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Pharmacopoeia name: Covidone
INCI name: VP/VA Copolymer
CAS Number: 25086-89-9
Product form and properties：White powder or transparent, semi transparent solution, odorless or slightly characteristic odor, soluble in organic solvents such as water and ethanol; Has good adhesion, moisture absorption, film-forming properties, and surface activity.
Quality standard
Testing items | VP/VA37E | VP/VA55E(I) | VP/VA64E(W) | VP/VA73E(W) | VP/VA64(Powder) |
| K value | 24-32 | 30-38 | 26-34 | 30-38 | 26-34 |
PH value (5% aqueous solution) | / | / | / | / | 4-7 |
Moisture content/% | ≤0.5% | ≤0.5% | ≤0.5% | ≤0.5% | ≤5.0% |
VP residual order/ppm | ≤500 | ≤500 | ≤500 | ≤500 | ≤10 |
VA residual order/ppm | ≤300 | ≤300 | ≤300 | ≤300 | ≤10 |
Solid content/% | 49-51% | 49-51% | 49-51% | 49-51% | / |
Burning residue/% | ≤0.1% | ≤0.1% | ≤0.1% | ≤0.1% | ≤0.1% |
Peroxide/ppm | / | / | / | / | ≤400 |
Aldehyde/ppm | / | / | / | / | ≤500 |
Heavy metal/ppm | ≤10 | ≤10 | ≤10 | ≤10 | ≤10 |
*E -- Alcohol solution I -- Isopropanol solution W -- Water solution
Main applications and functions：
〖Biomedicine〗Copolymer of vinylpyrrolidone and vinyl acetate can be used as dry adhesive for direct compression, adhesive for wet granulation of tablets, capsules and granules, film forming agent for tablet coating, bottom coating and external spray.
〖Daily chemical care〗Copolyvinylpyrrolidone, that is, the copolymer of vinylpyrrolidone and vinyl acetate, can be used as a hair care film forming agent and styling agent, especially in aerosol, spray products, liquid products, mousse and gel gels. Among them, the VP/VA copolymer aqueous solution can be carbomer soluble, and is suitable for the formula without ethanol.
Package and Storage
20KG/paper drum, 50KG/plastic drum, sealed packaging, stored at dry and room temperature.
Hangzhou Poly.Tech.Co.,Ltd
Domestic business
Contact: Manager Chen
Phone: 13685794797
Email: 1491793720@qq.com
Address: Huali Technology Health and Pharmaceutical Industry Park, Future Science and Technology City, Hangzhou, Zhejiang Province
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