What is the difference between Hydroxypropyl methyl Cellulose and Hydroxyethyl Cellulose?
1. Different Characteristics: Hydroxypropyl methylcellulose: (HPMC) is white or off- white powder, which belongs to various non-ionic cellulose mixed ethers. It is a semi-synthetic, inactive viscoelastic polymer. Hydroxyethyl cellulose: (HEC) is a white or yellow, odorless and non-toxic fiber or powder solid. It is made by etherification of alkaline cellulose and ethylene oxide (or chlorohydrin). It is […]
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