HPMC E5 is a low - viscosity hydroxypropyl methylcellulose, and the following is an introduction to it:

Basic Information

• Chemical Name: 2 - Hydroxypropyl methylcellulose.

• CAS Number: 9004 - 65 - 3.

• Appearance: It is a white to off - white cellulose powder or granule.

Physicochemical Properties

• Solubility: It is almost insoluble in anhydrous ethanol, ether, or acetone. It swells in cold water to form a clear or slightly turbid colloidal solution and is insoluble in hot water.

• Viscosity: The viscosity of its 2% aqueous solution at 20℃ is 4.0 - 6.0mPa·s.

Applications

• In the Pharmaceutical Field: It is an emulsifier, coating agent, protective colloid, stabilizer, suspending agent, and thickener. It is mainly used as a binder for tablets. It can be directly dissolved in water to form a viscous colloidal solution for bonding. It is used as a film - coating material, and the formed film is transparent and tough, which can improve the stability of drugs. It can also be used as a skeleton material for sustained - release tablets to delay drug release.

• In Other Fields: In the construction industry, it can be used as a water - retaining agent and retarder for cement mortar, making the mortar pumpable. It is also used in tile adhesives, wall tile joint fillers, etc. In the coating industry, it is used as a thickener, dispersant, and stabilizer.

Storage and Transportation

• Storage Conditions: It should be stored at room temperature, protected from light, moisture - proof, and tightly sealed in a dry place.

• Transportation Conditions: It is transported at room temperature.