醋酸酯化丁二酸氢酯化的纤维素-2-羟基丙基甲基醚

中文名称：醋酸酯化丁二酸氢酯化的纤维素-2-羟基丙基甲基醚

英文名称： Hydroxypropylmethyl cellulose acetate succinate (Mw: 20-100k Da)

CAS： 71138-97-1

分子式： C₁₀H₂₂O₉

分子量：

EINECS号：

中文同义词醋酸酯化丁二酸氢酯化的纤维素-2-羟基丙基甲基醚英文同义词

Hydroxypropylmethyl cellulose acetate succinate (Mw: 20-100k Da)

基本性质

熔点	>203°C (dec.)
LogP	-0.591 (est)
溶解度	Practically insoluble in ethanol (95%), hexane, unbuffered water, and xylene. On the addition of acetone, or a mixture of ethanol (95%) and dichloromethane (1 : 1), a clear or turbid viscous solution is produced. Hypromellose acetate succinate also forms a clear or turbid solution in buffers of pH greater than 4.5 with the rank order of solubility for the various grades increasing with the ratio of acetyl over succinoyl substitution. The exact pH value at which the polymer starts to swell and dissolve depends on the buffer type and ionic strength, although the rank order for the different grades is independent of the buffer used. No solvent has been found to completely dissolve hypromellose acetate succinate polymer; the resulting clear or turbid solutions significantly scatter light in both static and dynamic light scattering experiments, indicating that the polymer may exist as colloids or aggregates. The data is collated from the Shin-Etsu Chemical Co. Ltd and the research work of the authors (R Chen, BC Hancock, and RM Shanker).
形态	Solid
颜色	White to Off-White

海关编码	3912390000

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北京百灵威科技有限公司

产品名称：羟丙基甲基纤维素乙酸酯琥珀酸酯（100毫克）（标准品）

CAS： 71138-97-1

规格： 1EA

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