- Product details
Ethyl cellulose (EC)
I. Introduction
Cellulose part or all of the hydrogen on the hydroxy -substituted product is . Has good toughness , cold resistance and film , white or light gray flowing powder , odorless .
II.Second, product characteristics
Ethyl cellulose is insoluble in water and soluble non-ionic cellulose ether organic solvent.
1 , not combustion .
2 , good thermal stability , excellent thermoplastic .
3 , sunlight does not change color .
4 , good flexibility .
5 , good dielectric properties .
6 , has excellent alkali resistance, weak acid .
7 , a good anti-aging properties.
8 , salt , cold resistance, moisture absorption .
9 , chemicals stability, long-term storage without deterioration.
10, can be compatible with many resins , plasticizers and all have good compatibility .
11 , in strong alkaline environment and heat conditions and easy to change .
III. technical indicators
Industrial Product Specifications
Indicators Project | K-type | N- type | T- type |
Ethoxy content% | 45.0~47.9 | 48.0~49.5 | ≥49.6 |
Viscosity ( 1.4 ethanol toluene , 5%) mpa.s | See Viscosity Specifications | ||
Solubility，% | ≥99.0 | ||
Ash | ≤0.3 | ||
Moisture | ≤3.0 | ||
Heat resistance (120 ℃, 16h) | No yellowing , no lumps , coke | ||
Pharmaceutical grade product specifications
Indicators Project | K-type | N- type | T- type |
Ethoxy content,% | 44.0~47.9 | 48.0~49.5 | 49.6~51.0 |
Viscosity ( 1.4 ethanol toluene , 5%) mpa.s | See the viscosity of the product specification table | ||
Residue on ignition ,% ≤ | 0.4 | ||
Residue on ignition ,% ≤ | 3.0 | ||
Heavy metals ,% ≤ | 0.0020 | ||
Arsenic ,% ≤ | 0.0003 | ||
IV. Viscosity Specifications
Industrial product viscosity specifications
Product Specifications | Viscosity range | Product Specifications | Viscosity range |
6 | 5~8 | 100 | 90~110 |
10 | 8~12 | 110 | 100~120 |
15 | 12~16 | 150 | 135~165 |
20 | 18~24 | 200 | 180~220 |
35 | 31~39 | 250 | 220~270 |
50 | 45~55 | 300 | 270~330 |
70 | 63~77 |
Pharmaceutical grade product viscosity specifications
Viscosity Specifications | Viscosity range mpa.s | Viscosity Specifications | Viscosity range mpa.s |
7 | 5.6~9.6 | 70 | 63~77 |
10 | 9~11 | 100 | 90~110 |
15 | 13.5~16.5 | 150 | 135~165 |
20 | 18~22 | 200 | 180~220 |
30 | 27~33 | 250 | 225~275 |
50 | 45~55 | 300 | 270~330 |
V. Application
1 .. industrial grade ethyl cellulose
For a variety of paints, surface coatings such as metal , paper products and paints, rubber coating , hot melt coating and the integrated circuit ;
Used in inks, such as magnetic ink , gravure and flexographic printing inks ;
Hardy material used ; for specialty plastics and special precipitation, such as rocket propellant coated with ;
Cables for insulation materials and coatings ;
A polymer dispersant for suspension polymerization ;
For carbide and ceramic adhesives ;
Used in the textile industry for printing paste and so on.
Two pharmaceutical grade ethyl cellulose (EC)
For tablets and film-coated pressure-sensitive adhesive materials ;
Blockers for reinforcing materials , preparation of various types of Sustained Release Tablets ;
Preparation of hybrid materials for coated slow-release formulations , sustained release pellets ;
For vitamin tablets, mineral tablets adhesives, release agent and moisture agent
VI, dissolution method
cellulose (DS: 2.3 ~ 2.6) is the most commonly used aromatic hydrocarbons and a mixed solvent of an alcohol . Aromatic hydrocarbons available as benzene, toluene, ethylbenzene , xylene and the like , an amount of 60 to 80% ; alcohol may be methanol, ethanol and the like , in an amount of 20 to 40 %. Within the EC was slowly added under stirring to a container filled with solvent , dissolved until completely wetted .
VII.Packing
Drum , 20kg / barrel , pay attention to moisture .