Description

Chromate CAS NO 11104-59-9 refers to a class of chemical compounds containing the chromate anion (CrO₄²⁻), which are critical for their strong oxidizing properties and ability to form stable complexes. These compounds are essential in industrial processes where corrosion inhibition, color production, and chemical conversion are required. Key industries that rely on chromates include metal finishing, pigments and dyes, wood preservation, and water treatment.

Application

• Metal Finishing & Conversion Coatings: Used in chromate conversion coatings (e.g., chromating) to provide corrosion resistance and improve paint adhesion on aluminum, zinc, and other metals.
• Pigments & Dyes: Serves as a key component in the manufacture of chrome yellow, chrome orange, and other inorganic pigments for paints, plastics, and ceramics.
• Corrosion Inhibitors: Applied in cooling water systems, antifreeze formulations, and metalworking fluids to protect ferrous and non-ferrous metals from oxidation.
• Wood Preservation: Used in chromated copper arsenate (CCA) treatments to protect lumber from decay, fungi, and insect damage.
• Chemical Synthesis: Acts as an oxidizing agent and catalyst in various organic synthesis and inorganic chemical production processes.
• Leather Tanning: Employed in chrome tanning processes to stabilize collagen fibers, making leather more durable and water-resistant.

Basic Information

Item	Detail
Product Name	Chromate
CAS No.	11104-59-9
Molecular Formula	CrO₄²⁻ (anion)
Molecular Weight	115.99 g/mol (for CrO₄²⁻)
Synonyms	Chromate ion; Chromate(2-); Chromic acid, ion(2-); Tetraoxochromate(2-); Chromium oxoanion; Chromium tetraoxide; Chromate anion; Dichromate (related compound)
EINECS	Contact for details

Quality Control

Our chromate products are manufactured under strict quality management systems to ensure batch-to-batch consistency and reliability. Quality is verified through comprehensive testing, including assay/purity determination, identification, and analysis of key impurities. A Certificate of Analysis (COA) detailing all test results is provided with each 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 (moisture-sensitive) nature, containers must be kept tightly sealed. Store away from strong acids and organic solvents. Observe all local and international regulations for handling and storage of oxidizing agents.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder or solution
Identification (IR/UV-Vis)	Conforms
Assay (as CrO₄²⁻)	≥ 95.0% - 99.9% (Grade Dependent)
pH (for solutions)	As per grade requirement
Insoluble Matter	≤ 0.1%
Chloride (Cl)	≤ 0.01%
Sulfate (SO₄)	≤ 0.05%
Heavy Metals (as Pb)	≤ 10 ppm

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