions	Yield
With triethylamine In chloroform-d1; water-d2 at 20℃; for 48h; Sealed tube;	99%

: 3,4-dimethyl-N-phenylbenzohydrazonoyl chloride

: 75-20-7
calcium carbide

: 3-(3,4-dimethylphenyl)-1-phenyl-1H-pyrazole

Conditions

Conditions	Yield
With triethylamine In chloroform; water at 20℃; for 48h; Sealed tube;	99%

: 75-20-7
calcium carbide

: 25939-20-2
3,5-dimethyl-N-phenylbenzohydrazonoyl chloride

: 3-(3,5-dimethylphenyl)-1-phenyl-1H-pyrazole

Conditions

Conditions	Yield
With triethylamine In chloroform; water at 20℃; for 48h; Sealed tube;	99%

: 75-20-7
calcium carbide

: 40277-63-2
4-methoxy-N'-phenylbenzohydrazonoyl chloride

: 33064-21-0
3-(4-methoxy-phenyl)-1-phenyl-1H-pyrazole

Conditions

Conditions	Yield
With triethylamine In chloroform; water at 20℃; for 48h; Sealed tube;	99%

: 75-20-7
calcium carbide

: 40277-63-2
4-methoxy-N'-phenylbenzohydrazonoyl chloride

: 4,5-dideutero-3-(4-methoxyphenyl)-1-phenyl-1H-pyrazole

Conditions

Conditions	Yield
With triethylamine In chloroform-d1; water-d2 at 20℃; for 48h; Sealed tube;	99%

: 75-20-7
calcium carbide

: 25939-01-9
p-toluoyl chloride phenylhydrazone

: 33064-20-9
3-(4-methylphenyl)-1-phenyl-1H-pyrazole

Conditions

Conditions	Yield
With triethylamine In chloroform; water at 20℃; for 48h; Sealed tube;	99%

: 75-20-7
calcium carbide

: 25939-10-0
3-methyl-N'-phenylbenzohydrazonoyl chloride

: 895138-61-1
1-phenyl-3-(3-tolyl)-1H-pyrazole

Conditions

Conditions	Yield
With triethylamine In chloroform; water at 20℃; for 48h; Sealed tube;	99%

: 75-20-7
calcium carbide

: 25939-10-0
3-methyl-N'-phenylbenzohydrazonoyl chloride

: 4,5-dideutero-1-phenyl-3-(3-tolyl)-1H-pyrazole

Conditions

Conditions	Yield
With triethylamine In chloroform-d1; water-d2 at 20℃; for 48h; Sealed tube;	99%

: 75-20-7
calcium carbide

: 15424-14-3
N-phenylbenzohydrazonoyl chloride

: 4492-01-7
1,3-diphenyl-1H-pyrazole

Conditions

Conditions	Yield
With triethylamine In chloroform; water at 20℃; for 48h; Sealed tube;	99%

: 75-20-7
calcium carbide

: 15424-14-3
N-phenylbenzohydrazonoyl chloride

: 4,5-dideutero-1,3-diphenyl-1H-pyrazole

Conditions

Conditions	Yield
With triethylamine In chloroform-d1; water-d2 at 20℃; for 48h; Sealed tube;	99%

: 75-20-7
calcium carbide

: 25939-12-2
4-bromo-N-phenylbenzohydrazonoyl chloride

: 33064-18-5
3-(4-bromophenyl)-1-phenyl-1H-pyrazole

Conditions

Conditions	Yield
With triethylamine In chloroform; water at 20℃; for 48h; Sealed tube;	99%

: 75-20-7
calcium carbide

: 25939-12-2
4-bromo-N-phenylbenzohydrazonoyl chloride

: 3-(4-bromophenyl)-4,5-dideutero-1-phenyl-1H-pyrazole

Conditions

Conditions	Yield
With triethylamine In chloroform-d1; water-d2 at 20℃; for 48h; Sealed tube;	99%

: 75-20-7
calcium carbide

: 36590-52-0
N-phenyl-p-chlorobenzohydrazonoyl chloride

: 33064-19-6
3-(4-chlorophenyl)-1-phenyl-1H-pyrazole

Conditions

Conditions	Yield
With triethylamine In chloroform; water at 20℃; for 48h; Sealed tube;	99%

: 75-20-7
calcium carbide

: 41626-19-1
chloro(phenyl)methanone p-bromophenylhydrazone

: 1-(4-bromophenyl)-3-phenyl-1H-pyrazole

Conditions

Conditions	Yield
With triethylamine In chloroform; water at 20℃; for 48h; Sealed tube;	99%

: 75-20-7
calcium carbide

: 41626-19-1
chloro(phenyl)methanone p-bromophenylhydrazone

: 1-(4-bromophenyl)-4,5-dideutero-3-phenyl-1H-pyrazole

Conditions

Conditions	Yield
With triethylamine In chloroform-d1; water-d2 at 20℃; for 48h; Sealed tube;	99%

: 75-20-7
calcium carbide

: 25938-99-2
3,4-dichloro-N-phenylbenzohydrazonoyl chloride

: 3-(3,4-dichlorophenyl)-1-phenyl-1H-pyrazole

Conditions

Conditions	Yield
With triethylamine In chloroform; water at 20℃; for 48h; Sealed tube;	99%

: 75-20-7
calcium carbide

: 17359-82-9
N-(α-chlorobenzylidene)-N'-p-chlorophenylhydrazine

: 63637-57-0
1-(4-chlorophenyl)-3-phenyl-1H-pyrazole

Conditions

Conditions	Yield
With triethylamine In chloroform; water at 20℃; for 48h; Sealed tube;	99%

: 69660-02-2
N-phenyl-2-fluorobenzenecarbohydrazonoyl chloride

: 75-20-7
calcium carbide

: 3-(2-fluorophenyl)-1-phenyl-1H-pyrazole

Conditions

Conditions	Yield
With triethylamine In chloroform; water at 20℃; for 48h; Sealed tube;	99%

: 69660-02-2
N-phenyl-2-fluorobenzenecarbohydrazonoyl chloride

: 75-20-7
calcium carbide

: 4,5-dideutero-3-(2-fluorophenyl)-1-phenyl-1H-pyrazole

Conditions

Conditions	Yield
With triethylamine In chloroform-d1; water-d2 at 20℃; for 48h; Sealed tube;	99%

: 2-(4-isobutylphenyl)-N-phenylpropanehydrazonoyl chloride

: 75-20-7
calcium carbide

: 3-(1-(4-isobutylphenyl)ethyl)-1-phenyl-1H-pyrazole

Conditions

Conditions	Yield
With triethylamine In chloroform; water at 20℃; for 48h; Sealed tube;	99%

Calcium carbide Specification

The systematic name of Calcium carbide is calcium ethynediide. With the CAS registry number 75-20-7, it is also named as Acetylenogen. The product's categories are Inorganics; Carbides; Ceramics; Metal and Ceramic Science, and the other registry numbers are 12192-35-7; 195068-68-9; 261780-86-3; 761337-30-8. Besides, it is grey or black solid with a garlic-like odour, which should be sealed in dry, cool, ventilated warehouse. It is incompatible with moisture, water, strong oxidizing agents, alcohols, hydrogen chloride, magnesium. And it reacts violently with water with liberating highly flammable gas, so please keep container dry. In addition, its molecular formula is CaC₂ and molecular weight is 64.10.

The other characteristics of this product can be summarized as: (1)EINECS: 200-848-3; (2)ACD/LogP: 0.37; (3)# of Rule of 5 Violations: 0; (4)ACD/LogD (pH 5.5): 0.37; (5)ACD/LogD (pH 7.4): 0.37; (6)ACD/BCF (pH 5.5): 1.13; (7)ACD/BCF (pH 7.4): 1.13; (8)ACD/KOC (pH 5.5): 37.87; (9)ACD/KOC (pH 7.4): 37.87; (10)#H bond acceptors: 0; (11)#H bond donors: 0; (12)#Freely Rotating Bonds: 0; (13)Density: 2.22 g/cm³; (14)Melting point: 447 °C; (15)Boiling point: 2300 °C; (16)Enthalpy of Vaporization: 21.12 kJ/mol; (17)Vapour Pressure: 69700 mmHg at 25 °C.

Preparation of Calcium carbide: this chemical produced industrially in an electric arc furnace from a mixture of lime and coke at approximately 2000 °C:
CaO + 3 C → CaC₂ + CO

Uses of Calcium carbide: this chemical is used in the desulfurisation of iron. It can also be used in steelmaking as a fuel to extend the scrap ratio to liquid iron, and as a powerful deoxidizer at ladle treatment facilities. Moreover, it is used in carbide lamps. It is also used in the ripening of fruit as source of acetylene gas. Additionally, it can be used in toy cannons. The product can be used in floating, self-igniting naval signal flares together with calcium phosphide. Furthermore, it is used in the industrial manufacture of Acetylene:
CaC₂ + 2 H₂O → C₂H₂ + Ca(OH)₂
Similarly, it can used to produce Calcium cyanamide which is used as fertilizer:
CaC₂ + N₂ → CaCN₂+ C

People can use the following data to convert to the molecule structure.
(1)SMILES: [Ca+2].[C-]#[C-]
(2)InChI: InChI=1/C2.Ca/c1-2;/q-2;+2
(3)InChIKey: UIXRSLJINYRGFQ-UHFFFAOYAI

Product Name

Calcium carbide

Synthetic route

Calcium carbide Specification

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