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sulphonic acid
/ sʌlˈfɒnɪk /
noun
- any of a large group of strong organic acids that contain the group –SO 2 OH and are used in the manufacture of dyes and drugs
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Example Sentences
Alizarin S is a sulphonic acid derivative of alizarin, and since it is much more soluble, it readily yields level colours.
From Project Gutenberg
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