Physico-chemical properties of niacin, Science

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Important physico-chemical properties of niacin and niacinamide are as follows:

a)  Niacin is a white crystalline solid.

b) While niacin  is sparingly soluble in water, ethanol and glycerol, niacinamide  is readily soluble in water.

c)  Niacin is  fairly  heat  stable  and can withstand  a  temperature of  120°C  for  20 minutes in  acid or alkali. It is one or'the most stable vitamins.

d)  Niacinamide is converted into niacin if heated in strong acid or alkali.

 


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