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Ethyl cellulose


Shan State Ethyl Cellulose (EC)


、质量标准: Q/SHD004-2007 1. Quality standard: Q / SHD004-2007

specification
index
project

I

II

(克分子取代度) DS (degree of substitution)

47.5-49.5

49.5-51.0

Loss on drying wt%

3.0

3.0

Burning residue wt%

0.4

0.4

Viscosity mpa.s

102050100200 7 , 10 , 20 , 50 , 100 , 200

Ethoxy content wt%

47.5-49.5

49.5-51.0

Heavy metal ppm

40

40

Physical and chemical properties:

135-155 ℃,假比重 0.3-0.4/ , 相对密度 1.07-1.18 ,熔点 165-185 ℃,不溶于水,可溶于多种有机溶剂, EC 重要特性 1 、不易燃烧 2 、热稳定性好,有优良的热塑性 3 、对日光不变色。 This product is white or light gray fluid powder or granule, odorless and tasteless, softening point 135-155 ℃, false specific gravity 0.3-0.4 /, relative density 1.07-1.18 , melting point 165-185 ℃, insoluble in water, soluble In a variety of organic solvents, EC has important characteristics1 , non-combustible2 , good thermal stability, excellent thermoplasticity3 , and does not change color to sunlight. 、柔韧性好。 4 , good flexibility. 、介电性好。 5 , good dielectric properties. 、有优良的耐碱性,耐弱酸性。 6 , has excellent alkali resistance, weak acid resistance. 、防老化性能好。 7 , good anti-aging performance. 、耐盐、耐寒性、耐吸湿性好。 8. Good resistance to salt, cold and moisture. 、对化学品稳定,长期储存不变质。 9. It is stable to chemicals and will not deteriorate in long-term storage. 10 , Compatible with many resins, good compatibility with all plasticizers. 、在强碱性环境和受热条件下易变色。 11 , easy to change color under strong alkaline environment and heat conditions. Hydrogen compounds are insoluble in organic solvents containing oxygen atoms.

3. Dissolution method:

DS 2.3-2.6 )常用的混合溶剂是芳烃和醇。 Ethyl cellulose ( DS : 2.3-2.6 ) commonly used mixed solvents are aromatic hydrocarbons and alcohols. 60-80% ;醇可用甲醇、乙醇等,用量 20-40% Aromatics can be benzene, toluene, ethylbenzene, xylene, etc., the amount is 60-80% ; alcohols can be methanol, ethanol, etc., the amount is 20-40% .
EC 在搅拌状态下慢慢加入至盛有溶剂的容器内,直至完全润湿溶解为止。 Slowly add the EC to the container containing the solvent with stirring until it is completely wet and dissolved.

Fourth, use:

Ethylcellulose is mainly used as a tablet binder and film coating material due to its water insolubility. It can also be used as a matrix material retarder to prepare various types of sustained-release tablets. It is also used as a mixed material to prepare coatings. Sustained-release preparations and sustained-release pellets; used as encapsulating adjuvants to prepare sustained-release microcapsules, to continuously release the drug effect, to prevent premature action of some water-soluble drugs; and to be used as a dispersant and stabilizer in various pharmaceutical dosage forms , Water-retaining agent, prevent the medicine from becoming damp, and improve the safe storage of tablets.
V. Packaging, transportation and storage:

纸袋包装(内衬聚乙烯编制袋) . 25KG paper bag packaging (lined with polyethylene woven bag) .

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