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Polyvinyl Acetate Phthalate or PVAP
CAS Number: 34481-48-6 and 53237-50-6
Molecular Formula: C8H6O4-C4H6O2 or C12H12O6
Molecular Weight: 252.22
Polyvinyl Acetate Phthalate or PVAP
Polyvinyl Acetate Phthalate USP NF Grade Specifications:
DEFINITION
Polyvinyl Acetate Phthalate is a reaction product of phthalic anhydride and a partially hydrolyzed polyvinyl acetate. It contains NLT55.0% and NMT 62.0% of phthalyl (o-carboxybenzoyl, C8H5O3) groups, calculated on the anhydrous, acid-free basis.
IDENTIFICATION
A. The Sample solution in the Assay exhibits a maximum at 277 ± 3 nm.
B.
Sample:10 mg
Analysis: Place the Sample in a small test tube, add 10 mg of resorcinol, and mix. Add 0.5 mL of sulfuric acid, and heat in a liquid bathat 160° for 3 min. Cool, and pour the solution into a mixture of 25 mL of 1 N sodium hydroxide and 200 mL of water.
Acceptance criteria: The solution shows a vivid green fluorescence.
C.
Sample solution: 100 mg/mL of Polyvinyl Acetate Phthalate in methanol
Analysis: Pour 1 mL of the Sample solution onto a clear glass plate.
Acceptance criteria: A film is deposited as the methanol evaporates.
ASSAY
Phthalyl content:
Acceptance criteria: 55.0% to 62.0% of phthalyl (o-carboxybenzoyl, C8H5O3) groups on the anhydrous, acid-free basis
Free phthalic acid:
Acceptance criteria: NMT 0.6% on the anhydrous basis
Free acid other than phthalic:
Acceptance criteria: NMT 0.6% on the anhydrous basis
Viscosity - capillary methods:
Acceptance criteria: The apparent viscosity is 7 to 11 mPa · s (centipoises).
Water determination: nmt 5.0%
Please visit SDS Safety Data Sheet of Polyvinyl Acetate Phthalate or PVAP Suppliers.
American Molecules, also known as ammol.org is a distributor, supplier and manufacturers' representative of all types of Pharmaceuticals, Functional Ingredients, Excipients and Specialty Chemicals in Texas USA. Our principals manufacture supply and export USP NF BP, Ph Eur, etc grades of chemicals pure and reagent grade, mineral fortifiers, FCC food grade. Tailor made particle size and customized specifications are offered. The principal's facility is having one or more of the certifications like FDA approval and GLP, cGMP, ISO9001, ISO14001, ISO/IEC 17025, ISO22000, FSSC 22000, ISO45001, FSSAI, Kosher, HALAL, COPP, WHO-GMP certified and Written Confirmation (WC) for export to Europe is available. The manufacturers suppliers and exporters observe WHO Good Manufacturing Practices and Good Laboratory Practices.
Suppliers and Manufacturers' Representative:
9910 Bent Oak Dr
Houston, TX 77040, USA
Call Toll Free: 1-855-55-AMMOL 1-855-552-6665
Email: info@ammol.org