Hydroxypropyl Methylcellulose 更新时间：2020-12-12 15:16:07 常用名 羟丙基甲基纤维素 CAS号 9004-65-3 价格 $需询单/1kg 纯度 99.0% 备货期 需询单 库存 现货 产品详情（用途，包装等） Product Name: Hydroxypropyl Methylcellulose Synonyms: HPMC, Cellulose Hydroxypropyl Methyl Ether CAS No.: 9004-65-3 Chemical Structure: n: degree of polymerization; R: -H,-CH3 or CH2CHOHCH3 Carbonization temperature: 280-300℃ Color degration temperature: 190-200℃ Apparent density: 0.50 g/cm3 Specific density: 1.26-1.31 g/cm3 Surface tension: 42-56 dyn/cm (2% aqueous solution) Deion: It is a nonionic cellulose ether, no odor and smell, soluble in cool water, glacial acetic acid, and some organic solvents and water mixtures, not soluble in hot water, ethanol, ether, acetone. Its aqueous solution is of surface activity, high transparency and stability, when heated to certain temperature, the solution becomes cloudy and gelling quickly, however, the solution become clear again after cooling. HPMC has different types varying from its gelling temperature. The solubility is differed from its viscosity, the lower the viscosity, the higher the solubility. However, the solubility in water is not subject to pH value of its aqueous solution. The lower methoxyl content of HPMC, the higher gelling temperature, the lower solubility and surface activity. Dissloving method: -Heat the water to above 85 and slowly add HPMC under slow agitation to gradually form uniform pulp, then cool the solution under agitation until it become transparent. -Heat certain quantity of water (normally one third or two third) to above 85 , slowly add HPMC under slow agitation to gradually form uniform pulp, then add cooling water into solution, stir and cool the solution at about 20℃ to be clear. -Mix HPMC and other powder materials together, then add water and stir. -Add HPMC into ethanol or other solvents to be dispersed, then add water and stir. Specifications: Appearance: White to off-white powder Gelling temperature, deg C:70-90 Methoxyl content, %: 19.0-24.0 Hydroxypropyl content, %: 4.0-12.0 Viscosity, mpa.s@ 20 deg C,2%: 10-200000 Loss on drying, %: 5.0 max. Ash, %: 1.0 max. pH: 4-8 Applications: HPMC is widely used as thickener, binder, surfactant, lubricant, suspension aid, stabilizer, emulsifier, excipient, water retention agent, film-forming agent in PVC processing, construction, coating and paints, food, pharmaceuticals, cosmetics etc. Packing: 25kg bag Storage: Store in cool, dry and ventilated place, keep away from sunlight, rain, and dampness. 更多 供应商信息 杭州市对外经济贸易服务有限公司 认证状态： 未认证供应商 电话： 86-13957167880 地址： 16th Floor Huazhe Building, No.1 Huazhe Plaza, Hangzhou 310006 地区： China 联系人： Bright Du 联系人电话： +86-13957167880 邮件： triggerchem@126.com 网址： www.triggerchem.cn 主要市场： Southeast Asia, South America, North America, Ukraine, Russia, Europe 年贸易额： 5000mt 主要合作伙伴： Epoxy composites