White Polymer hydroxypropyl methyl cellulose HPMC
Product introduction
Hydroxypropyl methyl cellulose (HPMC) is a kind of non-ionic cellulose mixed ether. It is a semi-synthetic, inactive, viscoelastic polymer. It is often used in ophthalmology as a lubricant, or as an excipient or excipient in oral medicines. It is common in various commodities.
Physical property
Appearance and Properties: White or quasi-white fibrous or granular powder
Density: 1.39 g/cm 3
Solubility: Almost insoluble in absolute ethanol, ether and acetone; swelling in cold water into a clear or slightly turbid colloidal solution
Stability: Solids are flammable and incompatible with strong oxidants.
Chemical property
1. Appearance: White or similar white powder.
2. Particle size; 100 mesh pass rate is more than 98.5%; 80 mesh pass rate is 100%. Particle sizes of special specifications ranged from 40 to 60 meshes.
3. Carbonization temperature: 280-300 C
4. Discoloration temperature: 190-200 C
5.Solubility: Soluble in water and some solvents.
6. HPMC decreases with the decrease of methoxy content, the increase of gel point, the decrease of water solubility, and the decrease of surface activity.
7. HPMC also has the characteristics of thickening ability, salt-resistant low ash powder, pH stability, water retention, dimensional stability, excellent film-forming ability, and extensive enzyme resistance, dispersibility and cohesion.
Application
This product is used as thickener, dispersant, binder, excipient, oil-resistant coating, filler, emulsifier and stabilizer in textile industry. It is also widely used in synthetic resin, petrochemical industry, ceramics, paper making, leather, medicine, food and cosmetics industries.
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