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| Very soluble |
less than 1 part |
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| Freely soluble |
from 1 to 10 parts |
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| Soluble |
from 10 to 30 parts |
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| Sparingly soluble |
from 30 to 100 parts |
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| Slightly soluble |
from 100 to 1000 parts |
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| Very slightly soluble |
from 1000 to 10,000 parts |
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| Practically insoluble |
more than 10,000 parts |
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Approximate quantity of solvent by volume for one part of soluble by weight. For example, 1g of a very soluble substance dissolves in less than 1ml of solvent. |
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