NOTE: A test for solubility becomes a test for purity only where a special quantitative test is given in the individual monograph and is an official requirement.
The approximate solubility of the articles of the Pharmacopoeia are given here primarily as information; they are not meant to be applied as tests for identifying materials. However, they may indirectly help in the preliminary evaluation of the integrity of an article. They have been indicated by descriptive terms in the accompanying table and have the following significance with reference to a temperature of 15°C to 30°C.
The approximate solubility of the articles of the Pharmacopoeia are given here primarily as information; they are not meant to be applied as tests for identifying materials. However, they may indirectly help in the preliminary evaluation of the integrity of an article. They have been indicated by descriptive terms in the accompanying table and have the following significance with reference to a temperature of 15°C to 30°C.
Descriptive Item (gm)
|
Parts of Solvent required for Part of Solute (ml)
|
Very soluble
|
Less than 1
|
Freely soluble
|
From 1 to 10
|
Soluble
|
From 10 to 30
|
Sparingly soluble
|
From 30 to 100
|
Slightly soluble
|
From 100 to 1000
|
Very slightly soluble
|
From 1000 to 10,000
|
Practically insoluble or Insoluble
|
10,000 or more
|
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