CAS 10025-73-7 Chromium(III) chloride - Catalysts / Alfa Chemistry

Synonyms

Chromium(III) trichloride

IUPAC Name

Trichlorochromium

Molecular Weight

158.35

Molecular Formula

CrCl3

Canonical SMILES

Cl[Cr](Cl)Cl

InChI

InChI=1S/3ClH.Cr/h3*1H;/q;+3/p-3

InChI Key

QSWDMMVNRMROPK-UHFFFAOYSA-K

Boiling Point

1300 °C

Melting Point

1152 °C

Purity

99%+

Density

2.87 g/mL at 25 °C (lit.)

Solubility

Insoluble in water

Appearance

Violet flakes

Storage

Store below +30 °C

Color Form

Violet, lustrous, hexagonal, crystalline scales;Red-violet crystals;Bright purple plates;

Complexity

Covalently-Bonded Unit Count

Decomposition

When heated to decomposition it emits toxic fumes of Cl-;1300 °C;

EC Number

256-852-0

Exact Mass

156.847063

H-Bond Acceptor

Heavy Atom Count

ICSC Number

1316

MDL Number

MFCD00010948

Monoisotopic Mass

156.847063

Other Experimental

Produces violet (dilute) or green (concentrated) acid solutions;Greasy feel; also exists in hygroscopic, soluble, peach-blossom colored form;Greenish-black or violet deliquescent crystals, depending on whether chlorine is coordinated with the chromium. Density: 1.76; MP: 83 deg C. Soluble in water and alcohol; insoluble in ether /Chromium chloride hexahydrate/;pH = 2.61 at 20 deg C at a concentration of 50/g/L /Chromium chloride hexahydrate/;Chromium forms a number of compounds in various oxidation states. Those of 2+ (chromous), 3+ (chromic) and 6+ (chromates) are the most important /Chromium, alloys and cmpd/;Cr(III) is the most stable oxidation state of chromium & is always present as a coordination complex /Trivalent chromium/;Slightly soluble in water. /Trivalent chromium/;

RTECS Number

GB5425000

Stability

Stable under recommended storage conditions;Extremely unstable;

Topological Polar Surface Area

0 Å²

UNII

Z310X5O5RP

UN Number

1760

Application

Chromium(III) chloride, known for its highly corrosive properties and distinctive blue to greenish-black crystalline form, serves multiple purposes across various industries. It is primarily used in chromium plating, acting as a key component in the textile industry as a mordant, facilitating the tanning process in leather production, and in waterproofing applications. Additionally, it plays a crucial role as a catalyst in polymerizing olefins. Beyond industrial applications, Chromium(III) chloride is used as a dietary supplement, approved in the European Union for specific nutritional purposes and found in food supplements. Its uses extend to the manufacture of pure chromium, other compounds, and in chromizing metals. Despite its insolubility in water, its interactions with reducing agents enable it to form soluble complexes. Notably, Chromium(III) chloride is integral to electroplating processes involving trivalent chromium, further underscoring its widespread industrial utility.

December 12, 2024

Essential Catalyst for Polymerization in Industrial Research

Chromium(III) chloride from Alfa Chemistry proved invaluable in our industrial research. We used it as a catalyst for polymerizing olefins, enhancing efficiency significantly. Its stability under controlled conditions was crucial, despite its corrosive nature.