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PROPYL PARABEN USP

  • PROPYL PARABEN U.S.P.
    Chemical Name Propyl 4-Hydroxybenzoate
    Molecular Formula C10H12O3
    Molecular Weight 180.20
    Structural Formula  
    CAS Number 94-13-3
    Grade USP-30
    Packing 5 Kg., 20 Kg (4 x 5 kg)
    The Shelf-life 5 years
    Storage conditions and precautions Preserve in a well-closed containers.
    Use Antimicrobial Preservative

     

    NO. Test Observation
    1. Description Small, colorless crystals or white powder.
    2. Solubility Very slightly soluble in water, freely soluble in alcohol and in ether; slightly soluble in boiling water.
    3. Identification A.Infrared absorption <197M>.
    B. Melting Range <741>: between 96°C and 99°C
    4. Color of solution The solution is clear and not more intensely colored than matching fluid G.
    5. Acidity Not more than 0.1 ml is required to produce a blue color.
    6. Residue on Ignition, (w/w) Not more than 0.1 %.
    7. Related Substances The intensity of any individual secondary spot in the chromatogram of the test solution is not greater than that of the principal spot obtained in the chromatogram of standard solution A (0.5 %)
    8. Organic volatile Impurities Method IV <467>. Meets the requirements.
    9. Assay, (w/w) Not less than 98.0% and not more than 102.0% of C10H12O3.

     

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