| polyethylene glycol 400 |
A polymer consisting of ethylene oxide and water. The formula is H(OCH2CH2)nOH, in which the value of n is from 8.2 to 9.1. It is used as a water-soluble ointment base.
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| polyethylene glycol 4000 |
A polymer consisting of ethylene oxide and water. The formula is H(OCH2CH2)nOH, in which the value of n is from 68 to 84. It is used as a water-soluble ointment base.
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