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产品 Details

Vitamin > vitamin B5

    vitamin B5

    Product name:
    D-Panthenol
    D-(+)-2,4-Dihydroxy-N-(3-hydroxypropyl)-3,3-dimethylbutyramide
    Formula weight:
    205.25
    CAS NO:
    81-13-0
    Structure formula:
    Technical information:
     Index Name:
    Index
     D-Panthenol
     D-Panthenol 75%
     Appearance:
     Colourless, viscous clear liquid
     Colourless, viscous clear liquid
     Identification:
     Positive reaction
     Positive reaction
     Assay:
     Between 98.0% and 102.0%
     Not less than 75%
     Specific rotation
     (on dried basis):
     Between +29.5°and +31.5°
     Between +29.0°and +31.5°
     Limit of aminopropanol:
     
     Not more than 1.0%
     Not more than 1.0%
     Refractive index:
     Between 1.495 and 1.502 at 20°
     Between 1.466 and 1.475 at 20°
     Water:
     Not more than 1.0%
     ---
     Residue on ignition:
     Not more than 0.1%
     Not more than 0.1%
     Heavy metals:
     Not more than 20pmm
     Not more than 20pmm
     PH-value:
     ---
     Between 6.0 and 7.5