Application of hydroxypropyl methyl cellulose in various building
Application of hydroxypropyl methyl cellulose in various building materials products Mortar and insulation Hydroxypropyl methyl cellulose (HPMC) in building mortar plaster mortar use role High water retention can make cement fully hydrated, significantly increase bond strength, and can appropriately improve tensile and shear strength, greatly improve the construction effect, improve work efficiency. Use of hydroxypropyl […]
The basic properties and application of pharmaceutical-grade hydroxypropyl methylcellulose (HPMC)
1. The basic nature of HPMC Hydroxypropyl methylcellulose, English name hydroxypropyl methylcellulose, alias HPMC. Its molecular formula is C8H15O8-(C10Hl8O6) N-C8HL5O8, the molecular weight is about 86000. This product is a semi-synthetic material, which is part methyl and part polyhydroxypropyl ether of cellulose. Two methods can be used to manufacture: one is the appropriate grade of […]
Analysis and testing of hydroxypropyl methyl cellulose
1, the identification of hydroxypropyl methyl cellulose method (1) Take 1.0g of sample, heated water (80~90℃) 100mL, stir continuously, and cool into viscous liquid in an ice bath; Put 2mL of the liquid into the test tube, slowly add 1mL sulfuric acid solution of 0.035% anthrone along the tube wall, and leave for 5min. The […]
What is Hydroxypropyl methyl cellulose HPMC？
Hydroxypropyl methyl cellulose HPMC is a non-ionic cellulose mixed ether in a variety and ionic methyl carboxymethyl cellulose mixed ether, it does not react with heavy metals. One oxygen radicals because of hydroxypropyl methyl cellulose content and the different proportion of hydroxypropyl content and viscosity, became distinct varieties on the performance, for example, high methoxyl […]
Hydroxypropyl methylcellulose, do you understand?
What is the difference between hydroxypropyl methylcellulose (HPMC) with or without S? 1. HPMC is divided into instant type and rapid dispersion type HPMC fast dispersing type is suffixed with the letter S. During the production process, glyoxal should be added. HPMC instant type does not add any letters, such as “100000” is “100000 viscosity […]