Page 131 - Feed Lab

Suguna Management System Ver 1.0 / SOP / FQL / P2 - 42 Page 1 of 1

42. Estimation of sodium bicarbonate assay

SCOPE REAGENTS
The estimate of purity for Sodium bicarbonate F0.5N H SO - 13.6 ml of Con.Sulphuric acid in
4
2
1000 ml of distilled water.
INTRODUCTION
FMethyl orange indicator solution
It is white crystalline powder or small, opaque
monoclinic crystals. It is odour less and saline in taste. It
PROCEDURE
is freely soluble in water, partially insoluble in alcohol
1. Weigh accurately about 1.0g of sample in 250ml
conical flask
APPARATUS
FConical Flask 250ml 2. Add 20 ml of distilled water and few drops of
Methyl orange indicator
FBurette, 10ml
3. Then titrate with 0.5 N H SO .
2 4
Note: Each ml of 0.5 N H SO is equivalent to 0.042 g
2
4
of NaHCO .
3

CALCULATION

TV X N.of H SO X 0.042 X 100
2
4
SBC Purity % = ------------------------------------------------------------
Sample Weight, g

Prepared by : Approved by :
119 Director - Technical