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Propanediol
C3H8O2 76.09
 1,3-Propanediol;
 1,3-Dihydroxypropane;
 Propane, 1-3-diol;
 Trimethylene glycol [504-63-2]

BRIEFING

 Propanediol. This proposal is based on the version of the monograph official as of May 1, 2020. On the basis of comments received and supporting data, it is proposed to change the suitability requirement for Resolution in the Assay from “NLT 2.0” to “NLT 1.5”.

 Additionally, minor editorial changes have been made to update the monograph to current USP style.

 (SE: P. Zhang)

 Case ID—SUB-347

USP REFERENCE STANDARDS FOR PURCHASE

USP 1,3-Propanediol RS
USP Propylene Glycol RS
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