Name:
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CAS No:
H.S Code:
Name:
Synonyms:
CAS No:
H.S Code:
Hydroxypropyl methylcellulose
Hypromellose, HPMC E5
9004-65-3
391290000
Hydroxypropyl methylcellulose (HPMC) 2910 E5, also known as Hypromellose, is a semi-synthetic cellulose ether and viscoelastic polymer. It is derived from cellulose, a natural substance found in cotton and wood, and is widely used across various industries due to its unique properties.
Key Characteristics of HPMC 2910 E5:
Items | Specification |
Methoxy Content | 28.0%-30.0 % |
Hydroxypropyl Content | 7%-12% |
PH | 5-8 |
Loss on drying | 5% max |
Heavy metal | 10 ppm max |
Arsenic | 2 ppm max |
Apparent Viscosity | 3-6 (mPa.s) |
Residue On Ignition | 1.5% max |
Total Bacterium | 1000/g max |
Mold | 100/g max |
Start
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Raw Material Preparation (Crush the cotton into fine powder)
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Etherification (Combine Methyl Chloride with Propylene Oxide to complete the etherification reaction)
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Neutralization After etherification, the reaction mixture is neutralized, often with an acid, to stop the reaction and remove excess alkali
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Precipitation-The HPMC is then precipitated from the solution using alcohol (usually isopropyl alcohol or ethanol).
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Washing (to remove impurities and residual solvents)
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Drying (moisture control)
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Milling and Sieving (achieve the desired particle size for its intended application.)
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Quality Control
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Packaging
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End
HPMC is available in 25kg fiber drums, 20KG cartons, Poly lined with pallets.