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Propylparaben
CAS Number: 94-13-3
Molecular Formula: C10H12O3
Molecular Weight: 180.2
Propylparaben
Propylparaben USP NF Grade Specifications
C10H12O3 --- 180.20
Benzoic acid, 4-hydroxy-, propyl ester.
Propyl p-hydroxybenzoate
CAS 94-13-3
Propylparaben contains not less than 98.0 percent and not more than 102.0 percent of C10H12O3.
Identification:
A: Infrared Absorption 197M .
B: Melting range: between 96C and 99C.
Color of solution: Dissolve 1 g in alcohol, dilute with alcohol to 10 mL, and mix (Propylparaben solution). This solution is clear and not more intensely colored than alcohol or a solution prepared immediately before use by mixing 2.4 mL of ferric chloride, 1.0 mL of cobaltous chloride, and 0.4 mL of cupric sulfate with 0.3 N hydrochloric acid to make 10 mL, and diluting 5 mL of this solution with 0.3 N hydrochloric acid to make 100 mL. Make the comparison by viewing the solutions downward in matched color-comparison tubes against a white surface.
Acidity: To 2 mL of Propylparaben solution prepared in the Color of solution test add 3 mL of alcohol, 5 mL of carbon dioxide-free water, and 0.1 mL of bromocresol green, and titrate with 0.10 N sodium hydroxide: not more than 0.1 mL is required to produce a blue color.
Residue on ignition: not more than 0.1%, determined on 1.0 g.
Related substances: To pass the test.
Propylparaben FCC Food Grade Specifications
Propyl p-Hydroxybenzoate
C10H12O3 Formula weight 180.20
INS: 216 CAS 94-13-3
DESCRIPTION
Propylparaben occurs as small, colorless crystals or as a white powder. One gram dissolves in about 2500 mL of water at 25C, in about 400 mL of boiling water, in about 1.5 mL of alcohol, and in about 3 mL of ether.
Function: Preservative; antimicrobial agent.
REQUIREMENTS
Identification: Dissolve about 500 mg of sample in 10 mL of 1 N sodium hydroxide, and boil for 30 min, allowing the solution to evaporate to a volume of about 5 mL. Cool the mixture, and carefully acidify it with 2 N sulfuric acid. When the precipitate is cool, collect it on a filter, wash it several times with small portions of water, and dry it in a desiccator over silica gel. The liberated p-hydroxybenzoic acid melts between 212C and 217C.
Assay: Not less than 99.0% and not more than 100.5% of C10H12O3, calculated on the dried basis.
Acidity: Passes test.
Lead: Not more than 2 mg/kg.
Loss on Drying: Not more than 0.5%.
Melting Range: Between 95C and 98C.
Residue on Ignition: Not more than 0.05%.
We also supply Propylparaben of BP Ph Eur Grade.
Please visit SDS Safety Data Sheet of Propylparaben 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