Description

Arsenic Acid, Hemihydrate is a high-purity inorganic compound primarily used as a powerful oxidizing agent and precursor in specialized chemical synthesis. Its strong oxidizing properties make it a critical reagent for driving specific redox reactions and producing other arsenic compounds. This material is essential for manufacturers and research facilities in the electronics, metallurgy, and fine chemical sectors, where precise control over oxidation processes is required.

Application

• Chemical Synthesis: Acts as a key precursor and oxidizing agent in the production of other arsenic salts and organoarsenic compounds.
• Electronics Industry: Used in the formulation of specialized dopants and etching solutions for semiconductor manufacturing.
• Wood Preservation: Employed in the synthesis of certain wood preservative formulations (subject to strict regional regulations).
• Metallurgy: Utilized in metal surface treatment and as a component in specific alloy production processes.
• Analytical Chemistry: Serves as a standard or reagent in specific analytical methods for arsenic determination.
• Glass Manufacturing: Used in small quantities to modify the optical properties of specialty glasses.
• Research & Development: A vital reagent for academic and industrial R&D in inorganic and materials chemistry.

Basic Information

Product Name	Arsenic Acid, Hemihydrate
CAS No.	7774-41-6
Molecular Formula	H3AsO4 · ½H2O
Molecular Weight	150.95 g/mol (anhydrous basis)
Synonyms	Arsenic(V) acid hemihydrate; Orthoarsenic acid hemihydrate; Arsenic acid (H3AsO4) hemihydrate; Zotox; Desiccant L-10; Arsan
EINECS	231-901-9

Quality Control

Our Arsenic Acid, Hemihydrate is manufactured under strict quality management systems to ensure batch-to-batch consistency and reliability. Each lot undergoes comprehensive analytical testing, including assay, impurity profiling, and physical characterization, to meet exacting customer specifications. A detailed Certificate of Analysis (COA) documenting purity, heavy metal content, and other critical parameters is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials. Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption. Store at controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	White crystalline solid or powder
Identification (IR)	Conforms
Assay (As2O5 basis)	≥ 98.0 %
Chloride (Cl)	≤ 0.005 %
Sulfate (SO4)	≤ 0.01 %
Heavy Metals (as Pb)	≤ 10 ppm
Iron (Fe)	≤ 20 ppm
Loss on Drying	≤ 1.0 %

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.