Hydroxypropyl methylcellulose (HPMC)

Hydroxypropyl methylcellulose (HPMC)

CAS Number: 9004-65-3

Molecular Formula: C3H7O*

Molecular Weight: 59.08708

EINECS Number: 618-389-6

Synonyms: hypromellose 2208

Hydroxypropyl methylcellulose (HPMC) is propylene glycol ether of methyl cellulose, hydroxypropyl and methyl combine with anhydrous glucose ring by ether bond. 

Hydroxypropyl methylcellulose (HPMC) is white or pale white cellulose powder or particles.

Hydroxypropyl methylcellulose (HPMC) and other water-soluble high weight compounds use mixture, become transparent, higher viscosity.

Hydroxypropyl methylcellulose (HPMC) is propylene glycol ether of methyl cellulose, hydroxypropyl and methyl combine with anhydrous glucose ring by ether bond. Hydroxypropyl methylcellulose (HPMC) is white or pale white cellulose powder or particles. Hydroxypropyl methylcellulose (HPMC) has different types of products, the methoxy and hydroxypropyl content ratio is different. 

The characteristics of cold water dissolution and hot water insoluble are similar with methyl cellulose. Solubility in organic solvents is superior than water soluble, can be dissolved in anhydrous methanol and ethanol solution, also soluble in chlorinated hydrocarbons and ketones in organic solvents. Soluble in water, its water solution has a surface activity, the formation of the film after drying, heated and cooled, in turn, from the reversible conversion of sol to gel. Can be used alone in the cold drink, also can be used with other emulsifier, stabilizer. The gelation temperature of low viscosity products is higher than high viscosity of products. Its solution is stable at room temperature. 

In recent years, Hydroxypropyl methylcellulose (HPMC) has been widely used in petroleum chemical industry, papermaking, leather, textile printing and dyeing, pharmaceutical, food, cosmetics and other industries, and as the dispersing agent, thickening agent, adhesive, excipient, capsule, oil resistant coating and packing etc.