Solvent Dielectric constant, (ε) Percentage extraction, (% E) Distribution ratio, (D)
Benzene 2.27 100
Xylene 2.30 100
Toluene* 2.38 100
Chloroform 4.80 23.8 0.78
Methyl isobutyl ketone 13.10 60.8 3.87
n-Butanol 17.80 No extraction -
Amyl alcohol 13.90 No extraction -
Amyl aceate 13.90 No extraction -
1, 2-Dichloroethane 10.50 No extraction -
Pt(IV)=150 μg Aq: Org=2.5: 1
pH=0.50 Ascorbic acid=0.01 M
Equilibrium time=3 min Strippant=Water (2×10 mL)* Recommended for general extraction procedure
Table 1: Extraction behaviour of platinum (IV) as a function of diluents.