Methyl Paraben Cas 99-76-3

CAS number: 99-76-3

Molecular formula: C8H8O3

molecular weight: 151.1399

Chemical structure:

Certificate of Analysis


Product NameMethyl Paraben
Expiry Date2 years
Inspection StandardUSP29
Item
SpecificationResult
AppearanceWhite crystalline powderComply
Purity(on dry base)%99.0-100.599.3
Melting point 125-128126.4
AcidPassedPassed
IdentificationA. Infrared absorption Spectrophotometry
B. Thin-Layer Chromatographic
Passed
Residue %≤ 0.10.030
Loss on drying %≤0.500.35
Heavy metal (Pb)≤10ppm3ppm
Organic Volatile ImpuritiePassedPassed
Related Substances PassedPassed
Appearance of solutionClearPassed