ANNEXU.K.DETERMINATION OF DICHLOROMETHANE AND 1,1,1-TRICHLOROETHANE
IDENTIFICATION AND DETERMINATION OF MERCAPTOACETIC ACID IN HAIR-WAVING, HAIR-STRAIGHTENING AND DEPILATORY PRODUCTSU.K.
3.PRINCIPLEU.K.
Mercaptoacetic acid is identified by spot tests and by thin-layer chromatography and is determined by iodometry or gas chromatography.