The Action Lab In this video the channel’s host demonstrates an ammonium dichromate reaction. This reaction, unlike the classic soda one, is actually dangerous and gives off a good amount of heat.

THE colour reaction between dichromate and diphenylcarbazide in acid medium is the basis of the best method yet devised for the detection and colorimetric estimation of small amounts of chromium.

Image: Sergeant Andy Tosh in Iraq. Pic: Andy Tosh Described as a "deadly poison", sodium dichromate is a known carcinogen. The ground at Qarmat Ali was covered in it, according to the former ...