Chromium(III) Trichloride

Chromium Trichloride Basic Properties

• Molecular Formula: Cl3Cr

• Appearance: Purple platy crystal

• Molecular Weight: 158.36

• Melting Point: 1152 °C

• Boiling Point: 1300°C

• Density: 2.87 g/mL at 25 °C(lit.)

• Vapour Pressure: 0.001Pa at 20℃

• Solubility: Slightly soluble in H2O

• Storage Conditions: Store below +30°C

• Package Information: 1kg; 25kg or customized

Chromium Trichloride Key Features

High purity

Chromium trichloride eliminates the influence of water molecules in hydrates, providing a stable and pure chromium(III) source for advanced synthesis.

High stability

Chromium trichloride exhibits high stability and is not easily hydrolyzed, which allows it to maintain its chemical properties in demanding environments, making it suitable for long-term storage and use in moisture-sensitive reaction systems.

Unique solubility and coordination properties

CrCl3 is almost insoluble in water, but it can dissolve and form active complexes in the presence of trace amounts of reducing agents. It can react with a variety of ligands to generate structurally diverse chromium(III) complexes, which can be used in research and production.

Important synthetic precursor

As a key chromium source, this compound is a fundamental raw material for the preparation of many other chromium salts and organometallic compounds (such as diphenylchromium).

Chromium Trichloride Main Applications

Industrial catalysis

In chemical production, chromium trichloride is a key component in the preparation of various catalysts, used in processes such as olefin polymerization, where its catalytic effect contributes to the efficient synthesis of specific polymers.

Materials science

CrCl3 can be used as a starting chromium compound to introduce chromium into metal-organic frameworks, functional materials, and catalyst supports.

Electroplating and surface treatment

In the metal processing industry, this compound can be used for electroplating and passivation of metal surfaces, effectively enhancing the corrosion resistance of materials.

Reagents for teaching and research

Due to their well-defined properties and simple structure, they are suitable for use as teaching experiments and models for studying metal-ligand relationships.

Precautions

1. Chromium trichloride should be stored in a sealed container in a cool, dry, and well-ventilated place, avoiding contact with moisture as it is highly hygroscopic. It is recommended to store it sealed and protected from light at room temperature or below +30°C.

2. Avoid direct contact with strong reducing agents or strong oxidizing agents. Although it is in the chromium(III) form, it may still participate in the reaction under certain conditions. It is recommended to store it in separate areas.

3. Protective gloves, safety glasses, and lab coats should be worn during operation to avoid direct skin or eye contact.

4. Waste liquids and residues should be disposed of in accordance with the regulations for the treatment of hazardous chemicals and should not be dumped indiscriminately.

5. Although CrCl3 is heat-resistant, uncontrolled heating should still be avoided in experiments to maintain the stability of the compound structure.

FAQ

1. Is CrCl₃ soluble in water?

This compound dissolves very slowly in water. Its structure is relatively stable in water, unlike some chromium(III) salts which are readily soluble.

2. What is the difference between chromium trichloride and its hydrates?

Chromium trichloride is a purple crystal, almost insoluble in water, and highly stable. Hydrates, such as CrCl3·6H2O hexahydrate, are dark green to green crystals and readily soluble in water. The anhydrous form is more suitable for scientific research applications requiring strict moisture control.

For more information or to purchase Chromium Trichloride(CrCl3), please feel free to contact us via jomin@wolfabio.com or WhatsApp(+86 18359103607).