Hydroxypropyl MethylCellulose (HPMC)
Hydroxypropyl Methyl Cellulose (HPMC) another name is Hypromellose, it is is a natural polymfer cellulose as raw material, made of a series of chemical processing and non-ionic cellulose ether. It is white powder with good water solubility. hpmc have many properties such as thickening, adhesion, dispersing, emulsifying, film, suspended, adsorption, gel, and protective colloid properties of surface activity and maintains moisture function properties .Hydroxypropyl Methyl Cellulose are widely used in construction materials,building materials, coatings industry, synthetic resin, ceramic industry, textile, agriculture, daily chemical and other industries.
COMMON NAME HYDROXYPROPYL METHYL CELLULOSE
ABBREVIATION HPMC
CAS NO. 9004-65-3
STANDARDS COMPLIANT ENTERPRISE STANDARD
CHEMICAL FORMULA R=CH2CH(CH3)OH
Hydroxypropyl Methyl Cellulose (HPMC) 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%.
Appearance White or off-white powder
Methoxy ( % ) 19.0~ 24.0
Hydroxypropoxy ( % ) 4.0 ~ 12.0
pH 5.0~ 7.5
Moisture ( % ) ≤ 5.0
Residue on ignition ( % ) ≤ 5.0
Gelling temperature ( ℃ ) 70~ 90
Particle size min.99% pass through 100 mesh
Hydroxypropyl MethylCellulose (HPMC) Application
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