Hydroxyethyl methyl cellulose (HEMC)

Hydroxyethyl Methyl cellulose(HEMC)

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1.Product description
Hydroxyethyl Methyl cellulose(HEMC)is a white, yellowish-white or grayish-white powder or granules, it's a cellulose ether which is based on methyl cellulose.Our products produced from the raw material of  high purity cotton.After alkali treatment and special etherification becomes HEMC.HEMC does not contain any animal fats and other active ingredients.



2.Specs & application

Item

Index

Appearance

White or light yellow powder

Methoxy content(%)

22.0-32.0

Ash content(%)

≤3

Particle size(um)

80-120

pH (1%,25°C)

5-8

Viscosity (2%,20℃)

5-200000

Gelation temperature(℃)

60-90

Moisture(%)

≤ 5


Viscosity table

Item

2%mPa·s

Molecular weight

 rangeMw

Molecular

 weight

5LM

3~7

20~30

25

10LM

10~20

40~60

50

20LM

20~30

80~120

100

40LM

40~50

350~560

400

50LM

50~100

1200~1800

1500

3LMR

100~200

3500~5600

4000

8LMR

200~300

8000~12000

10000

1LMH

300~400

12000~18000

15000

2LMH

400~600

18000~25000

20000

4LMH

600~800

35000~56000

40000

7LMH

1000~2500

70000~850000

75000

10WR

2500~3000

90000~120000

100000

15WR

3000~4500

130000180000

150000

20WR

4500~5500

180000230000

200000

25WR

>5500

>230000

>230000


Brief Introduction:
a) Appearance: White to pale yellow color in the state of fibrous or powdery solid,Odorless.
b) Solubility:
- HEMC is soluble in cold water or hot water.
- HEMC is insoluble in the most organic solvents.
- HEMC with surface treatment can disperse in cold water without agglomeration. Normally dissolved slowly. When PH value 8~10, HEMC can quickly dissolve.
c) PH Stability: Within the range of 2-12, the viscosity changes little. PH value out of this range, the viscosity decreases.
d) Property performance:
- HEMC has the property performance of thickening, suspension, dispersion, adhesive, emulsion, filming, water retention, etc.
- Its water retention is better than MC.
- Its viscosity stability, mildew resistance and dispersion is better than HEC.
Application:
HEMC is widely used in the industry of water-base latex paint, construction and building materials, ink printing, oil drilling, etc. 
 
3.HUALIAN HEMC Advantage & Effect:  
1.HEMC plays a role of thickening,water retaining,which is very suitable for water based            painting,construction materials,ink and oil drilling.
2.Good additive for powder materials.Used as gelling agent,water retaining agent of  cement,gypsum.
3.HEMC Used as additive for tooth paste,cosmetics and detergent.
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