Formulary

Emulsifier-Free Sunscreen Milk, SPF 30

May 1, 2010


Phase A
Sylvaclear WF1500V (Arizona Chemical) (Polyamide-4)
4.00
Butylene glycol (ISP)
5.00
Escalol 557 (ISP) (Ethylhexyl methoxycinnamate (octinoxate))
7.50
Escalol 587 (ISP) (Ethylhexyl salicylate)
5.00
Escalol 567 (EMD Chemical/Merck) (Benzophenone-3)
5.00
Finsolv TN (Innospec) (C12-15 alkyl benzoate)
5.00
DC 200 350 cSt (Dow Corning) (Dimethicone)
18.00
Carbopol ETD 2020 (Noveon) (Acrylates/C 10-30alkyl acrylate crosspolymer)
0.30
Phenonip (Clariant) (Phenoxyethanol, propylparaben, methylparaben, isobutylparaben, ethylparaben, butylparaben)
0.50

Phase B
TTO-S-4 (Kobo) (Titanium dioxide, aluminium hydroxide stearic acid)
12.00

Phase C
Water
34.70

Phase D
BPD-500 (Kobo) (HDI Trimethylol hexyllactone crosspolymer, silica)
2.00

Phase E
Sodium hydroxide (Sol. 10%) (Sodium hydroxide water)
1.00

Properties
Heat phase A to 95°C until uniform. Premix phase B and add to phase A. Heat phase C to 75°C while stirring. Add phase C to phase A+B and mix until uniform. Add phase D to phase A+B+C and mix until uniform. Cool to room temperature and adjust the pH with phase E.

Properties
pH—6.6 - 6.9; Viscosity—31,634 cPs (Viscostar Plus, Spindle 6, speed 20 rpm, 20°C) Stability—3 months at RT and 42°C, 1 month at 50°C In vitro SPF: 31.50

More Information
Arizona Chemical Company, Email: tom.fontana@azchem.com, Website: www.arizonachemical.com
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