What is the EINECS landing number

European inventory of existing commercial chemical substances 1 the existing European catalogue of commercial chemicals (EINECS number) is a set of registration numbers given to each chemical substance used for commercial purposes in the European Union between 1 July 1971 and 18 September 1981 The system was created under the Dangerous Substances Directive 67 / 548 / EEC The directive stipulates that the EINECS number must be indicated on the label and package of dangerous goods Since September 19, 1981, the list has been replaced by the European list of declared chemical substances (eliincs) and all the "new" substances entering the European market will be assigned an eliincs number upon notification to the European Commission Elincs number must be printed on the package and label Now people usually call the obsolete "EINECS / elincs number" as EC number (ec-no or EC number), but it will be confused with EC number of enzyme At present, 100196 substances are registered in EINECS The EINECS number is a 7-digit number with the style of 2xx-xxx-x or 3xx-xxx-x, starting from 200-001-8 Elincs number is a 7-digit number with the style of 4xx-xxx-x, starting from 400-010-9 The EINECS / elincs / EC number can be written in the following format: among nnn-nnn-r 123-456-0, R is a check number and N is a basic number The check number r can be obtained from the following equation: 1n + 2n + 3N + 4N + 5N + 6N r ------------ = q + -- 11 11 where q is a meaningless integer EINECS: http://ecb.jrc.it/existing-chemicals/