Tribromoarsane

AsBr3

tribromoarsane

CAS7784-33-0

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Identification

CAS Number
7784-33-0
EC Number
232-057-4
UN Number
1555
Index Number
033-002-00-5
PubChem CID
24569

Physical-chemical properties

Molecular Formula
AsBr3
Molar Mass
314.63 g/mol
IUPAC Name
tribromoarsane

Chemical Identifiers

InChI
InChI=1S/AsBr3/c2-1(3)4
InChI Key
JMBNQWNFNACVCB-UHFFFAOYSA-N

Overview

Tribromoarsane (CAS 7784-33-0) is an inorganic arsenic compound with three bromine atoms bonded to a central arsenic atom, forming a pyramidal molecular structure. This organoarsenic compound, with the molecular formula AsBr3 and a molecular weight of 314.63 g/mol, represents an important class of halogenated arsenic derivatives used in specialized chemical applications. The tribromoarsane molecule exhibits typical properties of arsenic trihalides, displaying both Lewis acid behavior and potential for further chemical transformations. Its classification under ADR Class 6.1 indicates its toxic nature, requiring careful handling protocols and appropriate safety measures during transportation and storage. The compound's chemical structure consists of arsenic in the +3 oxidation state, surrounded by three bromine atoms in a trigonal pyramidal geometry due to the presence of a lone pair of electrons on the arsenic center. This configuration influences both its reactivity patterns and physical properties. Tribromoarsane is moisture-sensitive and can undergo hydrolysis reactions in the presence of water, making proper storage conditions essential for maintaining product integrity. In industrial applications, tribromoarsane serves primarily as a specialized reagent in organic synthesis, particularly in the preparation of organoarsenic compounds and as an intermediate in pharmaceutical research. It finds use in advanced materials science for the synthesis of semiconductor precursors and in specialized analytical chemistry applications. Unlike simpler aromatic compounds such as 4-nitroaniline or 1-methoxy-4-nitrobenzene, tribromoarsane requires more stringent handling procedures due to its inorganic arsenic content. OYSI provides tribromoarsane to qualified industrial customers with appropriate technical support and comprehensive safety documentation.

Safety & Classification

No Hazard Classification

This substance is not classified as hazardous according to CLP Regulation (EC) No 1272/2008.

Transport (ADR)

UN Number1555
ADR Class6.1
Packing GroupII
Tunnel CodeD/E
Proper Shipping NameArsenbromid, fest
Marine PollutantNo

Frequently Asked Questions

What is tribromoarsane?

Tribromoarsane is an inorganic arsenic compound with the chemical formula AsBr3 and CAS number 7784-33-0. This chemical substance has a molecular weight of 314.63 g/mol and belongs to the family of arsenic halides. It is classified as a toxic substance under transport regulations (ADR class 6.1, Group II), indicating its hazardous nature and requiring careful handling in industrial applications.

What are the physicochemical properties of tribromoarsane?

Tribromoarsane is a crystalline solid at room temperature with distinctive physicochemical characteristics typical of arsenic bromides. As an arsenic halide compound, it exhibits hygroscopic properties and can react with moisture in air. The compound has a relatively high molecular weight of 314.63 g/mol due to the presence of three bromine atoms bonded to the central arsenic atom, giving it specific density and solubility characteristics.

What is tribromoarsane used for?

Tribromoarsane serves primarily as a chemical intermediate in synthetic chemistry and specialized industrial processes. It is commonly used in the preparation of other organoarsenic compounds and as a reagent in analytical chemistry applications. The compound finds applications in research laboratories for specialized syntheses and may be utilized in the semiconductor industry for specific manufacturing processes requiring arsenic-containing precursors.

How to handle tribromoarsane safely?

Tribromoarsane requires strict safety protocols due to its toxic classification (ADR class 6.1). Personnel must wear appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and respiratory protection. Work should be conducted in well-ventilated areas or under fume hoods to prevent inhalation exposure. Avoid direct skin contact and ensure proper training before handling this toxic substance.

How to store tribromoarsane correctly?

Tribromoarsane must be stored in tightly sealed containers in a cool, dry, and well-ventilated area away from incompatible materials. Due to its toxic nature (ADR class 6.1), storage areas should be clearly labeled and access restricted to trained personnel. The compound should be kept away from moisture, strong oxidizing agents, and bases to prevent unwanted reactions and maintain product stability.

What to do in case of contact with tribromoarsane?

Tribromoarsane exposure requires immediate emergency response due to its toxic properties. In case of skin contact, immediately flush the affected area with plenty of water for at least 15 minutes and remove contaminated clothing. For eye contact, rinse thoroughly with water and seek immediate medical attention. If inhaled, move the person to fresh air and contact emergency medical services immediately.

How to dispose of tribromoarsane appropriately?

Tribromoarsane disposal must comply with local and European waste regulations for toxic substances. This compound cannot be disposed of through regular waste streams and requires specialized hazardous waste treatment. Contact licensed waste disposal companies experienced in handling arsenic compounds. Never pour down drains or release into the environment, as this poses serious environmental and health risks requiring professional remediation.

How to transport tribromoarsane?

Tribromoarsane is classified under ADR class 6.1 (toxic substances), Group II, requiring specific transport protocols for dangerous goods. Shipments must use appropriate packaging meeting UN specifications and display proper hazard labels and documentation. Only certified dangerous goods carriers can transport this substance, and all personnel involved must have appropriate training in handling toxic materials during transit.

Is tribromoarsane subject to specific regulations?

Tribromoarsane is subject to various European chemical regulations including REACH registration requirements for commercial use. While not currently listed as a Substance of Very High Concern (SVHC), its arsenic content means it may be subject to restrictions under national regulations regarding toxic substances. Users must comply with CLP classification requirements and workplace safety directives when handling this compound.

Where to buy tribromoarsane in Europe?

Tribromoarsane is available through OYSI, a specialized European distributor of technical chemicals and laboratory reagents. As a professional chemical supplier, OYSI can provide this toxic substance to qualified industrial customers and research institutions with proper handling capabilities. Contact OYSI directly to discuss availability, packaging options, and delivery arrangements for tribromoarsane within Europe, ensuring compliance with transport regulations.

Data Sources

Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.