Konstruksi bahan kimia selulosa eter hidroksipropil metil selulosa hpmc

The finished product of hydroxypropyl methylcellulose is in the form of white powder or white loose fibrous solid, and the particle size passes through an 80-mesh sieve. The different ratios of methoxy content and hydroxypropyl content and different viscosities of the finished products result in different varieties with different performances. It has the characteristics of being soluble in cold water and insoluble in hot water, similar to methylcellulose, and its solubility in organic solvents exceeds its solubility in water. It can be dissolved in anhydrous methanol and ethanol, as well as in chlorinated hydrocarbons such as dichloromethane, trichloroethane, and organic solvents such as acetone, isopropanol dan alkohol diacetone . Ketika dilarutkan dalam air, ia digabungkan dengan molekul air untuk membentuk koloid . stabil untuk asam dan alkali dan tidak akan terpengaruh dalam kisaran pH=2 untuk {{7} meskipun hyd-troams. menghasilkan reaksi kimia kekerasan dengan oksidan .