Arsenic

CAS 7440-38-2AsMetal & Ceramic Science

Arsenic (CAS 7440-38-2), with the chemical formula As and a molecular weight of 74.92 g/mol, is a metalloid known for its high purity, assaying at ≥99.999%. It exists as solid pieces. Arsenic finds critical applications in materials science, particularly in the development of semiconductors, alloys, and specialized glass manufacturing. Its unique electronic and structural properties make it indispensable in advanced technological applications.

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Arsenic (As) — chemical element, CAS 7440-38-2; Materials Science, fine chemical supplied by Tech Serve Solutions

ArsenicMaterials ScienceMetal and Ceramic ScienceMetals

01 /Applications

Semiconductor Manufacturing

High-purity arsenic is a crucial component in the production of compound semiconductors, such as gallium arsenide (GaAs), used in high-speed electronics, optoelectronics, and power devices.

Alloy Production

Incorporated into alloys, arsenic can improve hardness and strength. It is notably used in lead alloys to increase their durability, for example, in battery grids and ammunition.

Glass and Ceramics

Arsenic compounds are utilized in the glass industry to decolorize glass and as a refining agent. It also plays a role in the production of certain specialized ceramics and glazes.

Materials Science Research

Its elemental form and compounds are subjects of study in materials science for developing novel materials with specific electronic, optical, or structural properties.

02 /Properties

Molecular weight	74.92
Empirical formula	As
Assay	≥99.999%
Form	pieces
Boiling point	613 °C(lit.)
Density	5.727 g/mL at 25 °C(lit.)
Melting point	817 °C(lit.)

03 /Safety & handling

GHS hazard pictogram: Toxic (GHS06) — Toxic

GHS hazard pictogram: Environmental hazard (GHS09) — Environmental hazard

Danger

Hazard statements

H301Toxic if swallowed
H410Very toxic to aquatic life with long-lasting effects

Precautionary statements

P261Avoid breathing dust, fume, gas or vapours
P273Avoid release to the environment
P301IF SWALLOWED
P311Call a POISON CENTER or doctor
P501Dispose of contents and container per local regulations

Protective equipment	Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges
Transport (UN / ADR)	UN 1558 6.1 / PGII
Water hazard class (WGK, DE)	3
Hazard codes (EU)	T,N
Risk statements (R)	23/25-50/53
Safety statements (S)	20/21-28-45-60-61

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

7440-38-2

MDL number

MFCD00085309

PubChem substance

24852109

05 /Additional specifications

Resistivity	33.3 μΩ-cm

06 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

07 /Frequently asked questions

What is Arsenic (CAS 7440-38-2) used for?

Arsenic (CAS 7440-38-2) is primarily used in semiconductor manufacturing (e.g., gallium arsenide), alloy production, and in the glass and ceramics industry.

What is the CAS number and formula for Arsenic?

The CAS number for Arsenic is 7440-38-2 and its chemical formula is As.

What grade and purity does Tech Serve Solutions supply for Arsenic?

Tech Serve Solutions supplies Arsenic with an assay of ≥99.999%. This product is not represented as USP, BP, EP, or any other pharmacopoeia grade.

How is Arsenic handled and what are the safety concerns?

Arsenic is highly toxic if swallowed or inhaled and is very toxic to aquatic life with long-lasting effects. Handle with extreme care using appropriate personal protective equipment, including gloves, eye protection, and respiratory protection (P2 cartridges). Refer to the Safety Data Sheet for comprehensive handling procedures. Store in a cool, dry, well-ventilated area away from incompatible substances.

How is Arsenic packed, shipped, and exported?

Arsenic is supplied in piece form and is packed securely according to UN 1558, Class 6.1, Packing Group II regulations for safe transport. Tech Serve Solutions, as a global supplier, handles all export requirements.

How can I request a quote or sample for Arsenic?

To request a quote or a sample of Arsenic, please contact our sales team via the website or direct email, providing your specific requirements and shipping details.