Preparing and using potassium dichromate(VI) indicator papers
Refer to CLEAPSS Hazcard and CLEAPSS Recipe Book.
Potassium dichromate(VI) indicator papers can be made in a similar way to cobalt chloride indicator papers.
Use a 0.1 M solution of potassium dichromate(VI), mixed with an equal volume of 1 M sulfuric acid.
Potassium dichromate is VERY TOXIC and DANGEROUS FOR THE ENVIRONMENT and May cause sensitisation. The indicator papers should be handled as little as possible and hands washed after use.
1 M sulfuric acid is an IRRITANT. One drop of the mixed solution on a piece of filter paper will allow users to avoid direct contact.
Health and safety checked November 2007
Page last updated on 16 December 2011