ISO/TS 10303-1655:2006 specifies the application module for Chemical substance.
The following are within the scope of ISO/TS 10303-1655:2006:
definition of a substance and its specialisations as physical particle, chemical element, and chemical compound;
definition of the composition of a substance from other substances and their ratios;
a consist-of relationship between a substance and a raw material part;
items within the scope of application module Assembly structure, ISO/TS 10303-1026;
items within the scope of application module Generic material aspects, ISO/TS 10303-1681;
items within the scope of application module Part view definition, ISO/TS 10303-1023;
items within the scope of application module Person organization assignment, ISO/TS 10303-1013.