Chrome alum

Chrome alum

Chromium potassium sulfate dodecahydrate; Potassium chromium(III) sulphate; Chrome potassium alum; Chromium alum

CAS 10141-00-1

Chemical Formula KCr(SO₄)₂•12H₂O

Molecular Weight 499.41 g/mol

Chrome alum, also known as chromium potassium sulfate is a dark purple, crystalline compound traditionally used in leather tanning, textile dyeing, and as a mordant. It has also been used in photographic processes and laboratory settings for its astringent and hardening properties.

Enquire Now Back

Industrial Uses

1. Fabric Solutions 

  • Tanning Agent: Chrome alum is primarily used in leather tanning, where it stabilizes collagen fibers, improves durability, and enhances the water resistance of leather.
  • Color Fixative: It helps fix dyes in the leather, resulting in improved color fastness and even tone across hides.
  • Softening Aid: It contributes to producing softer, suppler leather by modifying the fiber structure during tanning.
  • Mordant in Dyeing: Used as a mordant, Chrome alum fixes dyes to fabrics like wool and silk, ensuring better color retention and intensity.
  • Wool Treatment: It helps shrink-proof and strengthen wool fibers, improving texture and finish in woolen textiles.
  • Color Enhancer: It enhances the brightness and fastness of certain natural dyes, making it valuable in traditional textile dyeing.

2. Performance Chemicals

  • Reagent: Chrome alum is employed as a chemical reagent in analytical tests and redox reactions due to its well-defined composition and oxidation potential.
  • Chromium Source: It serves as a source of chromium ions for experiments or in the preparation of other chromium compounds.

3. Water Treatment

  • Coagulant Aid: Occasionally used in water purification to coagulate suspended particles, though largely replaced by modern alternatives.
  • Color Removal: It can assist in removing color and turbidity from industrial wastewater when used with other treatment agents.

Specifications

Assay ≥ 98% (technical or laboratory grade)
Appearance Dark violet to purple crystalline solid
Odor Odorless
Boiling Point Decomposes before boiling
Melting Point 92–95 °C (decomposes with loss of water of crystallization)
Density ~1.75 g/cm³
Solubility Soluble in water; insoluble in alcohol
Viscosity Not applicable (solid form)
Flash Point Not flammable

Hazard Symbols

Irritants/Sensitisers/Other Hazards

FAQs

1. What is the current price of Chrome alum in India?
The price Chrome alum can vary based on factors such as purity, quantity, etc. For the most accurate and competitive pricing, please contact us at +91.6301 00 6301 directly for a customized quote tailored to your needs.

2. Where can I buy Chrome alum in India?
You can purchase Chrome alum from MULTICHEM, a leading exporter with a reputation for quality and reliability. We provide convenient options for bulk orders and direct shipments across global markets. For more details on how to place an order, please visit our website or contact our sales team.

3. What is the minimum order quantity (MOQ) for Chrome alum?
Our minimum order quantity (MOQ) Chrome alum is designed to cater to both small-scale and large-scale needs. The MOQ depends on the packing size of the product which could range from 25 kg to 250kg.

4. How can I ensure the quality of Chrome alum supplied by Multichem?                      
We adhere to stringent quality control processes to ensure that our products meet the highest standards of purity and effectiveness. They undergo rigorous testing and quality checks to guarantee that they comply with industry specifications. We provide a Certificate of Analysis (CoA) with every shipment to ensure transparency and quality assurance.