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|Column 1||Column 2|
|Extraction solvent (see note 1)||Detailed description of extraction solvent|
The extraction solvents listed in Column 1 above shall satisfy the following general purity criteria–
subject to sub-paragraph (b) below they shall not contain a toxicologically dangerous amount of any element or substance;
they shall not contain more than 1 mg/kg of, respectively, arsenic or lead.
The combined use of Hexane and Ethylmethylketone is not permitted.
3. Butyl acetate
4. Ethyl acetate
6. Carbon Dioxide
8. Nitrous Oxide
11. Hexane (see note 2)
|the commercial product consisting essentially of acyclic saturated hydrocarbons containing six carbon atoms and distilling between 64°C and 70°C|
12. Methyl acetate
13. Ethylmethylketone (see note 2)
|containing not more than 50 mg/kg of n-Hexane|
15. Diethyl ether