potassium dichromate

nounChemistry.

an orange-red, crystalline, water-soluble, poisonous powder, K2Cr2O7, used chiefly in dyeing, photography, and as a laboratory reagent.

Origin of potassium dichromate

First recorded in 1880–85

Also called potassium bichromate.

Words Nearby potassium dichromate

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use potassium dichromate in a sentence

On boiling it with copperas it becomes violet, while on boiling with potassium dichromate it changes to a yellowish brown.
Scientific American Supplement, No. 363, December 16, 1882 | Various
potassium dichromate, 3/8 oz.; hot water, 1/2 pint; dissolve, and add all together.
Scientific American, Vol. XXXIX.No. 6. [New Series.], August 10, 1878 | Various
potassium dichromate might therefore be called potassium pyrochromate.
An Elementary Study of Chemistry | William McPherson
Another patent, taken out in 1879 by Heinzerling, specified the use of potassium dichromate and alum.
Animal Proteins | Hugh Garner Bennett
This is performed in a solution of potassium dichromate rendered alkaline with ammonia.
Photogravure | Henry R. Blaney

British Dictionary definitions for potassium dichromate

potassium dichromate

noun

an orange-red crystalline soluble solid substance that is a good oxidizing agent and is used in making chrome pigments and as a bleaching agent. Formula: K 2 Cr 2 O 7

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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