Description

Chromium Sulfate is an essential inorganic salt widely utilized for its role as a source of trivalent chromium ions. This compound is critical in industrial processes where controlled chromium deposition or chemical modification is required. Key industries that rely on this material include leather tanning, metal finishing, and as a precursor for catalysts and pigments.

Application

• Leather Tanning Agent: A primary component in chrome tanning processes to stabilize and preserve animal hides.
• Metal Surface Treatment: Used in electroplating baths and conversion coatings to enhance corrosion resistance and adhesion.
• Catalyst Precursor: Serves as a starting material for synthesizing various catalysts used in organic synthesis and polymerization.
• Pigment Manufacturing: Acts as a key ingredient in the production of green pigments for ceramics, paints, and inks.
• Wood Preservation: Employed in formulations to protect timber from fungal decay and insect damage.
• Textile Mordant: Used to fix dyes to fabrics, improving color fastness and vibrancy.

Basic Information

Product Name	Chromium Sulfate
CAS No.	14489-25-9
Molecular Formula	Cr2(SO4)3 • xH2O
Molecular Weight	392.16 g/mol (anhydrous basis)
Synonyms	Chromic Sulfate; Chromium(III) Sulfate; Basic Chromium Sulfate; Chromium Sesquisulfate; Tanning Chrome; Chrome Tan; Dichromium Trisulfate; Sulfuric Acid, Chromium(3+) Salt (3:2)
EINECS	238-481-6

Quality Control

Our Chromium Sulfate is manufactured under a stringent quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise chemical and physical specifications. A Certificate of Analysis (COA) documenting purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture, which can lead to caking or degradation.

Specification

Item	Specification
Appearance	Violet or green powder/crystals
Identification (IR)	Conforms
Assay (as Cr2(SO4)3)	≥ 98.0 %
Chloride (Cl)	≤ 0.01 %
Iron (Fe)	≤ 0.005 %
Water Insoluble Matter	≤ 0.1 %
pH (5% Solution)	2.5 - 3.5

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