ELECTROLVTES AND EMULSION STABILITY 181 Table II Formulation (Emulsifier and Electrolyte Content) Parameters of Emulsions Prepared with El0 Ethoxylate Viscosity (Brookfield pH (Beck,nan LVF No. 4 Zeromatic) Spindle Mean Particle 80 min 60 rpm Diameter, after at 25øC ,30 •nin after Cmnpletion in cps) Cmnpletion (•) Emulsion Type 1. El0, no electrolyte 6.0 40 10.0 O/W 2. El0, 0.001 g/100 ml sodium chloride 6.1 40 10.0 O/W 3. El0, 0.01 g/100 •nl sodium chloride 6.0 50 8.8 O/W 4. El0, 0.1 g/100 ml sodium chloride 5.9 43 8.7 O/W 5. El0, 1.0 g/100 ml sodiron chloride 6.1 60 8.7 O/W 6. El0, 10 g/100 •nl sodium chloride 5.6 45 5.0 O/W 7. El0, 0.001 g/100 ml potassium chloride 5.8 45 10.0 O/W 8. El(), 0.01 g/100 ml potassium chloride 5.7 30 8.6 O/W 9. E10, 0.l g/100 ml potassium chloride 5.7 33 8.5 O/W 10. El0, 1.0 g/100 •nl potassium chloride 5.6 40 6.5 O/W 11. El0, 10 g/100 ml potassium chloride 5.5 50 3.8 O/W 12. El0, 0.001 g/100 ml calcium chloride 4.6 30 10.0 O/W 13. El0, 0.01 g/100 ml calcium chloride 4.7 38 9.5 O/W 14. El0, 0.1 g/100 ml calcium chloride 4.7 31 9.4 O/W 15. El0, 1.0 g/100 ml calcimn chloride 4.5 50 8.5 O/W 16. El0, 10 g/100 ml calcium chloride 4.0 42 6.0 O/W

182 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS Table III Formulation (Emulsifier and Electrolyte Content) Parameters of Emulsions Prepared with El5 Ethoxylate Viscosity (Brookfidd pH (Beckman LVF No. 4 Zeromatic) Spindle Mean Particle 30 min 60 rpnl Diameter, after at 25øC 30 min after Completion in cps) Completion (u) Emulsion Type 1. El5, no electrolyte 2. El5, 0.001 g/100 ml sodium chloride 3. El5, 0.01 g/100 ml sodium chloride 4. El5, 0.1 g/100 ml sodium chloride 5. El5, 1.0 g/100 ml sodium chloride 6. El5, 10 g/100 ml sodium chloride 7. El5, 0.001 g/100 ml potassium chloride 8. El5, 0.01 g/100 ml potassium chloride 9. El5, 0.1 g/100 ml potassium chloride 10. El5, 1.0 g/100 ml potassimn chloride 11. El5, 10 g/100 ml potassium chloride 12. El5, 0.001 g/100 ml calcium chloride 13. El5, 0.01 g/100 ml calcium chloride 14. El5, 0.1 g/100 ml calcium chloride 15. El5, 1.0 g/100 ml calcium chloride 16. El5, 10 g/100 ml calcium chloride 6.0 6.0 5.9 6.0 5.8 55 60 61 62 62 57 6.0 6.0 6.1 5.0 4.5 aa •0.0 o/w as 9.7 o/w a7 8.9 o/w 41 8.5 O/W 40 7.9 O/W 43 .5.8 O/W 29 10.0 O/W 3o 9.7 o/w ,34 9.4 O/W a8 8..5 o/w 50 5.0 o/w 45 9.8 O/W 49 9.4 0/W 43 9.1 O/W 41 7.9 O/W 40 7.0 O/W