Description

Chromic Sulfate Hexahydrate is an inorganic chromium(III) salt widely utilized as a critical precursor and reagent in industrial processes. Its primary value lies in its role as a stable and soluble source of trivalent chromium, essential for applications ranging from metal finishing to catalyst synthesis. This product is particularly vital for manufacturers in the leather tanning, textile dyeing, and pigment production industries, where consistent quality and reliable supply are paramount.

Application

• Leather Tanning Agent: A key chemical for chrome tanning, providing durability, hydrothermal stability, and a distinctive blue hue to finished leather.
• Textile Mordant: Used to fix dyes onto fabrics, particularly wool, ensuring colorfastness and vibrant shades.
• Catalyst Precursor: Serves as a starting material in the synthesis of catalysts for organic reactions and polymerization processes.
• Pigment Manufacturing: Employed in the production of green pigments for paints, ceramics, and plastics.
• Wood Preservation: Acts as a component in formulations designed to protect timber from fungal decay and insect damage.
• Corrosion Inhibitor: Incorporated into surface treatment solutions to form protective conversion coatings on metals like aluminum and zinc.

Basic Information

Product Name	Chromic Sulfate Hexahydrate
CAS No.	15005-90-0
Molecular Formula	Cr2(SO4)3 · 6H2O
Molecular Weight	500.25 g/mol (Hexahydrate)
Synonyms	Chromic Sulfate; Chromium(III) Sulfate Hexahydrate; Basic Chromium Sulfate; Chromium Sesquisulfate; Chromium Sulfate (2:3); Tanners' Chrome; Chrome Tan; Chromitan MS
EINECS	233-253-2

Quality Control

Our Chromic Sulfate Hexahydrate is manufactured under stringent quality management systems. Each batch is analyzed to ensure it meets precise chemical and physical specifications, including chromium oxide (Cr2O3) content, sulfate content, and impurity limits. A comprehensive Certificate of Analysis (COA) documenting purity, heavy metal content, and other critical parameters is provided with every shipment to guarantee traceability and compliance with your technical requirements.

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). This material is hygroscopic (moisture-sensitive) and must be kept in original packaging or a suitable moisture-proof container to prevent caking and degradation. Keep away from strong alkalis and incompatible materials.

Specification

Item	Specification
Appearance	Violet to green crystalline powder
Identification (IR)	Conforms
Assay (as Cr2(SO4)3·6H2O)	≥ 98.0 %
Chromium (as Cr2O3)	≥ 20.5 %
Iron (Fe)	≤ 0.05 %
Chloride (Cl)	≤ 0.01 %
Water Insoluble Matter	≤ 0.5 %
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.