HPMC E 50 Hydroxypropyl Methyl Cellulose (HPMC)
Physical Analysis
Appearance	White to slightly off-white fibrous or granular powder.
Identification A to E	Conform
Solution appearance	Conform
Methoxy	28.0-30.0%
Hydroxypropoxy	7.0-12.0%
Loss on drying	5.0% Max
Residue on ignition	1.5% Max
pH	5.0-8.0
Apparent viscosity	40-60cps
Particle size	Min. 98% pass through 100 mesh
Heavy Metals
Heavy Metal	≤10ppm
Arsenic	≤3ppm
Lead	≤3ppm
Mercury	≤1ppm
Cadmium	≤1ppm

EipponCell HPMC E 50 is extensively employed in PVC suspension polymerization, where the dispersion system has a direct impact on the quality of the resulting PVC resin, as well as its processing and final products. By incorporating EipponCell HPMC E 50, the thermal stability of the resin can be enhanced, and the particle size distribution can be controlled, thus allowing for the adjustment of PVC density. The optimal amount of HPMC used is typically around 0.025% to 0.03% of the PVC output. When high-quality HPMC is utilized in the preparation of PVC resin, it ensures that the performance of the resin meets international standards. Furthermore, it imparts favorable physical properties, excellent particle characteristics, and exceptional melt rheological behavior to the PVC resin.