Description

Copper Arsenate CAS NO 13478-34-7 is an inorganic compound primarily recognized for its role as a potent fungicide and wood preservative. This material is critical for industries requiring long-term protection against biological degradation in harsh environments. Key industrial users include manufacturers of treated lumber, marine timbers, and specialized agricultural formulations where microbial and fungal resistance is paramount.

Application

• Wood Preservation: Acts as a key component in chromated copper arsenate (CCA) formulations for pressure-treated lumber, protecting against rot, decay, and insect damage.
• Agricultural Fungicide: Used in the formulation of specialized fungicides for controlling certain crop diseases, though its use is highly regulated.
• Marine Timber Treatment: Provides durable protection for pilings, docks, and other marine structures exposed to saltwater and marine borers.
• Industrial Biocide: Employed in certain industrial processes and materials where microbial growth must be prevented.
• Research & Development: Serves as a precursor or reference standard in chemical research, material science, and environmental studies.
• Specialty Pigments: Used historically and in niche applications for the production of certain green and blue pigments.

Basic Information

Product Name	Copper Arsenate
CAS No.	13478-34-7
Molecular Formula	AsCuHO4 (Common representation for basic copper arsenate)
Molecular Weight	187.47 g/mol (for CuHAsO4)
Synonyms	Basic Copper Arsenate; Copper Orthoarsenate; Cupric Arsenate; Copper(II) Arsenate; Arsenic Acid, Copper Salt; Scheele's Green (historical); CCA Component (Chromated Copper Arsenate); CI 77416 (historical pigment index)
EINECS	Contact for details

Quality Control

Our Copper Arsenate is manufactured under strict process controls to ensure batch-to-batch consistency and reliability. Quality is verified through rigorous analytical testing, including assay for active content and limits for key impurities. A Certificate of Analysis (COA) detailing purity, heavy metal content, and other critical parameters is provided with each shipment to ensure compliance with your specifications and relevant handling guidelines.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong acids and reducing agents. Keep container tightly sealed when not in use to minimize exposure to moisture.

Specification

Item	Specification
Appearance	Green to blue-green powder
Identification (IR/XRD)	Conforms to standard
Assay (as CuHAsO4)	≥ 95.0%
Water Solubility	Practically insoluble
Loss on Drying	≤ 2.0%
Arsenic (As) Content	Contact for details
Copper (Cu) Content	Contact for details
Heavy Metals (as Pb)	≤ 50 ppm

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