Usted buscó: oxidationsfarvestoffer (Danés - Inglés)

- identifikation og semikvantitativ bestemmelse af visse oxidationsfarvestoffer i haarplejemidler ,
- identification and semi-quantitative determination of certain oxidation colorants in hair dyes,

et andet problem er, at der i et middel kan ske kemiske ændringer under brugen, som det f.eks. er tilfældet med oxidationsfarvestoffer, eller at absorptionsgraden af en bestanddel i et kosmetisk middel kan ændres af de anvendte opløsningsmidler og olier.
another problem is that a product can undergo chemical modification during use, as for example with the oxidizing hair dyes, or that the degree of absorption of the ingredient of cosmetic products may be altered by the solvents and oils used.

de noedvendige analysemetoder boer fastlaegges hurtigst muligt , og eftersom foerste etape i bestraebelserne for at naa dette maal er gennemfoert ved fastlaeggelsen af en raekke metoder i kommissionens direktiv 80/1335/eoef ( 3 ) , bestaar anden etape i fastlaeggelse af metoder til identifikation af oxiderende stoffer og bestemmelse af hydrogenperoxid i haarplejemidler , identifikation og semikvantitativ bestemmelse af visse oxidationsfarvestoffer i haarplejemidler , identifikation og bestemmelse af nitrit , identifikation og bestemmelse af frit formaldehyd , bestemmelse af resorcinol i shampoo og haarlotion samt bestemmelse af methanol i forhold til ethanol eller propanol-2 ;
whereas all the necessary methods of analysis should be drawn up as quickly as possible ; whereas, the first step towards the attainment of this objective having already been taken by the definition of certain methods in commission directive 80/1335/eec (3), the second step is to consist in the definition of methods for identification of some oxidizing agents and determination of hydrogen peroxide in cosmetic hair-care products, identification and semi-quantitative determination of certain oxidation colorants in hair dyes, identification and determination of nitrite, identification and determination of free formaldehyde, determination of resorcinol in shampoos and hair lotions, and determination of methanol in relation to ethanol or propan-2-ol;