Description

Realgar is an inorganic compound primarily known as arsenic(II) sulfide. This distinctive red-orange mineral is valued for its specific chemical properties and historical significance in various industrial processes. It serves as a critical raw material and intermediate in sectors requiring specialized arsenic compounds. Key industries that utilize this product include pyrotechnics, traditional medicine (with strict regulatory oversight), semiconductor manufacturing, and as a pigment in specialized applications.

Application

• Pyrotechnics and Fireworks: Used as a coloring agent to produce specific red and orange hues.
• Semiconductor Industry: Acts as a dopant source in the production of gallium arsenide and other III-V semiconductors.
• Traditional Medicine (Research): Employed in some traditional medicinal preparations, subject to rigorous pharmacological research and stringent safety regulations.
• Pigments and Dyes: Serves as a source for arsenic-based pigments in specialized artistic and industrial coatings.
• Wood Preservation: Historically used in wood preservatives; modern use is heavily regulated and largely replaced.
• Leather Tanning: Utilized in specific tanning processes for hides.
• Chemical Synthesis: Functions as a precursor or reagent in the synthesis of other arsenic compounds.
• Archaeological & Art Conservation: Used in studies and preservation of historical artifacts containing realgar.

Basic Information

Product Name	Realgar
CAS No.	12044-30-3
Molecular Formula	As4S4 / AsS
Molecular Weight	427.95 g/mol (for As4S4)
Synonyms	Arsenic disulfide; Ruby sulfur; Red arsenic; Arsenic(II) sulfide; Ruby of arsenic; Sandarac; Realgarite; Rauschrot; Arsenic monosulfide; α-As4S4
EINECS	234-977-1

Quality Control

Our Realgar is produced and handled under strict quality management protocols to ensure batch-to-batch consistency and purity. We provide comprehensive Certificates of Analysis (COA) for each lot, detailing key parameters such as arsenic sulfide content, heavy metal impurities, and particle size distribution. Our quality systems are designed to meet the stringent requirements of industrial and research applications, ensuring reliable performance and traceability.

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 light-sensitive and easily oxidized nature, long-term storage is recommended under an inert atmosphere (e.g., nitrogen or argon) to maintain product integrity. Keep container tightly sealed when not in use to minimize exposure to air and moisture.

Specification

Item	Specification
Appearance	Red-orange powder or crystalline solid
Identification (IR / XRD)	Conforms to standard
Assay (As4S4)	≥ 90.0% - 99.9% (Grade Dependent)
Arsenic (As) Content	Contact for details
Moisture Content	≤ 1.0%
Particle Size (Mesh)	Customizable (e.g., -100 mesh, -200 mesh)
Heavy Metals (as Pb)	≤ 0.002%
Insoluble Matter	≤ 0.5%

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