Chemistry of Redispersible Polymer Powder
October 30th 2024
Hydroxypropyl MethylCellulose (HPMC) can only be dissolved in organic solvents if they are polar and contain a higher percentage. This solubility is independent of whether the organic solvents have water. Compared to alternative substitutes, HPMC exhibits superior solubility in organic solvents. This section details the solubility of HPMC in specific organic solvents, such as IPA (isopropyl alcohol) or ethanol.
– Is HPMC soluble in IPA? Yes, it is.
– Is HPMC soluble in ethanol? Yes, it is, but insoluble in anhydrous ethanol. HPMC demonstrates good solubility in higher concentrations of ethanol or isopropyl alcohol.
Hand sanitizer gel typically comprises less than 40% water and more than 60% alcohol, which is used to prevent diseases and eliminate bacteria. HPMC is utilized in hand sanitizer formulations as a detergent thickener to increase viscosity.
Dissolution Method of Hydroxypropyl MethylCellulose in Water/Alcohol Mixture:
1. Place ethanol or isopropanol in a container. Slowly add HPMC powder or another detergent thickener while stirring with a mixer.
2. Continue stirring until a homogeneous suspension is achieved.
3. Slowly add cold water to facilitate dissolution.
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