COMPLEX FORMATION IN AEROSOLS Table IV Variation in Alcohols--Triethanolamine Laurate a System 815 Emulsion Properties Alcohol b Viscosity Stability Foam Properties c, d Drainage Stiffness (30 min) (g) None Low 1 min Lauryl Low to medium 5 hr Myristyl Low to medium 5 hr Cetyl Medium 5 hr Stearyl Low to medium 5 hr Oleyl Low 15-30 min 82 8 2 20 0 88 0 18 67 10 2 12 Triethanolamine laurate concentration = 0.10 Soap/alcohol ratio (molar) = 1:1. All discharges are quiet. Foam densities range from 0.062 to 0.067 g/co. Table V Variation in Alcohols--Triethanolamine Myristate a Systems Foam Properties c Emulsion Properties Drainage Stiffness Alcohol • Viscosity Stability (2 hr) (g) Type of Discharge None Low 1-5 min 47 86 Lauryl Medium to high 5 hr 0 48 Myristyl Medium to high 5 hr 0 48 Cetyl Medium to high 5 hr 0 28 Stearyl Medium to high 5 hr 4 26 Oleyl Medium 5 hr 3 22 Quiet Slightly noisy Slightly noisy Slightly noisy Slightly noisy Quiet Triethanolamine myristate concentration = 0.10 M. Myristate/alcohol ratio (molar) = 1:1. Foam densities ranged from 0.067 to 0.073 g/cc. Table VI Variation in Alcohols--Triethanolamine Pahnitate a Systems Foain Properties Emulsion Properties Drainage Stiffness Density Alcohol • Viscosity Stability (60 min) (g) (g/cc) Type of Discharge None Low 1 min 33 25 0.09 Lauryl Low 1 min 27 20 0.14 Myristyl Medium 24 hr 1 32 0.15 Cetyl Medium 24 hr .5 34 0.18 Stearyl Medium 24 hr 2 29 0.15 Slightly noisy-- liquid Noisy--se•niliquid Noisy--liquid Noisy--liquid Noisy liquid a Triethanolamine Palmitate concentration = 0.025 M. •' Pahnitate/alcohol ratio (molar) = 1:1.

816 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS Table VII Variation in Alcohols--Triethanolamine Stearate • Systems Emulsion Properties Alcohol b Viscosity Stability Foam Properties Drainage Stiffness Density (2 hr) (g) (g/cc) Type of Discharge None Low 1 rain 53 14 0.19 Lauryl Low 5-15 min 52 8 0.21 Myristyl Low to 24 hr 0.5 32 0.17 medium Cetyl Medium 24 hr 2 21 0.27 Stearyl Medium 24 hr 4 15 0.33 Noisy--liquid Noisy--semi- liquid Noisy--liquid Noisy--liquid Noisy--liquid Triethanolamine Stearate concentration = 0.025 Stearate/alcohol ratio (molar) = 1:1. Table VIII Effect of Cholesterol in Triethanolamine--Fatty Acid Systems Foam Properties Emulsion Properties Fatty Drainage Stiffness Density Acid s Alcohol •' Viscosity Stability (60 rain) (g) (g/co) Type of Discharge Laurie None Low 1-5 •nin 84 6 0.06 Laurie Lauryl Low to 24 hr 11 20 0.06 medium Lauric Cholesterol Low to 24 hr 36 3 0.08 medium Myristic None Low 1-5 min 34 34 0.06 Myristic Myristyl High 24 hr 0 50 0.07 Myristic Cholesterol Medimn 24 hr 5 17 0.10 Palmitic None Low to 5-15 min 0 39 0.06 medium Palmitic Cetyl High 24 hr 0 42 0.09 Palmitie Cholesterol Medium 24 hr 2 12 0.10 Stearic None Low to 5-15 min () 30 0.11 medium Stearic Stearyl High 24 hr 0 88 0.23 Stearic Cholesterol Medium 24 hr 2 16 0.12 to high Quiet Quiet Noisy Quiet Noisy Noisy Quiet Slightly noisy Slightly noisy Noisy--semi- liquid Noisy Slightly noisy Triethanolamine-fatty acid concentration = 0.10 M. Soap/alcohol ratio (molar) = 1:1.