Trimethylarsine

Trimethylarsine

Names
Preferred IUPAC name Trimethylarsane
Other names Gosio gas Trimethanidoarsenic
Identifiers
CAS Number	593-88-4 Y
3D model (JSmol)	Interactive image Interactive image
Beilstein Reference	1730780
ChEBI	CHEBI:27130 Y
ChemSpider	62200 Y
ECHA InfoCard	100.008.925
EC Number	209-815-8
Gmelin Reference	141657
MeSH	Trimethylarsine
PubChem CID	68978
RTECS number	CH8800000
UNII	MQ83UQ8A1Q Y
CompTox Dashboard (EPA)	DTXSID4073203
InChI InChI=1S/C3H9As/c1-4(2)3/h1-3H3 Y Key: HTDIUWINAKAPER-UHFFFAOYSA-N Y InChI=1/C3H9As/c1-4(2)3/h1-3H3 Key: HTDIUWINAKAPER-UHFFFAOYAT
SMILES [As](C)(C)C C[As](C)C
Properties
Chemical formula	C3H9As
Molar mass	120.027 g·mol−1
Appearance	Colourless liquid
Density	1.124 g cm−3
Melting point	−87.3 °C (−125.1 °F; 185.8 K)
Boiling point	56 °C (133 °F; 329 K)
Solubility in water	Slightly soluble
Solubility in other solvents	organic solvents
Structure
Coordination geometry	Trigonal pyramidal
Dipole moment	0.86 D
Hazards
Occupational safety and health (OHS/OSH):
Main hazards	Flammable
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H301, H331, H410
Flash point	−25 °C (−13 °F; 248 K)
Safety data sheet (SDS)	External MSDS
Related compounds
Related compounds	Cacodylic acid Triphenylarsine Pentamethylarsenic Trimethylphosphine Trimethylamine
Supplementary data page
Trimethylarsine (data page)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

Trimethylarsine (abbreviated TMA or TMAs) is the chemical compound with the formula (CH₃)₃As, commonly abbreviated AsMe₃ or TMAs. This organic derivative of arsine has been used as a source of arsenic in microelectronics industry,^[1] a building block to other organoarsenic compounds, and serves as a ligand in coordination chemistry. It has distinct "garlic"-like smell. Trimethylarsine had been discovered as early as 1854.