Description

Chromium(III) Sodium Sulfate Dodecahydrate is an inorganic coordination compound primarily used as a versatile source of trivalent chromium. This material is valued for its stability and solubility, making it a key reagent in various industrial and research processes. It is essential for manufacturers and laboratories involved in chemical synthesis, leather tanning, and the production of specialty catalysts and pigments.

Application

• Leather Tanning Agent: A key component in chrome tanning processes to produce durable, high-quality leather.
• Catalyst Precursor: Serves as a starting material for synthesizing catalysts used in organic synthesis and polymerization reactions.
• Laboratory Reagent: Used as a source of trivalent chromium ions for analytical chemistry, research, and development.
• Pigment Manufacturing: Employed in the production of certain green inorganic pigments and colorants.
• Textile Mordant: Acts as a fixing agent for dyes on textile fibers, improving color fastness.
• Wood Preservation: A component in formulations for protecting wood from fungal decay and insects.
• Water Treatment: Used in specific coagulation and precipitation processes in industrial wastewater treatment.
• Electroplating Baths: An additive in specialized electroplating solutions for depositing chromium-containing alloys.

Basic Information

Product Name	Chromium(III) Sodium Sulfate Dodecahydrate
CAS No.	17854-98-7
Molecular Formula	CrNa(SO₄)₂·12H₂O
Molecular Weight	~ 631.21 g/mol
Synonyms	Sodium Chromium(III) Sulfate Dodecahydrate; Chromium Sodium Sulfate; Chromic Sodium Sulfate; Sodium Chromium Alum; Sodium Chrome Alum; Chrome Alum, Sodium Salt; Natriumchrom(III)-sulfat-Dodecahydrat (German); Sulfuric Acid, Chromium Sodium Salt, Dodecahydrate
EINECS	Contact for details

Quality Control

Our Chromium(III) Sodium Sulfate Dodecahydrate is manufactured under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure consistent purity and performance. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profiles, and physical specifications is provided with every shipment to guarantee 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 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	Violet to dark green crystalline powder
Identification (IR)	Conforms
Assay (Cr³⁺ Content)	≥ 98.0 %
pH (5% Solution)	2.5 - 4.0
Water Insoluble Matter	≤ 0.1 %
Chloride (Cl)	≤ 0.01 %
Sulfate (SO₄)	Balance
Heavy Metals (as Pb)	≤ 20 ppm

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