HPMC

Hydroxypropyl methyl cellulose

HS Code:3912,900

CAS:9004-65-3

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. The aqueous solution of this product has surface activity so that it has emulsification, protective colloids and relative stability. PH Stability: the aqueous solution viscosity of this product is relatively stable in the range of PH 3.0—11.0. As the product is non-ionic, and in the preparation process can be effectively purified by washing with hot water, it has a very low ash content. Hydroxypropyl methylcellulose products can fully meet the standards for use of medicine, food, construction and personal care products.

Specifications

Specification60 (E)65 (F)75 (K)
Gelling temperature (℃)58-6462-6870-90
Methoxy (WT%)28.0-30.027.0-30.019.0-24.0
Hydroxypropoxy (WT%)7.5-12.04.0-7.54.0-12.0
Viscosity(cps)3; 5; 6; 15; 50; 400; 4000; 10000; 20000; 30000;40000; 50000; 100,000 150,000;200,000

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%.