Chromium chloride extra pure
Description
Chromium chloride extra pure refers to high-purity chromium(III) chloride (CrCl₃), an inorganic compound available as anhydrous violet crystals or hydrates like the dark green hexahydrate CrCl₃·6H₂O. It has a molecular weight of 158.36 g/mol (anhydrous), density of 2.87 g/cm³, melting point of 1152°C, and decomposes at 1300°C. The crystal structure is layered rhombohedral (YCl₃ type), with Cr³⁺ in octahedral sites amid Cl⁻ close-packed layers, enabling easy cleavage into flakes.
Anhydrous CrCl₃ is sparingly soluble in water but dissolves rapidly with reducing agents like Cr²⁺ or Zn, forming violet or green solutions due to hydration isomers such as [Cr(H₂O)₆]Cl₃ or [CrCl(H₂O)₅]Cl₂·H₂O. 'Extra pure' grades (e.g., 99.99% trace metals basis) minimize impurities for analytical, catalytic, and pigment applications.
It acts as a Lewis acid catalyst in organic synthesis, precursor for pigments, and in chrome tanning. Highly corrosive, hygroscopic, and toxic (irritant to skin/eyes, potential chromium sensitizer), it requires gloves, ventilation, and incompatibility avoidance with strong oxidizers or reducers.
Specifications
| Model No. | N-CH1578 |
|---|
