Description

Stannous Chromate CAS NO 38455-77-5 is an inorganic compound primarily recognized for its role as a corrosion-inhibiting pigment. This material is valued for its ability to provide effective passivation on metal substrates, particularly in demanding environments. It is a critical component for formulators and manufacturers in the protective coatings, primers, and specialty chemical industries seeking to enhance product longevity and performance.

Application

• Corrosion-Inhibiting Primers: A key active pigment in primers for steel, aluminum, and other metal alloys to prevent oxidation and rust.
• Marine and Industrial Coatings: Used in paint formulations for ships, offshore structures, and industrial equipment exposed to harsh, corrosive conditions.
• Aerospace Finishes: Incorporated into coating systems for aircraft components where weight-saving aluminum alloys require superior corrosion protection.
• Automotive Underbody Coatings: Enhances the durability of protective layers applied to vehicle chassis and undercarriages.
• Pigment for Ceramics and Glass: Can be utilized as a colorant or modifying agent in the production of specialty ceramics and colored glass.
• Research & Development: Serves as a precursor or reagent in chemical synthesis and materials science research for developing new inorganic compounds.

Basic Information

Product Name	Stannous Chromate
CAS No.	38455-77-5
Molecular Formula	CrSnO4 (often represented as SnCrO4)
Molecular Weight	234.69 g/mol
Synonyms	Tin(II) Chromate; Chromic acid, tin(2+) salt (1:1); Stannous Chromate(VI); Tin Chromate; SnCrO4; Chromate de stanneux (French); Zinn(II)-chromat (German)
EINECS	Contact for details

Quality Control

Our Stannous Chromate is manufactured under controlled conditions to ensure batch-to-batch consistency and performance reliability. Quality is verified through a series of analytical tests including assay, impurity profiling, and physical characterization. A Certificate of Analysis (COA) detailing purity, heavy metal content, and other critical parameters 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 nature as a strong oxidizer, keep separate from combustible and reducing agents. Recommended storage temperature: 15-25°C.

Specification

Item	Specification
Appearance	Yellow to brown powder
Identification (IR)	Conforms
Assay (SnCrO4)	≥ 95.0 %
Tin (Sn) Content	≥ 48.0 %
Chromium (Cr) Content	≥ 20.0 %
Loss on Drying	≤ 2.0 %
Water Insoluble Matter	≤ 1.0 %
Heavy Metals (as Pb)	≤ 50 ppm

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