Hydroxypropyl Methyl Cellulose

Hydroxypropyl Methyl Cellulose
(HPMC)
Hydroxypropyl methyl cellulose is a kind of white or slightly yellowish powder, odorless, tasteless, and non-toxic. The product can be dissolved in cold water to form a transparent viscous solution.
PH Stability: the aqueous solution viscosity of this product is relatively stable in the range of PH 3.0—11.0.
HPMC can be used in building materials, coating industry, synthetic resin, ceramic industry, medicine, food, textile, agriculture, daily chemicals and other industries.
Physical and chemical properties
*Particle size:98.5% passes through 100 mesh; 100% passes through 80 mesh.
*Charring temperature: 280-300℃.
*Bulk density: 0.25-0.70 g/cm3 (Usually around 0.5 g/cm3 )
*Real specific gravity:1.26-1.31.
*Browning temperature: 190-200℃.
Surface tension:(2% water solution) 42-56dyn.cm.
*Properties: Dissolved in water and some organic solvent such as ethanol. propyl alcohol. ethylene chloride, the water solution is of surface activity. It is a nonionic surface active agent. Gelation temperature is different for different grades. For example, among 60RT Hydroxypropyl Methylcellulose, 60 is gelation temperature, Namely, 2% water solution will form gelation at 60%.