molecular weight
- Guideline or reference source
- ISO11238 IDMP Data elements and structures for the unique identification and exchange of regulated information on substances
- Definition
- mass of one molecule of a homogenous substance or the average mass of molecules that comprise a heterogeneous substance. NOTE The unified atomic mass unit is the unit of molecular weight. The type of molecular weight should always be captured. NOTE For polymers there are several different types of molecular weight (i.e. weight average, number average etc.).
- Related Term
- molecular fragment
- molecular structure
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