Group VIB - The Chromium Group

Chromium

greek word “color“ compounds are highly colored

• hardening of steel

• coating to protect against corrosion

uses of chromium

Chromium trioxide

“Chromic anhydride“

Chromium trioxide

“Chromic acid“

Chromium trioxide

should not be brought into intimate contact with organic substances, as serious explosions are likely to result

Chromium trioxide

(chromium) as dilute solution- astringent

Chromic oxide

green chromium

Chromic hydroxide

blue chromium

Chromic nitrate

purplish red chromium

Chromic phosphate

bluish-green chromium

Potassium chromate

indicator for titrimetric analysis of Ag compounds

Potassium dichromate

used in treatment of gastric ulcers

Potassium dichromate

used in tanning and bleaching

Molybdenum

compounds are used for determination of phosphates

Tungsten

used as filaments in electric light bulbs

phosphotungstic acid

used as qualitative reagent for alkaloids

Uranyl nitrate

used in treatment of spreading sluggish ulcers

Uranyl nitrate

Used for titrimetric analysis of phosphoric acid