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Poloxamer
HO(C2H4O)a(C3H6O)b(C2H4O)aH Oxirane, methyl-, polymer with oxirane;
 α-Hydro-ω-hydroxypoly(oxyethylene)a-poly(oxypropylene)b-poly(oxyethylene)a block copolymer, in which a and b have the values shown in the following table:
Polyethylene-polypropylene glycol [9003-11-6]

DEFINITION

Poloxamer is a synthetic block copolymer of ethylene oxide and propylene oxide. It is available in several types, conforming to the requirements shown in the following table.

USP REFERENCE STANDARDS FOR PURCHASE

USP Poloxamer Liquid RS
USP Poloxamer Solid RS
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