Water retention rate is the measure of how much water can be retained in a material. The key difference between carboxymethyl cellulose and hydroxypropyl methylcellulose is that carboxymethyl cellulose has a lower water retention rate, whereas hydroxypropyl methylcellulose has a higher water retention rate when compared in same amounts.
The following infographic presents the difference between carboxymethyl cellulose and hydroxypropyl methylcellulose in tabular form.
Summary – HPMC vs CMC
Carboxymethyl Cellulose and Hydroxypropyl Methyl Cellulose are derivatives of cellulose having differences in water retention rates. The key difference between carboxymethyl cellulose and hydroxypropyl methylcellulose is that carboxymethyl cellulose has a lower water retention rate, whereas hydroxypropyl methylcellulose has a higher water retention rate when compared in same amounts.
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