Product Specifications
Product Description
1. Molecular structure:
N: Degree of polymerization; R: -H, -CH3 or CH2CHOHCH3
2. Technical Index:
Quality index
Item Type (gelatification temperature)
60C 65C 75C
Methoxyl 28-30% 27-30% 19-24%
Hydroxypropyl 7-12% 4-7.5% 4-12%
Gelatification temperature 58-64 62-68 70-90
Moisture ≤5%
Ash ≤1%
pH(1% solution, 25C) 4-8
Viscosity specification
Type Specification Range, mpa. S
Special low viscosity 5 3-7
10 8-12
15 13-18
Low viscosity 25 20-30
50 40-60
100 80-120
High viscosity 4000 3500-5600
12000 10000-14000
Special high viscosity 20000 17000-22000
25000 22000-28000
30000 27000-32000
40000 37000-42000
50000 2900-3900
Note: 2% aqueous solution at 20C; *1% aqueous solution at 20C
3. Property:
(1)Appearance: White or off-white powder
(2)Particle size: Throughput efficiency of above 98.5% in 100 mesh, and 100% in 80 mesh.
(3)Carbonization temperature: 280-300C
(4)Apparent density: 0.25-0.70g. Cm3(usually about 0.5g/cm3), specific gravity: 1.26-1.31.
(5)Color degradation temperature: 190-200C
(6)Surface tension: 42-56dyn/cn(2% aqueous solution)
(7)Soluble in water and some organic solvents: Its aqueous solution is of surface tension, high transparency and stable property. The solubility varies with the viscosity, the lower the viscosity is, the higher solubility it has. The different HPMC is different is different in some properties and its solubility in water is not affected by pH.
(8)The lower methoxyl content in HPMC, the higher gelatification temperature, the lower solubility in water and surface activity.
(9)HPMC has also other characteristic such as thickening property. pH stability, water retention, excellent film-forming property and good disperse and adhesion power.
4. Usage:
HPMC is mainly used as dispersant in the production of PVC and as thickener, stabilizer, emulsifier, excipient, water retention agent, film-forming agent in petrochemical, building materials, agrochemical, ink, printing and dyeing of textile, paper making, cosmetic, etc.
5. Dissolving method:
(1)Heat the water to above 85C and slowly and HPMC under agitation to gradually form uniform pulp, then cool under agitation to become transparent.
(2)Heat one third to two third of needed water to above 85C, add HPMC to form heat pulp, then add residual water and remain agitation, cool to about 20C.
6. Package and storage:
Sealed in the plastic-plated polypropylene woven bag, net weight: 20kg, Keeping away from sun, rain and moisture during storage and transportation.
Shandong Zhicheng Chemical Co., Ltd., is subordinate to Hebei Zhicheng Chemical Group Co., Ltd. Hebei Zhicheng Chemical Group Co., Ltd. is alarge scale group company with 9 subsidiary companies integrating the production of pesticides, dyes and chemical intermediates. Its fixed assets are 416 million Yuan and it has more than 1, 800 employees, more than 40% of which have education backgrounds of junior colleges or higher. Its annual production capacity is over 0.2 million tons with about 36, 000tons in pesticides.
The company invested 250 million Yuan in 2004 and established the production base for bulk Avermectin with an annual production capability of 300 tons. It became the largest production base of Avermectin in China in one go. It is also the largest Avermectin production base in the world. According to the marketdemand at home and abroad, the company has started the Phase II Engineering and Technology Modification Project. The output and the production scale are predicted to be doubled after the Phase II project is put into production.
Now our company can provide various kinds of fine powders and ointments to meet the different demands from both our domestic customers and our oversea customers. The large scale production, the start of art production processes, the high precision testing devices, and the guidance from authoritative persons home and abroad provide our products with more market competitiveness. We commit ourselves to persistently provide you with high quality products and services on a long term and timely basis with mutually beneficial prices. We here invite you to hold our hands together to enter into wholehearted collaborations in bringing a prosperous future for all of us.
