Aluminium carbide

Aluminium carbide
Unit cell ball and stick model of aluminium carbide
Names
Preferred IUPAC name
Aluminium carbide
Other names
Tetraaluminium tricarbide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.013.706 Edit this at Wikidata
EC Number
  • 215-076-2
MeSH Aluminum+carbide
UN number 1394
  • InChI=1S/3C.4Al/q3*-4;4*+3 checkY
    Key: TWHBEKGYWPPYQL-UHFFFAOYSA-N checkY
  • InChI=1/3C.4Al/q3*-4;4*+3
    Key: TWHBEKGYWPPYQL-UHFFFAOYAR
  • [Al+3].[Al+3].[Al+3].[Al+3].[C-4].[C-4].[C-4]
Properties
Al4C3
Molar mass 143.95853 g/mol
Appearance colorless (when pure) hexagonal crystals[1]
Odor odorless
Density 2.36 g/cm3[1]
Melting point 2,100 °C (3,810 °F; 2,370 K)
Boiling point decomposes at 1400 °C[2]
reacts to make natural gas
Structure
Rhombohedral, hR21, space group[2]
R3m（No. 166）
a = 0.3335 nm, b = 0.3335 nm, c = 0.85422 nm
α = 78.743°, β = 78.743°, γ = 60°
Thermochemistry
116.8 J/mol K
88.95 J/mol K
-209 kJ/mol
-196 kJ/mol
Hazards
GHS labelling:
GHS02: FlammableGHS07: Exclamation mark
Warning
H261, H315, H319, H335
P231+P232, P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P370+P378, P402+P404, P403+P233, P405, P501
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformFlammability 2: Must be moderately heated or exposed to relatively high ambient temperature before ignition can occur. Flash point between 38 and 93 °C (100 and 200 °F). E.g. diesel fuelInstability 2: Undergoes violent chemical change at elevated temperatures and pressures, reacts violently with water, or may form explosive mixtures with water. E.g. white phosphorusSpecial hazard W: Reacts with water in an unusual or dangerous manner. E.g. sodium, sulfuric acid
2
2
2
W
Safety data sheet (SDS) Fisher Scientific
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is checkY☒N ?)

Aluminium carbide, chemical formula Al4C3, is a carbide of aluminium. It has the appearance of pale yellow to brown crystals. It is stable up to 1400 °C. It decomposes in water with the production of methane.

  1. ^ a b Mary Eagleson (1994). Concise encyclopedia chemistry. Walter de Gruyter. p. 52. ISBN 978-3-11-011451-5.
  2. ^ a b Gesing, T. M.; Jeitschko, W. (1995). "The Crystal Structure and Chemical Properties of U2Al3C4 and Structure Refinement of Al4C3". 50. Zeitschrift für Naturforschung B, A journal of chemical sciences: 196–200. {{cite journal}}: Cite journal requires |journal= (help)