Home > Offer to Sell > Organic Chemicals and Derivatives > Others > Hydroxypropyl methyl Cellullose (HPMC)
Hydroxypropyl methyl Cellullose (HPMC)
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| Post Date: | Apr 29,2014 |
| Expiry Date: | Oct 26,2014 |
| Detailed Description: |
Techinical specifications of
Pharmaceutical Grade (conforming to Q/09FRT001-2000 and standard of USP30) Index Type Items HPMC 65RT 60RT 75RT Hydroxypropoxyl content:wt% 4.0-7.5 7.0-12.0 4.0- 12.0 Methoxyl content:wt% 27.0-30.0 28.0-30.0 19.0-24.0 Gelation temperature℃ 62-68 58-64 70-90 Ash content:wt% Not more than 1.0 Moisture:wt% Not more than5.0 Viscosity:(2%by weight at 20℃) 5-100000 PHvalue(1%by weight at 25℃) 4-8 Chloriides:(NACL) wt% Not more than 0.2 Arsenic:ppm Not more than 2 Heavy metals:ppm Not more than 20 Main Specification of Industral Grade Index Type Items 60RT 65RT 75RT Methoxyl content:wt% 28-30% 27- 30% 19-24% Hydroxypropoxyl content:wt% 7-12% 4-7.5% 4-12% Gelation temperature℃ 58-64 62-68 70-90 Loss on drying: wt% ≤5% Ash content:wt% ≤3% PHvalue(1%by weight at 25℃) 4-8 Viscosity:(2%by weight at 20℃) 5-100000 Physical and chemical properties Particle size: usp 24:98.5% passes through 100 mesh sieve; 100% passes though 80 mesh sieve. Tech Grade: 99% passes through 40 mesh sieve Charring temperatrue:280-300℃, Bulkdensity of the powder:0.25- 0.70g/cm3 (Usually around 0.5g/cm) 3 Ture specific gravity:1.26-1.31 Broming temperature:190- 200℃,Surface tension:2% water solution surface tension 42- 56dyn/cm. Solubility: Dissolved in water and some organic solvent such as ethanol, propyl alcohol, ethylene chloride.The water solution is of surface grades. For example, among 60RT HPMC, 60 is gelation temperature. Namely, 2%water solution will form gelation at 60℃.That is the gelation property of HPMC. And the solubility degree some differences exist among different HPMC.HPMC has stability in water and thickening ability salt resistance, surface activity, thermal gelation, ash content, PH-stability water retention shape retention shape retention shape retention, lubricity and film forming. Main uses of HPMC The product is a medicinal accessory material of many uses. It can be used for densifiers, dispersing agent, emulsifying agent, lubricator and film former etc. It’s used as an adhesive and coating film in tablets, Increasing markedly rate of dissolution and release, and trengthing the water-proofing for tablets and also be used as mixed dispersing agent, eye-drop agent, controlled released matrix tablets. It is combined with other synthetic polymers and gel- type drug products to prevent the separation If water and alcohol in aqueous transparent jelly drugs and to improve water retention. Other uses, it can be used in food or in cosmetics, and daily chemical industries(main used in Paint, Printing and coating, PVC industry,etc) too. Process for dissolving HPMC 1. Place the required amount of hot water heated to above 85℃ in a vessel and HPMC gradually added while stirring gently, at first HPMC floats on the Surface of the water, but it is gradually dispersed to form a uniform slurry, cool the slurry while stirring it. 2. Place one-thirds of the required amount of water, heat to above 85℃ in a vessel, disperse HPMC and prepare a hot slurry while stirring, cool the resultant mixture. Package. Storage. Transportation USP24: packed in fiber drum and lining with polyethylene film bag.Net weight 25kg per drum. Tech.Grade: 25Kgs bags Direct sunshine and raining, moisture must be avoided. |
| Company: | JOYLONG CHEMICALS CO.,LTD [ China ] |
| Contact: | Tina |
| Tel: | 86-731-85360795 |
| Fax: | 86-731-85360699 |
| Email: | joylong@jlcchem.com |
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