I. Introduction According to Article 6 of the REACH Regulation1 „any manufacturer or importer of a substance, either on its own or in one or more preparation(s), in quantities of 1 tonne or more per year shall submit a registration to the Agency.“ In order to enable the use of transitional periods of up to 10 years, relevant substances must be pre-registered by 1 December 2008.2 The determination of the substance name is of fundamental importance in pre-re