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Procedure:-
· 1-5g of sample is taken in a polenske flask.
· 2-20g glycerol and 2ml conc. NaOH (50%) is added to it.
· 3-It is then heated over flame until clear solution is obtained.
· 4-It is allowed to cool and 90ml boiling distilled water is added.
· 5-4-5 glass beads and 50ml dil. Sulphuric Acid is added to it.
· 6-Distillation is carried out for 18-21 minutes and 110ml distillate is collected.
· 7-It is then cooled for 10 minutes at 15C.
· 8-It is titrated with N/10 NaOH.
Formula used: - R.M Value= (A- B) x N x 11 or (A- B) x 1.1
Where A= Volume in ml of Standard NaOH solution.
B= Volume in ml of Standard NaOH solution for blank.
N= Normality of Standard NaOH solution
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