Experiment NO 20 : To determine sulphated ash of Absorbent cotton wool. I.P.
experiment no 20
Questions
1 What is Ash value ?
2 List the types of Ash value?
3. What is the significance of ash value ?
4 What is the limit of sulphated ash of cotton wool as per IP1995
5 What is incineration ?
6 Name four dessicants used in dessicator
7. If sulphated ash value of given sample is more than 0.5 % ww, what does il indicates .
8 What is acid soluble ash value?
9. What is acid insoluble ash value?
10 Draw neat well labelled diagram of dessicator
11. Why it is essential to keep silica crucible in dessicator before weighing?
(Answers)
Q .1 Ans - Ash
Value -
The ash value is the one of the
Cuiteria the one of the culterig to chook & Indentify
quality & purity of drug.
Q .2. Ans⇒ Types of ash value –
1)physical ash value
2) don-physical ash value
Q .3 Ans→ Significane of Ash value -
The Ash value of drug is identified as it is of Sustained or of quality due to
either quality or pimproper collection of Storage this to prove its
Acceptibility
Q .4 Ans - As pes 1996, Sulphaled ash absorbent
Cotton wool should not more than 0.5% w/w...
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