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21039

Sigma-Aldrich

Calcium carbide

granulated, technical, ≥75% (gas-volumetric)

Synonyme(s) :

Calcium acetylide, Calcium dicarbide

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About This Item

Formule linéaire :
CaC2
Numéro CAS:
75-20-7
Poids moléculaire :
64.10
Numéro Beilstein :
3909011
Numéro CE :
200-848-3
Numéro MDL:
MFCD00010905
Code UNSPSC :
12352300
ID de substance PubChem :
57647894
Nomenclature NACRES :
NA.23

Qualité

technical
granulated

Pureté

≥75% (gas-volumetric)

Forme

pieces

Taille des particules

0.1-1 mm

Densité

2.22 g/mL at 25 °C (lit.)

Chaîne SMILES 

[Ca++].[C-]#[C-]

InChI

1S/C2.Ca/c1-2;/q-2;+2

Clé InChI

UIXRSLJINYRGFQ-UHFFFAOYSA-N

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Description générale

Calcium carbide (CaC2), also referred to as calcium acetylide, is an ionic compound. Technical grade CaC2 is a grey solid with a granular form. The material is reactive with water and forms acetylene gas and calcium hydroxide. Our technical grade material consists of ≥75% CaC2 with the remainder of the composition being calcium oxide, phosphides, sulfides, and nitrides. CaC2 is extensively utilized in the production of acetylene and calcium cyanamide. Additionally, it has been explored in producing phase change materials and as a shape-stabilized phase change material for the efficient utilization of solar energy. Furthermore, it is being investigated as an electrode material for rechargeable calcium batteries.

Application

  • NUCLEOPHILIC ADDITION OF PHOSPHINOXIDES AND ALCOHOLS TO ACETYLENE GENERATED in situ FROM CALCIUM CARBIDE: This study discusses the reactivity of acetylene generated from calcium carbide for various organic synthesis applications (Aleksandrovna, 2024).
  • Construction of 3-Methyl-2-Substituted Benzofurans and 3-Methyl-2-Substituted Benzothiophenes Using Solid Calcium Carbide as a Substitute for Gaseous …: Describes a synthetic method using solid calcium carbide in organic synthesis, highlighting its practicality and environmental benefits (Wang et al., 2024).

Pictogrammes

FlameCorrosionExclamation mark
GHS02,GHS05,GHS07

Mention d'avertissement

Danger

Mentions de danger

H260,H315,H318,H335

Classification des risques

Eye Dam. 1 - Skin Irrit. 2 - STOT SE 3 - Water-react 1

Organes cibles

Respiratory system

Code de la classe de stockage

4.3 - Hazardous materials which set free flammable gases upon contact with water

Classe de danger pour l'eau (WGK)

WGK 1

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

Eyeshields, Gloves, type P3 (EN 143) respirator cartridges

Certificats d'analyse (COA)

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Mirian Elizabeth Casco et al.
Nanoscale, 11(11), 4712-4718 (2019-03-07)
We report the one-pot mechanochemical synthesis of N-doped porous carbons at room temperature using a planetary ball mill. The fast reaction (5 minutes) between calcium carbide and cyanuric chloride proceeds in absence of any solvent and displays a facile bottom-up
Yingjie Li et al.
Journal of environmental sciences (China), 68, 169-176 (2018-06-18)
For the first time, a series of alkynyl carbon materials (ACMs) were prepared via the mechanochemical reaction of CaC2 with six polyhalogenated precursors, namely CCl4, C2Cl6, C2Cl4, C6Cl6, C6Br6, and C14H4Br10 (ACM-1, ACM-2, ACM-3, ACM-4, ACM-5, and ACM-6, respectively) and
Palanisamy Ramasamy et al.
Waste management & research : the journal of the International Solid Wastes and Public Cleansing Association, ISWA, 20(6), 536-540 (2003-01-29)
Carbide sludge (10.4-11.5 tonnes day(-1)) is generated from the reaction of calcium carbide (900 kg) and water (6,000 L) in the production of acetylene (2,400 m3), in three selected acetylene manufacturing plants. The sludge (of pH 12.2 and containing Cu
B K Van Kreel et al.
Journal of mass spectrometry : JMS, 31(1), 108-111 (1996-01-01)
A rapid and inexpensive method was developed to determine deuterium enrichment in body fluids. This is achieved by converting water into acetylene. To vacutainer tubes a small amount of calcium carbide is added. The tubes are evacuated and 25 microliters
Zhong-yuan Lu et al.
Huan jing ke xue= Huanjing kexue, 27(4), 775-778 (2006-06-14)
To recycle calcium carbide residue effectively, calcium carbide of different crystal form, including global aragonite, calcite and acicular calcium carbide was synthesized. Both the influence of pretreatment in the purity of calcium carbide, and the influence of temperatures of carbonization
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