21039
Calcium carbide
granulated, technical, ≥75% (gas-volumetric)
Synonym(s):
Calcium acetylide, Calcium dicarbide
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About This Item
Linear Formula:
CaC2
CAS Number:
Molecular Weight:
64.10
UNSPSC Code:
12352300
NACRES:
NA.23
PubChem Substance ID:
EC Number:
200-848-3
Beilstein/REAXYS Number:
3909011
MDL number:
grade
technical
Quality Segment
assay
≥75% (gas-volumetric)
form
pieces
quality
granulated
composition
CaC₂
reaction suitability
core: calcium
particle size
0.1-1 mm
density
2.22 g/mL at 25 °C (lit.)
SMILES string
[Ca++].[C-]#[C-]
InChI
1S/C2.Ca/c1-2;/q-2;+2
InChI key
UIXRSLJINYRGFQ-UHFFFAOYSA-N
General description
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).
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signalword
Danger
hcodes
target_organs
Respiratory system
Storage Class
4.3 - Hazardous materials which set free flammable gases upon contact with water
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type P3 (EN 143) respirator cartridges
Hazard Classifications
Eye Dam. 1 - Skin Irrit. 2 - STOT SE 3 - Water-react. 1
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