Ethyl Cellulose for Controlled Release Coatings

• CAS No.: 9004-57-3
• Formula: C23h24n6o4
• EINECS: 232-674-9
• Appearance: Powder
• Usage: Coating Auxiliary Agents
• Color: White
• Raw Material: Raw Material
• Viscosity,MPa.S: 6-300
• MOQ: 20kg
• Advantage: Direct Factory Sale
• Inspection: 100% Test Before Delivery
• Sample: 200g Free for Test
• Sample Time: 3 Days After Confirmation
• Transport Package: 20kg/Bag
• Trademark: Honest
• Origin: Sicuan
• HS Code: 39123900

Product Description

                                                     
Product Description

Name: Ethyl Cellulose
Abbreviation: EC
Structural formula:

In the formula , n stands for degree of polymerization and R for -H or -C2H5 .

Characteristics:

 

Ethyl cellulose has been used as a taste masking coating material for tablets and granules, as a tablet binder, in the preparation of microcapsules and microspheres, and most importantly as a film/matrix forming material for controlled release formulations.

 

Technical requirements
1 .    Appearance: White or even yellowing powder or grains , having no smell or taste .
2 .   Technical Index

Table 1
 

Item	Index
	K type	N type	T type
Content of ethoxy, %	45.0~47.9	48.0~49.5	49.6~51.0
Viscosity, mPas	Conform to the requirements of table 2
Residue on ignition, %	0.4 Max
Loss on drying %	3.0 Max
Heavy metal ppm	20 Max
Bacterium	1000cfu/gram Max
Mold	100cfu/gram Max

3 .Viscosity Specification

Table 2
 

Level	Specific range	Level	Specific range
6	5 0~8 0	70	62~74
10	8 . 1~12	90	80~90
15	13~19	110	100~120
25	20~29	150	135~165
35	30~39	200	180~220
45	40~50	250	221~250
55	51~60	300	250 Min .

Note:  Provided  that  buyers  have  other  requirements ,  negotiation  might  be  necessary  between supplier and buyers.
 

Ethyl Cellulose Used in Pharmaceutical Applicaion 

 

Due to its insolubility in water, ethyl cellulose is mainly used as tablet adhesive and thin film coating material, etc. It is also used as retarding agent for aggregate to make various types of aggregate slow-release pills; as slow-release agent or slow-release pills for compound material when making coat; as microcapsule material to make the medical effect release continuously, and avoid the preaction of water soluble medicine.

It can be too used in any type of medicine as dispersing agent, stabilizer and water retention agent to prevent medicine from absorption and deterioration, enhance the safe storage and stability of pills.

It can even be used as adhesive, slow-release agent and moisture-repellant agent for vitamine pills and mineral pills.

 

Selection guide of products for pharmaceutical:

 

Usage	Applicable type ofthe product	Typical Use Level
Controlled Release Coatings	EN-4,EN-7,EN-10	3-20%
Microencapsulation	EN-20,EN-45,EN-100	10-20%
Solvent-Based Coating for Barrier or Taste Masking Properties	All N Type	1-5%%
Direct Compression Granulation	EN-7, EN-10, EN-100	5-40%
Solvent-Based Granulation	EN-10,EN-20,EN-45	1-6%

 

Package of Ethyl Cellulose
 

It is packed in paper bags, fiberboard boxes or drums lined with PVC bags. Net weight per package: 20kg
 

 

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