Ethyl cellulose
An organic matter, it is a white granular or fine powder at room temperature. It has the functions of bonding, filling and film forming.
Used in resin synthetic plastics, coatings, rubber substitutes, inks, insulating materials, also used as adhesives, textile finishing agents, etc., and can also be used as animal feed additives in agriculture and animal husbandry, and used in electronic products and military propellants. glue.
Ethyl cellulose ether
Alias: cellulose ether
Chemical formula: C23H24N6O4
Molecular weight: 448.474
CAS Registry Number: 9004-57-3
Melting point: 240 to 255 ℃
Boiling point: 654.2 ℃ (±55.0 °C at 760 mmHg)
Water-soluble: insoluble
Density: 1.45 g/cm³
Appearance: white granular or fine powder
Flash point: 349.5 ℃ (±31.5 °C)
Application
Used in inks, coatings, adhesives, medicine, cosmetics and food fields, also used as fillers, adhesives, etc.
Physical and chemical properties
1. Properties: White granular or fine powder.
2. Density (g/mL, 20℃): 1.45
3. Relative vapor density (g/mL, air=1): 1.07～1.18
4. Refractive index: 1.47
5. Solubility: soluble in most organic solvents, can be mixed with resins, oil waxes and plasticizers, it has no effect on alkalis and dilute acids, and is insoluble in water.
6. Melting point (ºC): 240～255
7. Vapor pressure: 0.0±2.0 mmHg at 25°C
Application field
Because of its water insolubility, ethyl cellulose is mainly used as a tablet binder and film coating material. It can also be used as a matrix material blocker to prepare various types of matrix sustained-release tablets.
Used as a mixed material to prepare coated sustained-release preparations and sustained-release pellets.
Used as an organic vehicle to prepare electronic pastes.
It is used as encapsulation auxiliary material to prepare slow-release microcapsules, so that the drug effect can be continuously released, and prevent some water-soluble drugs from acting prematurely.
It can also be used as a dispersant, stabilizer, water-retaining agent in various pharmaceutical dosage forms, to prevent the drug from becoming damp and deteriorate, and to enhance the safe storage of tablets.
Ethyl cellulose is widely used in coatings. It can also be used as the basic material of solid lubricants for stamping metal workpieces. In microcircuit printing, ethyl cellulose is used as a vehicle.
In the radio industry, it is used as a high-level insulating material, and as a special film in a protective coating, such as a coating layer for rocket propellant. It can be used as hot-melt adhesives and coatings for cables, papers, textiles, etc., as well as insulation for extrusion lines and toughness enhancers for plastics.
It can also be used for pigment grinding base materials, printing inks, molded plastic powders, explosive fuzes, and vitamin formulations.
Used as a peelable protective layer to prevent corrosion and damage to metal parts before use, and as a peelable paint to protect fragile glassware.
In adhesives, textiles and fibers, medicine and food, and other industries, there are still many uses.
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