Product: Hydroxyethyl Methyl Cellulose (HEMC)
CAS NO: 9032-42-2
Properties:
White or off-white powder. It is almost insoluble in hot water, acetone, ethanol, ether and toluene. Soluble in water and some organic solvents, such as the appropriate ratio of ethanol and water, alcohol and water, ethylene dichloride and so on. Solution has surface-active, transparent and stable performance. Solubility in water is not affected by PH value. It is not soluble in hot water but cold water, insoluble in most organic solvents. The surface treated products can disperse but not condense in cold water, dissolved slowly, but can be quickly dissolved by adjusting PH value to 8-10.
Application:
Widely used in water-based latex paint, construction and building materials, printing inks, oil drilling and so on.
Specification:
|
Items
|
Quality
|
|
Methoxyl content,%
|
24.5-28.0
|
|
Hydroxyethoxyl content,%
|
1.5-9.5
|
|
Moisture,%
|
8.0 max.
|
|
Ash,%
|
3.0 max.
|
|
PH
|
5.0-8.5
|
Viscosity specification:
|
Type
|
Viscosity range(mPa.s)
|
Type
|
Viscosity range(mPa.s)
|
|
400
|
300~500
|
20000
|
18000~30000
|
|
800
|
600~900
|
40000
|
30000~50000
|
|
1500
|
1200~1800
|
75000
|
50000~85000
|
|
4000
|
3000~5600
|
100000
|
85000~130000
|
|
8000
|
6000~9000
|
150000
|
130000~180000
|
|
10000
|
9000~12000
|
200000
|
≥180000
|
|
15000
|
12000~18000
|
--
|
--
|
|
Note: Viscosity above are of 2% water solution detected by NDJ viscometer, 20?.
|
|
