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7784-42-1

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Basic Information
CAS No.: 7784-42-1
Name: Arsenic trihydride
Article Data: 298
Molecular Structure:
Molecular Structure of 7784-42-1 (Arsenic trihydride)
Formula: AsH3
Molecular Weight: 75.9295
Synonyms: Arsenichydride; Arsenic hydride (AsH3); Arsenic trihydride; Arseniuretted hydrogen;Arsenous hydride; Hydrogen arsenide
EINECS: 232-066-3
Density: 2.695
Melting Point: -117 C
Boiling Point: -62 to -63 C
Solubility: slight

Stability

    Stable, but pyrophoric. Capable of detonation with some initiators. Flammable. Incompatible with oxidizing agents, chlorine, nitric acid.

Toxicology

    Extremely toxic by inhalation. IARC gro
Appearance: colourless gas smelling of garlic
Hazard Symbols: Highly poisonous by inhalation. TLV: 0.05 ppm.
Risk Codes: R12; R26; R48/20; R50/53
Safety: Confirmed human carcinogen. Poison by inhalation. Human red blood cell, gastrointestinal system, central nervous system, and other systemic effects by inhalation. Flammable when exposed to flame. Moderately explosive when exposed to Cl2, HNO3, (K + NH3), open flame, or powerful shock. Dangerous, more toxic than its oxidation product. When heated to decomposition it emits highly toxic fumes of arsenic. See also ARSENIC, ARSENIC COMPOUNDS, and HYDRIDES.

Analytical Methods:

   

For occupational chemical analysis use OSHA: #ID-125 G or NIOSH: Arsine, 6001.

PSA: 0.00000
LogP: -0.04330
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Chemistry

Arsine is a chemical compound with some properties like flammable, pyrophoric, and highly toxic,etc.It has some synonyms like Arsenic hydride;Arsenic hydrid;Arsenic trihydride;Arseniuretted hydrogen;Arsenous hydride;Arsenowodor;Arsenwasserstoff,and so on.

Molecular Formula: AsH3
Molecular Weigth: 77.95
EINECS: 232-066-3

Uses

Arsine is commonly applicated in the semiconductor industry and for the synthesis of organoarsenic compounds.

Production

Arsine can be synthesized as follows:
4 AsCl3 + 3 NaBH4 → 4 AsH3 + 3 NaCl + 3 BCl3
Zn3As2 + 6 H+ → 2 AsH3 + 3 Zn2+

Toxicity Data With Reference

1.   

ihl-hmn TCLo:3 ppm:RBC

   AMIHAB    AMA Archives of Industrial Health. 21 (1960),132.
2.   

ihl-hmn LCLo:25 ppm/30 M

   AEHLAU    Archives of Environmental Health. 19 (1969),133.
3.   

ihl-man TDLo:338 ppt:GIT

   AEHLAU    Archives of Environmental Health. 34 (1979),224.
4.   

ihl-man TDLo:338 ppt:SYS

   AEHLAU    Archives of Environmental Health. 34 (1979),224.
5.   

ihl-man TDLo:338 ppt:CNS

   AEHLAU    Archives of Environmental Health. 34 (1979),224.
6.   

ihl-rat LCLo:300 mg/m3/15 M

   FATOAO    Farmakologiya i Toksikologiya (Moscow). 30 (2)(1967),226.
7.   

ihl-mus LCLo:70 mg/m3/3 H

   AEXPBL    Archiv fuer Experimentelle Pathologie und Pharmakologie. 80 (1917),288.
8.   

ihl-dog LCLo:400 mg/m3/15 M

   FATOAO    Farmakologiya i Toksikologiya (Moscow). 30 (2)(1967),226.
9.   

ihl-mky LCLo:70 mg/m3/15 M

   HBAMAK    “Abdernalden’s Handbuch der Biologischen Arbeitsmethoden.“ 4 (1935),1289.
10.   

ihl-cat LCLo:150 mg/m3/20 M

   HBAMAK    “Abdernalden’s Handbuch der Biologisch

Consensus Reports

IARC Cancer Review: Human Sufficient Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 23 (1980),p. 39.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) . Reported in EPA TSCA Inventory. Arsenic and its compounds are on the Community Right-To-Know List. EPA Extremely Hazardous Substances List.

Safety Profile

Confirmed human carcinogen. Poison by inhalation. Human red blood cell, gastrointestinal system, central nervous system, and other systemic effects by inhalation. Flammable when exposed to flame. Moderately explosive when exposed to Cl2, HNO3, (K + NH3), open flame, or powerful shock. Dangerous, more toxic than its oxidation product. When heated to decomposition it emits highly toxic fumes of arsenic.

Hazard Codes:  F+,T+,N
Risk Statements:  12-26-48/20-50/53
Safety Statements:  9-16-28-33-36/37-45-60-61
RIDADR:  2188
HazardClass:  2.3

Standards and Recommendations

OSHA PEL: TWA 0.05 ppm
ACGIH TLV: TWA 0.05 ppm
DFG MAK: 0.05 ppm (0.16 mg/m3)
NIOSH REL: (Arsine) CL 2 μg(As)/m3/15 M
DOT Classification:  2.3; Label: Poison Gas, Flammable Gas

Analytical Methods

For occupational chemical analysis use OSHA: #ID-125 G or NIOSH: Arsine, 6001.