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Chromium (III) Oxide – Cr2O3 – 100 g

Chemical formula: Cr2O3

Synonyms: Chromium sesquioxide, Chromia, Chrome green, Eskolaite (mineral)

Amount: 100 g

Appearance and odour: green powder, without appreciable odour

Grade: technical

Packaging: professional wide necked, white HDPE bottle with blue conical seal cap and tamper ring. Labelled. Bottle and cap are UN approved and reusable.

Description and uses:

The main oxide of chromium. Amphotheric in character, it forms both stable hydrated cations (Cr3+) and chromite (‘CrO2 (-)’) anions.

Fused with potassium hydroxide and a strong oxidiser (KNO3 or KClO3, usually) it is oxidised to chromate (CrO3(2-)), which on leaching and acidifying yields the much desired potassium dichromate (K2Cr2O7).

Aluminothermic reduction of Cr2O3 with aluminium powder proceeds swiftly and yields reguli of pure Cr metal.

Do NOT confuse with chromium trioxide (CrO3 (VI)).

Dispatch: depending on time of receipt of your order, your item will be dispatched either same day or next day at the latest.

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Returns: returns are accepted on condition the item is returned to us, return cost paid by the buyer. For broken or demonstrably faulty items either replacement or refund will be issued.

CAS: 1308-38-9

Price: £6.69


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