Arsenic Chloride

CAS 7784-34-1
Linear Formula: AsCl3
MDL Number: MFCD00014165
EC No.: 232-059-5

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(2N) 99% Arsenic Chloride
(3N) 99.9% Arsenic Chloride
(4N) 99.99% Arsenic Chloride
(5N) 99.999% Arsenic Chloride


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-H310-H410
Hazard Codes T,N
Precautionary Statements P261-P273-P280-P301 + P310-P302 + P350-P310
Risk Codes 23/25-50/53
Safety Statements 20/21-28-45-60-61
Transport Information UN 1560 6.1 / PGI
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

Linear Formula AsCl3
CAS 7784-34-1
Pubchem CID 24570
MDL Number MFCD00014165
EC No. 232-059-5
Beilstein Registry No. N/A
IUPAC Name trichloroarsane
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

Infrared and Raman spectroscopic characterizations on new Fe sulphoarsenate hilarionite (Fe2((III))(SO4)(AsO4)(OH)·6H2O): Implications for arsenic mineralogy in supergene environment of mine area., Liu, Jing, He Lile, Dong Faqin, and Frost Ray L. , Spectrochim Acta A Mol Biomol Spectrosc, 2017 Jan 5, Volume 170, p.9-13, (2017)

In-situ mobilization and transformation of iron oxides-adsorbed arsenate in natural groundwater., Zhang, Di, Guo Huaming, Xiu Wei, Ni Ping, Zheng Hao, and Wei Cao , J Hazard Mater, 2016 Sep 9, Volume 321, p.228-237, (2016)

Synthesis and characterization of ZnO:CeO2:nanocellulose:PANI bionanocomposite. A bimodal agent for arsenic adsorption and antibacterial action., Nath, B K., Chaliha C, Kalita E, and Kalita M C. , Carbohydr Polym, 2016 Sep 5, Volume 148, p.397-405, (2016)

Spatial and seasonal changes of arsenic species in Lake Taihu in relation to eutrophication., Yan, Changzhou, Che Feifei, Zeng Liqing, Wang Zaosheng, Du Miaomiao, Wei Qunshan, Wang Zhenhong, Wang Dapeng, and Zhen Zhuo , Sci Total Environ, 2016 Sep 1, Volume 563-564, p.496-505, (2016)

Zirconium/PVA modified flat-sheet PVDF membrane as a cost-effective adsorptive and filtration material: A case study on decontamination of organic arsenic in aqueous solutions., Zhao, Dandan, Yu Yang, Wang Chenghong, and J Chen Paul , J Colloid Interface Sci, 2016 Sep 1, Volume 477, p.191-200, (2016)

Modeling packed bed sorbent systems with the Pore Surface Diffusion Model: Evidence of facilitated surface diffusion of arsenate in nano-metal (hydr)oxide hybrid ion exchange media., Dale, Sachie, Markovski Jasmina, and Hristovski Kiril D. , Sci Total Environ, 2016 Sep 1, Volume 563-564, p.965-70, (2016)

The global menace of arsenic and its conventional remediation - A critical review., Sarkar, Arpan, and Paul Biswajit , Chemosphere, 2016 Sep, Volume 158, p.37-49, (2016)

Quantitative assessment of possible human health risk associated with consumption of arsenic contaminated groundwater and wheat grains from Ropar Wetand and its environs., Sharma, Sakshi, Kaur Jagdeep, Nagpal Avinash Kaur, and Kaur Inderpreet , Environ Monit Assess, 2016 Sep, Volume 188, Issue 9, p.506, (2016)

Arsenic entrapment by nanocrystals of Al-magnetite: The role of Al in crystal growth and As retention., Freitas, Erico T. F., Stroppa Daniel G., Montoro Luciano A., de Mello Jaime W. V., Gasparon Massimo, and Ciminelli Virginia S. T. , Chemosphere, 2016 Sep, Volume 158, p.91-9, (2016)

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