Description

Chromates CAS NO 13907-45-4 represent a class of chemical compounds containing the chromate anion (CrO₄²⁻), known for their role as corrosion inhibitors and oxidizing agents. These compounds are critical for providing long-term protection to metal substrates in harsh environments, preventing rust and material degradation. They are essential raw materials for manufacturers in the aerospace, automotive, and industrial coating sectors seeking reliable, high-performance solutions.

Application

• Corrosion Inhibitive Pigments: A primary component in primers and coatings for steel structures, automotive parts, and aerospace components to prevent rust.
• Metal Surface Treatment: Used in conversion coatings and passivation processes for aluminum, zinc, and other metals to enhance paint adhesion and corrosion resistance.
• Wood Preservatives: Employed in formulations to protect timber from fungal decay and insect damage, extending the lifespan of outdoor wood structures.
• Oxidizing Agent in Synthesis: Serves as a selective oxidant in various organic synthesis reactions within the fine chemical and pharmaceutical industries.
• Cooling Water Treatment: Acts as an anodic inhibitor in industrial cooling water systems to control scale and protect metal piping from corrosion.
• Drilling Muds: Used in the oil and gas industry as an additive to control fluid viscosity and reduce pipe corrosion.

Basic Information

Product Name	Chromates
CAS No.	13907-45-4
Molecular Formula	CrO₄²⁻ (anion)
Molecular Weight	115.99 g/mol (for CrO₄²⁻)
Synonyms	Chromate(VI); Chromate anion; Chromic acid (H₂CrO₄), ion(2-); Chromium oxide (CrO₄²⁻); Tetraoxochromate(2-); Zinc chromate (common compound); Strontium chromate (common compound); Barium chromate (common compound)
EINECS	Contact for details

Quality Control

Our chromates are produced and tested under a strict quality management system. Each batch is analyzed to ensure it meets precise specifications for chromate content, impurity levels, and physical properties. Certificates of Analysis (COA) are provided with every shipment, detailing results for key parameters such as assay, heavy metal content, and solubility. We adhere to relevant industry and regulatory guidelines to ensure product consistency and performance.

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 reducing agents and organic compounds. Due to its oxidizing nature, keep away from heat and sources of ignition. Recommended storage temperature is 15-25°C.

Specification

Item	Specification
Appearance	Yellow to orange powder or crystalline solid
Identification (IR)	Conforms
Assay (as CrO₄²⁻)	≥ 95.0%
Water Solubility	Tested
Heavy Metals (as Pb)	≤ 20 ppm
Loss on Drying	≤ 1.0%
pH (in solution)	Specified range

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