Arsenic Chloride



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(2N) 99% Arsenic Chloride AS-CL-02 Pricing
(3N) 99.9% Arsenic Chloride AS-CL-03 Pricing
(4N) 99.99% Arsenic Chloride AS-CL-04 Pricing
(5N) 99.999% Arsenic Chloride AS-CL-05 Pricing


Compound Formula AsCl3
Molecular Weight 181.28
Appearance colourless liquid
Melting Point -16.2 °C, 257 K, 3 °F
Boiling Point 130.2 °C, 403 K, 266 °F
Density 2.15g/cm3
Monoisotopic Mass 179.828
Exact Mass 179.828

Health & Safety Info  |  MSDS / SDS

Signal Word Danger
Hazard Statements H301-H331-H410
Hazard Codes T,N
Risk Codes 23/25-50/53
Safety Statements 20/21-28-45-60-61
RTECS Number N/A
Transport Information UN 1560 6.1/PG 1
WGK Germany 3


Arsenic Chloride is generally immediately available in most volumes. High purity, submicron and nanopowder forms may be considered. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.


Arsenic trichloride, Trichloroarsine, Arsenic butter, Arsenous chloride, Arsenic(III) chloride, Arsenous trichloride, Fuming liquid arsenic, Caustic oil of arsenic

Chemical Identifiers

Formula AsCl3
CAS 7784-34-1
Pubchem CID 24570
MDL MFCD00014165
EC No. 232-059-5
IUPAC Name trichloroarsane
Beilstein Registry No. N/A
InchI Identifier InChI=1S/AsCl3/c2-1(3)4

Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

Related Products & Element Information

See more Arsenic products. Arsenic (atomic symbol: As, atomic number: 33) is a Block P, Group 15, Period 4 element with an atomic radius of 74.92160. Arsenic Bohr ModelThe number of electrons in each of arsenic's shells is 2, 8, 18, 5 and its electron configuration is [Ar] 3d10 4s2 4p3. The arsenic atom has a radius of 119 pm and a Van der Waals radius of 185 pm. Arsenic was discovered in the early Bronze Age, circa 2500 BC. It was first isolated by Albertus Magnus in 1250 AD. In its elemental form, arsenic is a metallic grey, brittle, crystalline, semimetallic solid. Elemental ArsenicArsenic is found in numerous minerals including arsenolite (As2O3), arsenopyrite (FeAsS), loellingite (FeAs2), orpiment (As2S3), and realgar (As4S4). Arsenic has numerous applications as a semiconductor and other electronic applications as indium arsenide, silicon arsenide and tin arsenide. Arsenic is finding increasing uses as a doping agent in solid-state devices such as transistors.

Recent Research

Estimation of arsenic in agricultural soils using hyperspectral vegetation indices of rice., Shi, Tiezhu, Liu Huizeng, Chen Yiyun, Wang Junjie, and Wu Guofeng , J Hazard Mater, 2016 May 5, Volume 308, p.243-52, (2016)

Arsenic(V) biosorption by charred orange peel in aqueous environments., Abid, Muhammad, Niazi Nabeel Khan, Bibi Irshad, Farooqi Abida, Ok Yong Sik, Kunhikrishnan Anitha, Ali Fawad, Ali Shafaqat, Igalavithana Avanthi Deshani, and Arshad Muhammad , Int J Phytoremediation, 2016 May 3, Volume 18, Issue 5, p.442-9, (2016)

Inorganic arsenic speciation by differential pulse anodic stripping voltammetry using thoria nanoparticles-carbon paste electrodes., Pereira, F J., Vázquez M D., Debán L, and Aller A J. , Talanta, 2016 May 15, Volume 152, p.211-8, (2016)

Urinary inorganic arsenic concentrations and semen quality of male partners of subfertile couples in Tokyo., Oguri, Tomoko, Yoshinaga Jun, Toshima Hiroki, Mizumoto Yoshifumi, Hatakeyama Shota, and Tokuoka Susumu , J Environ Sci Health A Tox Hazard Subst Environ Eng, 2016 May 11, Volume 51, Issue 6, p.463-6, (2016)

Stability of arsenate-bearing Fe(III)/Al(III) co-precipitates in the presence of sulfide as reducing agent under anoxic conditions., Doerfelt, Christoph, Feldmann Thomas, Roy Ranjan, and Demopoulos George P. , Chemosphere, 2016 May, Volume 151, p.318-23, (2016)

Atmospheric metallic and arsenic pollution at an offshore drilling platform in the Bo Sea: A health risk assessment for the workers., Xu, Hong, Han Suqin, Bi Xiaohui, Zhao Zhijing, Zhang Lei, Yang Wenjie, Zhang Min, Chen Jing, Wu Jianhui, Zhang Yufen, et al. , J Hazard Mater, 2016 Mar 5, Volume 304, p.93-102, (2016)

Arsenate sorption on monohydrocalcite by coprecipitation during transformation to aragonite., Fukushi, Keisuke, Sakai Minoru, Munemoto Takashi, Yokoyama Yuka, and Takahashi Yoshio , J Hazard Mater, 2016 Mar 5, Volume 304, p.110-7, (2016)

Red mud (RM)-Induced enhancement of iron plaque formation reduces arsenic and metal accumulation in two wetland plant species., Yang, J X., Guo Q J., Yang J, Zhou X Y., Ren H Y., Zhang H Z., Xu R X., Wang X D., Peters M, Zhu G X., et al. , Int J Phytoremediation, 2016 Mar 3, Volume 18, Issue 3, p.269-77, (2016)

Removal of arsenic from water using manganese (III) oxide: Adsorption of As(III) and As(V)., Babaeivelni, Kamel, and Khodadoust Amid P. , J Environ Sci Health A Tox Hazard Subst Environ Eng, 2016 Mar 20, Volume 51, Issue 4, p.277-88, (2016)

Synergistic interaction of glyceraldehydes-3-phosphate dehydrogenase and ArsJ, a novel organoarsenical efflux permease, confers arsenate resistance., Chen, Jian, Yoshinaga Masafumi, Garbinski Luis D., and Rosen Barry P. , Mol Microbiol, 2016 Mar 15, (2016)