I had a look into this -and this is definitely a grey area.
Disinfectants for the medical field can be considered as an accessory to a medical device and labelled with a CE-mark awarded by a Notified Body in accordance with the Directive 93/42/EEG.
Disinfectants that are intended to be used for other purposes than in the medical field are called multi-purpose disinfectants and these are considered to be biocides according to the Directive 98/8/EC.