Description

Chromium Potassium Sulfate is an inorganic salt commonly known as chrome alum. This compound is valued for its role as a versatile mordant in the textile industry and as a key component in various industrial processes. It is essential for manufacturers and laboratories requiring a reliable source of trivalent chromium for tanning, electroplating, and chemical synthesis. Global industries from leather processing to specialty chemical production utilize this material for its consistent performance and quality.

Application

• Textile Mordant: Used to fix dyes to fabrics, particularly for wool and silk, improving color fastness and vibrancy.
• Leather Tanning Agent: Serves as a key component in chrome tanning processes to produce durable, stable leather.
• Electroplating & Surface Treatment: Provides a source of chromium for electroplating baths and conversion coatings to enhance corrosion resistance.
• Photographic Industry: Acts as a hardening agent in gelatin emulsions for photographic films and papers.
• Laboratory Reagent: Employed in analytical chemistry and as a starting material for synthesizing other chromium compounds.
• Water Treatment: Used in certain municipal and industrial water treatment processes.

Basic Information

Product Name	Chromium Potassium Sulfate
CAS No.	10141-00-1
Molecular Formula	CrK(SO₄)₂·12H₂O
Molecular Weight	499.39 g/mol (Dodecahydrate)
Synonyms	Potassium Chromium Sulfate; Chrome Alum; Chromium(III) Potassium Sulfate Dodecahydrate; Potassium Chrome Alum; Chromic Potassium Sulfate; Kaliumchromsulfat; Alum, Chrome
EINECS	233-401-5

Quality Control

Our Chromium Potassium Sulfate is manufactured under a strict quality management system. Each batch undergoes rigorous testing for purity, heavy metal content, and other critical parameters to ensure it meets the high standards required for industrial and laboratory use. A Certificate of Analysis (COA) detailing assay, identity, 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, well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept in a dry environment to prevent caking and degradation. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark violet crystals
Identification (IR)	Conforms
Assay (CrK(SO₄)₂·12H₂O)	≥ 98.0 %
pH (5% Solution)	2.5 - 3.5
Insoluble Matter	≤ 0.02 %
Chloride (Cl)	≤ 0.005 %
Iron (Fe)	≤ 0.005 %

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