Dibutyl Phthalate USP-NF 2.5LT Go Back


: 84-74-2

Molecular Formula

: C16H22O4

Molecular Weight

: 278.35
Description: A clear, oily liquid, colorless or very slightly yellow.
Solubility: Practically insoluble in water. Miscible with alcohol and with ether.
Identification A (By IR, undried sample): IR spectra of the sample should be concomitant with IR spectra of the standard.
Identification B (By Refractive index, 20°C): 1.490 - 1.495
Assay: 99.0 - 101.0%m/m
Residue on ignition: NMT 0.1%
Related compounds: 1.0% max
Specific gravity, 20°C: 1.043 - 1.048
Refractive index (20°C ± 0.5°C): 1.490 - 1.495
Acidity: NMT 0.50mL is required to change the color of the indicator.
Water: NMT 0.2%
Appearance: The sample should be clear and not more intensely colored than the standard solution.
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