n: degree of polymerization， R:—H，—CH3 or —CH2CHOHCH3
CAS NO.: 9004-65-3
SPECIFICATIONS:
Index
Type
60ZC
65ZC
75ZC
Methoxyl content(WT%)
28.0-30.0
27.0-30.0
19.0-24.0
Hydroxypropoxyl content(WT%)
7.0-12.0
4.0-7.5
4.0-12.0
Gelation temperature(ºC)
58.0-64.0
62.0-68.0
70.0-90.0
PH value(1% solution ,25ºC)
4.0-8.0
Ash content(WT%)
≤ 1.0
Loss on drying (WT%)
≤ 5.0
VISCOSITY : (2% solution at 20ºC)
Specification
Range
40,000
38,000-42,000
80,000
77,000-83,000
100,000*
4,100-5,600
*the viscosity of 1% solution at 20ºC.
CHARACTERS:
1.Appearance: White or light gray pellet or fibril power with odorless and tasteless. 2. Pellet: 100 screen passable rate is over 98.5%,80 screen passable rate is 100%. 3. Solubility: It can dissolve in some organic solvents or some water-organic components. Hardly dissolves in waterless ethanol, ether or acetone. Expands as to clear or slightly muddy colloid solution in cold water. 4. Apparent density:0.25-0.70g/cm3, density:1.26-1.31g/cm3.
APPLICATIONS:
Chemical ingredient HPMC are widely used in food ,cosmetic and other daily use chemical lines, Typical usage as following:
1. Construction: it can be used for sticking tile, marble or plastic while laying, plastering, wedging, and especially in decorating. 2. Paiting: it can be used as thickeners, making the coat bright and exquisite. 3. Mixed powder: it can improve the water-keeping and felt strength properties in plaster.
DISSOLVING PROCESS:
HPMC will agglomerate when directly added to water and then dissolve. In this way it dissolves very slow and hard, suggested methods as followers:
Method 1: Add the total water to container and heated to 85ºC. Add HPMC with slowly stiring. At first HPMC will float on the water and then disperse. Stir to cool and it turn to transparent.
Method 2. Add water in container to 1/3 or 2/3 of its total content. Heated to over 80ºC.Because HPMC doesn’t dissolve in hot water, it uniformly disperses in hot water. Add cool water or ice to the residual content, stir and cool down the mixture.
Method 3. Mix HPMC with identical or more volume of other powder, disperses them sufficiently then add water to the mixture, then HPMC dissolves without agglomeration.
Method 4. Dispersed or wet HPMC with organic solvents such as ethanol, glycol or oil, then add water, HPMC will completely dissolves.
PACKING:
20kg or 25kg package in polyethylene bag or barrel with inner liners.
STORAGE & TRANSPORT:
Keep dry where good ventilated. Keep from sunshine when transport.
