Medium |
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| calcium salts, aqueous solution * |
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| carbon disulphide |
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| carbon tetrachloride |
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| caustic potash solution |
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| caustic soda lye |
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| chloroacetic acid |
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| chlorobenzene |
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| chlorodiphenyls |
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| chloroform |
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| chrome salts, aqueous solution * |
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| chromic acid |
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| citric acid, aqueous solution |
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| cresols |
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| crude oil |
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| cyclohexane |
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| cyclohexanol |
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| cyclohexanone |
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* Salts are:
nitrates, nitrites, sulphates, sulphides, chlorides, acetates, tartrates, cyanides, phosphates, oxalates, etc.
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