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Hydroxypropyl Methyl Cellulose

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Origin:Made In China
Category:Chemicals / Coatings, Varnish & Painting
Label:HPMC , Hydroxypropyl Methyl , tylose ether
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Hollyn Chemicals Co.,Limited

Free MemberShan Dong - China
Live Chat:Last Online:05 Dec, 2013

Product Description

Name: Hydroxypropyl Methyl Cellulose

Abbreviation:HPMCMHPC
Alias: Cellulose, 2-hydroxypropyl Methyl ether.

CAS Registry Number: 9004-65-3

Sources:                                                                    
The starting materials for manufacturing HPMC are selected from pure cotton cellulose. The synthetic process incorporates treatment of alkali cellulose with propylene oxide and methylene chloride in an organic solvent-water mixture. The whole process is automatic and monitored by machines. This product does not contain any additives, animal organs, lipids or oils.

Physical properties:

1.  Appearance: HPMC is a nonionic cellulose ether, white grayish-white powder or granuleodorless and flavorless, soluble in cold water, glacial acetic acid, ethanol, methanol and propylene glycol, slightly soluble in acetone depending on the degree of substitutions, practically insoluble in hot water, ethylene glycol and toluene. HPMC is dissolved in a mixture of 10% methanol and 90% methylene chloride to form colloidal solutions.

2.  The solution of HPMC has surface activity, high transparency, and stable performance. When heated at certain temperature, the solution becomes cloudy or forms flocculent gel. However, the solution becomes clear again after cooling. Different types of HPMC have different gelation temperatures. The solubility varies with the viscosity. The lower the viscosity, the higher solubility it has. The different types of HPMC are different in some properties and their solubility in water is not affected by pH.

3.  Particle sizes100% pass rate in 100 mesh

4.  Apparent density0.25-0.70 g/mL (usually about 0.5 g/mL)specific density 1.26-1.31mL.

5.  Color change temperature190-200; Carbonization temperature280-300.

6.  The higher methoxyl content in HPMC, the lower gelation temperature, and the higher solubility in water and surface activity.

7.  HPMC has some other characteristics, for example, thickening property, pH stability, retention of water, excellent film-forming property, good disperse and adhesion ability.

Applications:

1.  Pharmaceutical aidHPMC is used as adhesive, solutizer in tablet, film-forming reagents in pharmaceutical coatingdelayed-release and controlled-release tablets or capsules, thickener and water-binding agent in liquid formulation, component in eye drop.

2.  FoodHPMC is used as a component in adhesives, emulsifiers, stabilizing agents, water-binding agents, excipients and thickeners in various drinks, milks, spices and nutrition foods.

3.  CosmeticHPMC is used as thickeners, adhesives, emulsifiers and film-forming reagents.

4.  Industry: HPMC is used as the dispersing agents in the construction decoration, thickeners, adhesives and water-binding agents .HPMC is used as thickening agents, emulsifiers and stabilizers in the emulsion paints and the water soluble resin paints. HPMC is also used in the polyvinyl chloride preparation process as dispersing agents by the dispersion polymerization method.

 

 

Product specifications:

 

Type 
 Index  

HT-E

HT-F

HT-K

Methoxy %

28.0-30.0

27.0-30.0

19.0-24.0

Hydroxy propyl %

7.0-12.0

4.0-7.5

4.0-12.0

Gelatification temperature/

58-64

62-68

70-90

Loss on drying

5%

pH

4.0-8.0 (1%Solution,25)

Residue on Ignition

1.0 

Heavy metals

≤ 20 ppm

Lead

≤ 10 ppm

 

 

 

* The special specification manufactured by order.

Type

Viscosity SpecificationMPa.S

HT-Ep

5

15

30

50

90

*

4000s

8,000

100000s

HT-Fp

*

*

*

50

*

1,500

4000s

15000s

*

HT-Kp

*

*

*

*

100s

400s

4000s

15000s

100,000

 

 

 

 

 

Safety:

HPMC has no remarkable toxicity. A person utilizing the HPMC should avoid the massive inbreath and contact with skin or eyes. In case of contact with skin, immediately wash with soap and large amounts of water. In case of contact with eyes, immediately flush eyes with large amounts of water for at least 15 minutes. Keep away from fire. Especially avoid forming massive floating dust in the airtight environment.

Avoid direct disposal into the air.

 

Transport and storage:

Store under cool and dry conditions. Avoid direct exposure to sunlight, rain and moisture. Non-hazardous for transport. Keep tightly closed.

 

Package size:

Barrel: Net weight 25kg/Barrel.


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Send Inquiry to this Member

Hollyn Chemicals Co.,Limited

2405 West cenrty road,Mingshui,Zhangqiu ,Shandong,China

Phone:
86-531-83267585
Fax:
86-531-83267585
Contact:
Shirley Fang (Sales manager)
Mobile:
83267585

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