Description

Chromium Sulfate, Basic, Solid is an inorganic chromium salt widely utilized as a key precursor in the leather tanning and textile dyeing industries. Its primary value lies in its ability to provide a stable source of trivalent chromium, which is essential for forming durable cross-links with collagen fibers. This product is critical for manufacturers and processors in sectors requiring high-quality, consistent inorganic chemicals for surface treatment and coloration processes.

Application

• Leather Tanning Agent: The primary industrial use, where it acts as a chrome tanning agent to convert raw hides into stable, durable leather.
• Textile Mordant: Used to fix dyes onto fabrics, particularly wool, improving color fastness and vibrancy.
• Catalyst Precursor: Serves as a starting material in the synthesis of various catalysts for organic synthesis and polymerization reactions.
• Wood Preservative: An active component in formulations designed to protect wood from fungal decay and insect damage.
• Ceramic Pigment: Imparts green coloration in glasses, glazes, and ceramic bodies.
• Corrosion Inhibitor: Incorporated into surface treatment formulations to provide a protective layer on metals.

Basic Information

Product Name	Chromium Sulfate, Basic, Solid
CAS No.	12336-95-7
Molecular Formula	Cr(OH)SO₄ (Typical representation for basic salt)
Molecular Weight	Varies (Contact for details)
Synonyms	Basic Chromium Sulfate; Chromium(III) Sulfate Basic; Chrome Tanning Salt; Chromic Sulfate Hydroxide; Chromium Hydroxide Sulfate; Tanners' Chrome; BCS
EINECS	235-595-8

Quality Control

Our Chromium Sulfate, Basic, Solid is manufactured under a stringent quality management system. Each batch is tested to ensure it meets precise specifications for chromium oxide (Cr₂O₃) content, basicity, and impurity levels, which are critical for consistent performance in tanning and dyeing applications. Certificates of Analysis (COA) documenting these parameters are provided with every shipment to guarantee traceability and compliance with your process requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, 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 incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Green powder or flakes
Identification (IR)	Conforms
Assay (as Cr₂O₃)	24.0 - 26.0 %
Basicity	30 - 40 %
Iron (Fe)	≤ 0.1 %
Water Insoluble Matter	≤ 0.1 %
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.