Description

Basic Chromium Sulphate is an inorganic chromium salt widely used as a primary tanning agent in the leather industry. Its importance lies in its ability to efficiently convert raw hides into stable, durable leather with excellent hydrothermal stability and a fine, tight grain. This compound is essential for manufacturers in the leather tanning, textile mordanting, and metal surface treatment sectors. The product is supplied as a consistent, high-quality material to ensure reliable performance in industrial processes.

Application

• Leather Tanning (Chrome Tanning): The primary application, where it cross-links collagen fibers to produce stable, supple, and water-resistant leather for footwear, upholstery, and garments.
• Textile Mordant: Used to fix dyes onto fabrics, particularly wool and silk, improving color fastness and brilliance.
• Metal Surface Treatment: Acts as a corrosion inhibitor and primer in conversion coatings for aluminum, zinc, and steel surfaces.
• Catalyst & Chemical Synthesis: Serves as a catalyst or precursor in various organic synthesis and inorganic chemical manufacturing processes.
• Wood Preservation: Used in formulations to protect wood from fungal decay and insect damage.
• Pigment Manufacturing: A key raw material in the production of certain green pigments and ceramic glazes.

Basic Information

Product Name	Basic Chromium Sulphate
CAS No.	129039-96-9
Molecular Formula	Cr(OH)SO₄ (typical representation for basic salt)
Molecular Weight	Contact for details (varies with basicity)
Synonyms	Chrome Tan; Chromium(III) Hydroxide Sulphate; Basic Chromic Sulfate; Chromium Tanning Agent; Tanners' Chrome; Chromium Salt Basic; Chromium Hydroxysulfate
EINECS	Contact for details

Quality Control

Our Basic Chromium Sulphate is manufactured under a stringent quality management system. Each batch undergoes rigorous testing for critical parameters including chromium oxide (Cr₂O₃) content, basicity, and impurity levels to ensure consistency and performance for industrial applications. Certificates of Analysis (COA) are provided with every shipment and are available upon request.

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 product is hygroscopic (moisture-sensitive) and must be kept in original packaging away from sources of moisture to prevent caking and maintain efficacy.

Specification

Item	Specification
Appearance	Green powder or granules
Chromium Oxide (Cr₂O₃) Content	Contact for details
Basicity	Contact for details
Identification (IR)	Conforms
Assay	Contact for details
Insolubles	≤ 0.1%
Iron (Fe)	≤ 0.01%
pH (10% solution)	2.5 - 3.5

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