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Potassium dichromate, K 2 Cr 2 O 7, is a common inorganic chemical reagent, most commonly used as an oxidizing agent in various laboratory and industrial applications. As with all hexavalent chromium compounds, it is acutely and chronically harmful to health. It is a crystalline ionic solid with a very bright, red-orange color.
Predominance diagram for chromate. In aqueous solution, chromate and dichromate anions exist in a chemical equilibrium.. 2 CrO 2− 4 + 2 H + ⇌ Cr 2 O 2− 7 + H 2 O. The predominance diagram shows that the position of the equilibrium depends on both pH and the analytical concentration of chromium.
Other names Potassium dichromate, Chromic acid, (K2CrO4), dipotassium salt ... It is a common laboratory chemical, whereas sodium chromate is important industrially ...
The chromyl chloride test involves heating a sample suspected to contain chlorides with potassium dichromate and concentrated sulfuric acid.If a chloride is present, chromyl chloride forms, its presence being indicated by the formation of red smoke.
Chemical formula Synonyms CAS number; C 7 ClF 5 O: pentafluorobenzoyl chloride: 2251-50-5 C 7 F 5 NS: pentafluorophenyl isothiocyanate: 35923-79-6 C 7 F 14: perfluoromethylcyclohexane: 355-02-2 C 7 HF 5 O: pentafluorobenzaldehyde: 653-37-2 C 7 H 3 IN 2 O 3: nitroxynil: 1689-89-0 C 7 H 3 Br 2 NO: bromoxynil: 1689-84-5 C 7 H 4 ClFO 2-chloro-6 ...
Crotyl groups attached to R. A crotyl group is an organic functional group with the formula RCH 2 CH=CHCH 3. [1] Systematically, it is called a but-2-en-1-yl group and exhibits geometric isomerism, being either cis (Z) or trans (E).
It is a vaguely described chemical, despite many well-defined chromates and dichromates being known. The dark red chromium(VI) oxide CrO 3, the acid anhydride of chromic acid, is sold industrially as "chromic acid". [6] It can be produced by mixing sulfuric acid with dichromate and is a strong oxidizing agent.
Common name Chemical name (Formula) Potash fertilizer: Up to the early 20th century:potassium carbonate (K 2 CO 3). Beginning from the late 19th century: one or more of potassium chloride (KCl), potassium sulfate (K 2 SO 4) or potassium nitrate (KNO 3).