Description

Technical specifications: marketing5 at greatchem. com 1) Methoxyl content: *8.0 - *0.0% . 2) Hydroxypropoxyl content: 7.0 - *2.0% 3) Gelation temperature: *8.0 - *4.0°C 4) Loss or drying: ≤5.0% 5) Burnt residues: ≤1.0% 6) PH value (1% solution at *5°C): 4.0 - 8.0 7) Viscosity (2% solution at *0°C): 5 - **0, **0mPa.s Physical properties: 1) Appearance: HPMC is a white or light gray pellet or fibril power with odorless and tasteless 2) Solubility: hardly dissolves in waterless ethanol, aether or acetone, expands as to clear or slightly muddy colloid solution in cold water; it can dissolve in some organic solvents or some water-organic components 3) Pellet: **0 screen passable rate is over *8.5%, *0 screen passable rate is **0% Dissolving process: HPMC will agglomerate when directly added to water and then dissolve. In this way it dissolves very slow and hard. Suggested methods as followers: 1) In hot water: add water in container to 1/3 or 2/3 of its content, heated to over *0°C, because HPMC doesn&#**9;t dissolve in hot water, it uniformly disperses in hot water; add cool water or ice to the residual content, stir and cool down the mixture 2) Powder combination: mix HPMC with identical volume of other powder, disperses them sufficiently then add water to the mixture result HPMC dissolves without agglomeration 3) Organic solvent wet: dispersed or wet with organic solvents, such as ethanol, glycol or oil, then add water can cause HPMC completely dissolves Applications: HPMC is mainly used as dispersant in the production of PVC and as thickener, stabilizer, emulsifier, excipient, water retention agent, film-forming agent in petrochemical, building materials, agrochemical, ink, printing and dyeing of textile, paper making and cosmetics. Transportation and storage: 1) Keep dry where good ventilated 2) Do not wet and keep away from sunshine during transportation