SOLUBILITY PARAMETERS IN COSMETIC FORMULATING 329 Table I Solubility Parameters of Some Cosmetic Materials CTFA Material Name Propellant 13 2.59* Methane 4.70* Cyclomethicone D5 5.77 Dimethicone 5.92* Cyclomethicone D4 5.99 Squalane 6.03 Propellant 12 6.11' Hexamethyldisiloxane 6.15 Squalene 6.19 Propane 6.21' Propellant 22 6.23 Neopentane 6.38 Isopentane 6.82 Pristane 6.85 C8-Isoparaffin 6.93 White Mineral Oil 7.09* Sperm Oil 7.09* Pentane 7.10' Hexane 7.28 Linseed Oil 7.29* Petrolatum 7.33* Behenic Acid 7.35 Diethyl ether 7.37 Heptane 7.41 Octyl Palmitate 7.44 Propellant 11 7.49 Erucic Acid 7.57 Octane 7.58 Decane 7.62 C12-15 Alcohols Benzoate 7.63 Isobutyl Stearate 7.65 Butyl Stearate 7.68 Stearic Acid 7.74 Dioctyl Maleate 7.75 Isopropyl Palmirate 7.78 Oleth-3 7.83* Linolenic Acid 7.86 Olive Oil 7.87* Palmitic Acid 7.89 Oleic Acid 7.91 PEG-4 Stearate 7.92* Isopropyl Myristate 8.02 Turpentine (pinerie) 8.03 Methyl Oleate 8.05 Cetyl Acetate 8.06 Isostearic Acid 8.09 Myristic Acid 8.10 Melissy! Alcohol 8.22 Glyceryl Stearate (mono) 8.31' Lauric Acid 8.46 Diisopropyl Adipate 8.46 Polyethylene 8.50* Diisopropyl Amine 8.51'

330 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS Table I (continued) CTFA Material Name Ethylene/Vinyl Acetate Copolymer (AC400) 8.55' Sorbitan Laurate 8.61 Behenyl Alcohol 8.63 Isostearyl Alcohol 8.67 Zinc Stearate 8.80* Citronellal 8.83 Oxidized Polyethylene (AC629) 8.85' Methyl Isobutyl Ketone 8.85 Capric Acid 8.88 Muscone 8.89 Arachidyl Alcohol 8.89 Elaidyl Alcohol 8.90 Pentaerythritol Rosinate 8.90* Stearyl Alcohol 8.90 B-Ionone 8.90 Dioctyl Phthalate 8.90* Castor Oil 8.90* Oleth- 10 8.90* Octyl Dodecanol 8.92 Butyl Acetate 8.93 Cetyl Alcohol 8.94 Oleyl Alcohol 8.95 Octyl Dimethyl PABA 9.01 Propyl Acetate 9.02 Glyceryl Laurate 9.08 Ceteth~20 9.10' PPG-3 Methyl Ether 9.10' Myristyl Alcohol 9.16 Ethyl Acetate 9.19 Methoxypropanol Acetate 9.20* Sodium Stearate 9.29* Citral 9.34 Caprylic Acid 9.35 Ethoxyethanol Acetate 9.40* Isocetyl Alcohol 9.47 Nonylphenol 9.49' Oxidized Polyethylene (AC392) 9.50' Lauryl Alcohol 9.51 Ethylene/Vinyl Acetate Copolymer (AC430) 9.55' Methylene Chloride 9.55 Cholesterol 9.55 PPG-2 Methyl Ether 9.60* Undecyl Alcohol 9.61 MEK 9.63 Decyl Alcohol 9.78 Acetone 9.87 Dibutyl Phthalate 9.88* Ethoxyethanol 9.90' Caproic Acid 9.94 Tributyrin 9.97 Butoxy Diglycol 9.98* Caprylic Alcohol 10.09 Geraniol 10.21 Butyl Lactate 10.27 t-Butyl Alcohol 10.28