Spot tests

SPOT TESTS

Some feed supplements can be identified by using simple chemical reagents 

Reagents

Reaction

Compounds identified

2.5% Ammonium molybdate solution

Effervescence and no precipitate

Carbonates, viz., calcium carbonate sodium bicarbonate

2.5% Ammonium molybdate solution

Yellow precipitate and no effervescence

Phosphates, viz. disodium phosphate, monosodium phosphate, bone meal

2.5% Ammonium molybdate solution

Effervescence & Yellow precipitate

Dicalcium phosphate

Last modified: Wednesday, 28 March 2012, 5:13 AM