Preservatives (3) (RP18-613)

Preservatives were analyzed using RSpak RP18-613 (a column for reversed phase chromatography).


Sample :
1. Saccharin sodium
2. p-Hydroxybenzoic acid
3. Sorbic acid
4. Benzoic acid
5. Methyl paraben, Methyl p-hydroxybenzoate
6. Ethyl paraben, Ethyl p-hydroxybenzoate
7. Dehydroacetic acid
8. Propyl paraben, Propyl p-hydroxybenzoate

Column       : Shodex RSpak RP18-613 (6.0mmID*150mm)
Eluent       : (0.05M KH2PO4 + 0.1% H3PO4) aq./CH3CN=60/40
Flow rate    : 1.0mL/min
Detector     : UV(210nm)
Column temp. : 50deg-C