AsCl3
181.28 g/mol
Industrial ChemicalDanger
ARSENIC TRICHLORIDE
CAS7784-34-1EC232-059-5
Category
Industrial Chemical
Compound Class
Halocarbon
Primary Use
chemical intermediate for organoarsenic compounds
Arsenic trichloride is an inorganic compound with the formula AsCl3, also known as arsenous chloride or butter of arsenic. This poisonous, colorless oil is used as an intermediate in the manufacture of organoarsenic compounds.
chemical intermediate for organoarsenic compounds
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
Controlled substances
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CAS 7784-34-1
Related Compounds
ReferenceSame Category
Manganese(II) sulfate
CAS7785-87-7
Fertilizer and animal feed additive
ReferenceSame Category
Magnesium chloride
CAS7786-30-3
source of magnesium ions
ReferenceSame Category
Barium fluoride
CAS7787-32-8
Optical component and flux material
ReferenceSame Category
Barium iodide--water (1/2/2)
CAS7787-33-9
industrial chemical
Safety Reference
Danger
H300Fatal if swallowed
H301Toxic if swallowed
H331Toxic if inhaled
H310Fatal in contact with skin
H314Causes severe skin burns and eye damage
H350May cause cancer
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects
H319Causes serious eye irritation
H341Suspected of causing genetic defects
H361Suspected of damaging fertility or the unborn child
H370Causes damage to organs
H372Causes damage to organs through prolonged or repeated exposure
H315Causes skin irritation
Regulatory Compliance4
Customs Tariff Classification
The international HS code for ARSENIC TRICHLORIDE (CAS 7784-34-1) is 2812.19.
HS code (international, 6-digit)
2812.19
EU CN code (8-digit)
2812 19 90
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
trichloroarsane
InChIKey
OEYOHULQRFXULB-UHFFFAOYSA-N
SMILES
Cl[As](Cl)Cl
Synonyms (24)
- ARSENIC TRICHLORIDE
- Arsenic chloride
- Arsenic chloride (AsCl3)
- Arsenic(3+) chloride
- Arsenic(III) chloride
- Arsenic(III) trichloride
- Arsenicum Muriaticum
- Arsenious chloride
- Arsenous chloride
- Arsenous trichloride
- Arsentrichlorid
- Arsorous trichloride
- Caustic arsenic chloride
- Chlorure D'arsenic
- Chlorure arsenieux
- Chlorure arsenieux [French]
- Chlorure d'arsenic [French]
- Fuming liquid arsenic
- Trichloroarsine
- Trichlorure D'arsenic
- trichloroarsane