Arsine

Arsine
Ball-and-stick model of arsine	Spacefill model of arsine Arsenic, As Hydrogen, H
Names
	IUPAC names Arsenic trihydride; Arsane; Trihydridoarsenic
	Other names Arseniuretted hydrogen,; Arsenous hydride,; Hydrogen arsenide; Arsenic hydride
Identifiers
CAS Number	7784-42-1 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:47217 ;
ChEMBL	ChEMBL1231052;
ChemSpider	22408 ;
ECHA InfoCard	100.029.151
EC Number	232-066-3;
Gmelin Reference	599
KEGG	C06269;
PubChem CID	23969;
RTECS number	CG6475000;
UNII	V1I29R0RJQ ;
UN number	2188
CompTox Dashboard (EPA)	DTXSID3023760 ;
	InChI InChI=1S/AsH3/h1H3 Key: RBFQJDQYXXHULB-UHFFFAOYSA-N ; InChI=1/AsH3/h1H3 Key: RBFQJDQYXXHULB-UHFFFAOYAH;
	SMILES [AsH3];
Properties
Chemical formula	AsH3
Molar mass	77.9454 g/mol
Appearance	Colourless gas
Odor	Faint, garlic-like
Density	4.93 g/L, gas; 1.640 g/mL (−64 °C)
Melting point	−111.2 °C (−168.2 °F; 162.0 K)
Boiling point	−62.5 °C (−80.5 °F; 210.7 K)
Solubility in water	0.2 g/100 mL (20 °C); 0.07 g/100 mL (25 °C)
Solubility	soluble in chloroform, benzene
Vapor pressure	14.9 atm
Conjugate acid	Arsonium
Structure
Molecular shape	Trigonal pyramidal
Dipole moment	0.20 D
Thermochemistry
Std molar; entropy (S⦵298)	223 J⋅K−1⋅mol−1
Std enthalpy of; formation (ΔfH⦵298)	+66.4 kJ/mol
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Extremely toxic, explosive, flammable, potential occupational carcinogen
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H220, H330, H373, H410
Precautionary statements	P210, P260, P271, P273, P284, P304+P340, P310, P314, P320, P377, P381, P391, P403, P403+P233, P405, P501
NFPA 704 (fire diamond)	4 4 2
Flash point	−62 °C (−80 °F; 211 K)
Explosive limits	5.1–78%
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	2.5 mg/kg (intravenous)
LC50 (median concentration)	120 ppm (rat, 10 min); 77 ppm (mouse, 10 min); 201 ppm (rabbit, 10 min); 108 ppm (dog, 10 min);
LCLo (lowest published)	250 ppm (human, 30 min); 300 ppm (human, 5 min); 25 ppm (human, 30 min);
	NIOSH (US health exposure limits):
PEL (Permissible)	TWA 0.05 ppm (0.2 mg/m3)
REL (Recommended)	C 0.002 mg/m3 [15-minute]
IDLH (Immediate danger)	3 ppm
Related compounds
Related hydrides	Ammonia; phosphine; stibine; bismuthine
Supplementary data page
	Arsine (data page)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Arsine (IUPAC name: arsane) is an inorganic compound with the formula As H₃. This flammable, pyrophoric, and highly toxic pnictogen hydride gas is one of the simplest compounds of arsenic.^[4] Despite its lethality, it finds some applications in the semiconductor industry and for the synthesis of organoarsenic compounds. The term arsine is commonly used to describe a class of organoarsenic compounds of the formula AsH_3−xR_x, where R = aryl or alkyl. For example, As(C₆H₅)₃, called triphenylarsine, is referred to as "an arsine".

^ ^a ^b ^c ^d ^e ^f ^g NIOSH Pocket Guide to Chemical Hazards. "#0040". National Institute for Occupational Safety and Health (NIOSH).
^ Levvy, G.A. (1946). "The Toxicity of Arsine Administered by Intraperitoneal Injection". British Journal of Pharmacology and Chemotherapy. 1 (4): 287–290. doi:10.1111/j.1476-5381.1946.tb00049.x. PMC 1509744. PMID 19108099.
^ ^a ^b Cite error: The named reference IDLH was invoked but never defined (see the help page).
^ Cite error: The named reference Holleman was invoked but never defined (see the help page).

[PGCH-1] ^ ^a ^b ^c ^d ^e ^f ^g NIOSH Pocket Guide to Chemical Hazards. "#0040". National Institute for Occupational Safety and Health (NIOSH).

[2] Levvy, G.A. (1946). "The Toxicity of Arsine Administered by Intraperitoneal Injection". British Journal of Pharmacology and Chemotherapy. 1 (4): 287–290. doi:10.1111/j.1476-5381.1946.tb00049.x. PMC 1509744. PMID 19108099.

[IDLH-3] Cite error: The named reference IDLH was invoked but never defined (see the help page).

[Holleman-4] Cite error: The named reference Holleman was invoked but never defined (see the help page).

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