Glossary entry (derived from question below)
Italian term or phrase:
cromato di potassio
English translation:
chromate
Italian term
cronato di potassio
4 +3 | chromate | Antonio Volpe Pasini |
Non-PRO (2): Mihaela Petrican, Anthony Green
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Proposed translations
chromate
Il cromato di potassio è il sale di potassio dell'acido cromico, il quale però non esiste in forma libera.
A temperatura ambiente si presenta come un solido giallo inodore. Come tutti i sali in cui il cromo presenta valenza 6, il cromato di potassio è un composto cancerogeno per l'uomo e mutageno, corrosivo, allergenico e pericoloso per l'ambiente.
Acidificando una soluzione di cromato di potassio si ottiene il corrispondente dicromato, arancione in soluzione acquosa ed anch'esso molto tossico; la reazione è poi reversibile, secondo l'equilibrio:
2 CrO42- + 2 H3O+ → Cr2O72- + 3 H2O
Estratto da "http://it.wikipedia.org/wiki/Cromato_di_potassio"
Categorie: Stub chimica | Sali di potassio | Cromati
potassium chromate
Synonyms: Chromic acid, dipotassium salt; dipotassium chromate; bipotassium chromate
CAS No.: 7789-00-6
Molecular Weight: 194.19
Chemical Formula: K2CrO4
Product Codes:
J.T. Baker: 3058
Mallinckrodt: 6870
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