Sodium dichromate is often required as an additive to promote oxidation in certain'types'of nitric-based acid baths.
42.
However, since potassium dichromate is a strong oxidizer, numerous alcohol groups can be oxidized by it, producing false positives.
43.
Chromate esters are the key reactive intermediates in the Jones oxidation, the mechanistically related oxidations using pyridinium dichromate or pyridinium chlorochromate.
44.
IIRC, you make it with a 50 / 50 mixture of concentrated sulfuric acid with a saturated solution of sodium dichromate.
45.
At pH 1 ) the hydrogen chromate ion is predominant in dilute solution but the dichromate ion is predominant in more concentrated solutions.
46.
As with other Cr VI compounds, potassium dichromate is carcinogenic and should be handled with gloves and appropriate health and safety protection.
47.
Representative members of this family of reagents include Collins reagent, pyridinium chlorochromate ( PCC ), and pyridinium dichromate ( PDC ).
48.
The black reaction consisted in fixing silver chromate particles to the neurilemma ( the neuron membrane ) by reacting silver nitrate with potassium dichromate.
49.
Ammonium dichromate is sometimes known as " Vesuvian Fire ", because of its use in demonstrations of tabletop " volcanoes ".
50.
It forms yellow, monoclinic crystals; made from ammonium hydroxide and ammonium dichromate; used in photography as a sensitizer for gelatin coatings.
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