Description

Chromium Potassium Sulfate Dodecahydrate is a high-purity inorganic salt, also known as chrome alum, valued for its role as a source of trivalent chromium ions. This compound is essential in industrial processes requiring precise metal ion control and mordanting properties. It is primarily utilized by manufacturers in the leather tanning, textile dyeing, and metallurgical industries, as well as in research and analytical chemistry.

Application

• Leather Tanning Agent: Acts as a key mordant and tanning agent to stabilize and preserve leather.
• Textile Industry: Used as a mordant in dyeing processes to improve color fastness of fabrics.
• Metallurgy & Surface Treatment: Employed in electroplating baths and as a component in certain corrosion inhibitors.
• Analytical Chemistry: Serves as a reagent and standard in various laboratory analyses and titrations.
• Photography: Historically used in photographic emulsions and photoengraving processes.
• Research & Development: Utilized as a starting material or catalyst in chemical synthesis and material science research.

Basic Information

Product Name	Chromium Potassium Sulfate Dodecahydrate
CAS No.	7788-99-0
Molecular Formula	CrK(SO₄)₂·12H₂O
Molecular Weight	499.39 g/mol
Synonyms	Chrome Alum; Potassium Chromium Sulfate Dodecahydrate; Chromium(III) Potassium Sulfate Dodecahydrate; Potassium Chrome Alum; Alum, Chrome; Kaliumchromsulfat-Dodecahydrat (German); Sulfuric Acid, Chromium Potassium Salt, Dodecahydrate
EINECS	233-401-1

Quality Control

Our Chromium Potassium Sulfate Dodecahydrate is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise chemical and physical specifications. A Certificate of Analysis (COA) detailing 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, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture.

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.