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7784-34-1

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7784-34-1 Usage

Chemical Properties

Arsenous trichloride is a noncombustible, colorless or pale yellow oily, fuming liquid. The odor is described as pungent and acrid.

Physical properties

Colorless oily liquid; fumes in air; density 2.163 g/ml at 20°C; refractive index 1.621 at 14°C; melts at 0.16°C; boils at 130.2°C; vapor pressure 9.75 torr at 25°C; decomposes in water; soluble in alcohol, ether, HCl and HBr.

Uses

Different sources of media describe the Uses of 7784-34-1 differently. You can refer to the following data:
1. Arsenic trichloride (AsCl3), also known as arsenic chloride, is used in the pharmaceutical industry and to make insecticides and ceramics.
2. Arsenic Trichloride is an highly toxic inorganic compounds and is an intermediate in the manufacture of organoarsenic compounds.
3. In the ceramic industry; in syntheses of chlorine-contg arsenicals, e.g., chloro derivatives of arsine.

Definition

Different sources of media describe the Definition of 7784-34-1 differently. You can refer to the following data:
1. ChEBI: A arsenic molecular entity that consists of a single arsenic atom bearing three chloro substituents.
2. A poisonous oily liquid. It fumesin moist air due to hydrolysis with water vapor:AsCl3 + 3H2O = As2O3 + 6HCl Arsenic(III) chloride is covalent and exhibits nonmetallic properties.

Preparation

The compound is generally made from arsenic trioxide by (i) passing chlorine over it or (ii) treating the trioxide with sulfur monochloride, S2Cl2. Alternatively it is prepared from arsenic trioxide by distillation with either concentrated hydrochloric acid or a mixture of sulfuric acid and a metal chloride. Arsenic trichloride may also be prepared by combination of arsenic and chlorine.

General Description

A colorless to yellow oily fuming liquid. ARSENIC(III) CHLORIDE is irritating to the skin, eyes, and mucous membranes. Very toxic by inhalation and ingestion.

Air & Water Reactions

Fumes in air. Reacts with water to form hydrochloric acid and As(OH)3.

Reactivity Profile

When ARSENIC CHLORIDE is heated to decomposition or on contact with mineral acids, ARSENIC(III) CHLORIDE emits highly toxic fumes of hydrogen chloride and of metallic arsenic. Explodes with Na, K, and Al on impact [Sax, 9th ed., 1996, p. 275]. The interaction of hexafluoroisopropylideneaminolithium with a range of chlorinated and /or fluorinated derivatives of arsenic, boron, phosphorus, silicon, and sulfur yielded a violently exothermic reaction.

Hazard

Strong irritant to eyes and skin.

Health Hazard

ARSENIC(III) CHLORIDE can cause death. In acute exposures, it is extremely toxic and caustic, owing not only to the poisonous nature of arsenic, but also to the release of hydrochloric acid in the presence of water. Exposure to the skin causes local irritation and blisters. Inhalation or ingestion causes hemorrhagic gastroenteritis resulting in loss of fluids and electrolytes, collapse, shock and death. Chronic poisoning can lead to peripheral nerve damage, skin conditions, liver damage and it has been implicated in the induction of skin and lung cancer. The fatal human dose is 70-180 mg depending on the weight of the victim.

Fire Hazard

When in contact with active metals such as arsenic, iron, aluminum, zinc, or when heated to decomposition, ARSENIC(III) CHLORIDE emits highly toxic fumes of arsenic. Upon contact with water hydrogen chloride is produced. Water causes ARSENIC(III) CHLORIDE to decompose to yield arsenic acid and hydrochloric acid. Avoid active metals such as arsenic, iron, aluminum, zinc, decomposed by water to form arsenic hydroxide and hydrogen chloride. Avoid air, ultraviolet light. Hazardous polymerization may not occur.

Safety Profile

Confirmed human carcinogen. A poison via inhalation. See also ARSENIC COMPOUNDS and CHLORIDES. Very poisonous; fumes in air. Mutation data reported. When heated to decomposition it emits very toxic fumes of As and Cl-. Highly reactive. Explodes with Na, K, and Al on impact.

Potential Exposure

Arsenic chloride is used in the ceramics industry; in the synthesis of chlorine-containing arsenicals; as a chemical intermediate for arsenic insecticides, pharmaceuticals; and has been used in chemical warfare agents.

Shipping

UN1560 Arsenic trichloride, Hazard class 6.1; Labels: 6.1-Poison Inhalation Hazard, Inhalation Hazard Zone B.

Purification Methods

Reflux the trichloride with arsenic for 4hours, then fractionally distil it. The middle fraction is stored with sodium wire for two days, then again distilled [Lewis & Sowerby J Chem Soc 336 1957]. It fumes in moist air forming the solid hydroxy-chloride [AsCl(OH)2] and is readily hydrolysed by H2O to form arsenious acid. POISONOUS. [Schenk in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 596 1963.]

Incompatibilities

Contact with sodium, potassium, or powdered aluminum may cause a violent reaction. It is decomposed in water, forming arsenic hydroxide and hydrogen chloride. Exposure to light forms toxic gas. Violent reaction with anhydrous ammonia, strong acids; strong oxidizers and halogens. Incompatible with alkali metals; active metals, such as arsenic, iron, aluminum, zinc. Corrodes metals in the presence of moisture and forms flammable and explosive hydrogen gas.

Waste Disposal

Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≥100 kg/mo) must conform with EPA regulations governing storage, transportation, treatment, and waste disposal. Dissolve in a minimum of concentrated hydrochloric acid. Dilute with water until white precipitate forms. Add HCl to dissolve. Saturate with H2S; filter and wash precipitate and return to supplier. Alternatively, precipitate with heavy metals, such as lime or ferric hydroxide in lieu of H2S.If needed, seek professional environmental engineering assistance from the United States Environmental Protection Agency Environmental Response Team at (908) 548-8730 (24-hour response line). In accordance with 40CFR165, follow recommendations for the disposal of pesticides and pesticide containers. Must be disposed properly by following package label directions or by contacting your local or federal environmental control agency, or by contacting your regional EPA office.

Check Digit Verification of cas no

The CAS Registry Mumber 7784-34-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,7,8 and 4 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 7784-34:
(6*7)+(5*7)+(4*8)+(3*4)+(2*3)+(1*4)=131
131 % 10 = 1
So 7784-34-1 is a valid CAS Registry Number.
InChI:InChI=1/AsH3.3ClH/h1H3;3*1H/q+3;;;/p-3

7784-34-1SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1 GHS Product identifier

Product name arsenic trichloride

1.2 Other means of identification

Product number -
Other names Arsenic(II) bromide

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:7784-34-1 SDS

7784-34-1Relevant articles and documents

Reinitzer, B.,Goldschmidt, H.

, (1880)

Fresenius

, p. 200 - 202 (1886)

Kubina, H.,Plichta, J.

, p. 235 - 247 (1928)

Kubina, H.

, p. 1 - 36 (1929)

Synthesis of a Homologous Series of Trialkyl Arsines (C3-C12) and Applications of Arsenic Triiodide as a Synthetic Precursor

Ligiéro, Carolina B.P.,Francisco, Marcos A.S.,Gama, Michelle S.,Carbonezi, Carlos A.,Leocadio, Isabela C.L.,de Souza, Wladmir F.,Esteves, Pierre M.

, p. 912 - 916 (2021/03/17)

This work presents some modifications in the post-synthetic processing for a classical arsenic reagent: AsI3. In comparison with the widely used analog, the trichloride, arsenic triiodide presents several advantages such as low toxicity, air stability, and low volatility. It was used as a synthetic precursor in the preparation of a variety of arsenic(III) derivatives like arsines, arsenites, and thioarsenites. Besides that, AsI3 was submitted to a diversity-oriented Grignard reaction in the preparation of a homologous series of trialkyl arsines ranging from AsC3H9 to AsC12H27. The series was analyzed by comprehensive two-dimensional gas chromatography coupled with time-of-flight mass spectrometry to provide a trialkyl arsines library that can be used for the direct analysis of natural samples.

Thermogravimetric study of GaAs chlorination between -30 and 900 °c

Tunez, Fernando M.,Gonzalez, Jorge A.,Ruiz, María Del C.

, p. 124 - 136 (2011/11/13)

Gallium (as GaAs) is at present an essential part of electronic devices, and the recovery of this element from electronic wastes is fundamental for the metallurgic industry. In this work, with the aim of recovering Ga by chlorination, the following reacti

Reactivity of Sulphuryl Chloride in Acetonitrile with the Elements

Woolf, Alfred A.

, p. 3325 - 3330 (2007/10/02)

Sulphuryl chloride in MeCN reacts with all but the most refractory elements to give mainly solvated chlorides at or below 300 K in contrast with SO2Cl2 alone which requires at least twice this temperature.There is evidence for an ionic mechanism based on analogy, thermochemistry, transport measurements and additive effects.The instability of these solutions leading to polymerization, together with its inhibition, is described.Sulphur dioxide formed in reactions seldom plays a reductive role apart from influencing formation of the mixed-valence Tl4Cl6.Semiquantitative kinetic measurements in different solvents emphasize the uniqueness of MeCN.For most elements attack is diffusion controlled across surface films giving a parabolic dependence on time which can be linearized if film growth is prevented by changing the solvent mix.The varied nature of these surface films vitiates any simple relation between rate and periodicity.Some applications are indicated.

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