Phase A | |
| Water (Aqua) | 61.91 |
| Disodium EDTA | 0.10 |
| Pemulen EZ-4U Polymeric Emulsifier (Lubrizol) (Acrylates/C10-30 Alkyl Acrylate Crosspolymer) | 0.20 |
| Glycerin | 6.00 |
Phase B | |
| Parsol 340 (DSM) (Octocrylene) | 10.00 |
| Parsol MCX (DSM) (Ethylhexyl methoxycinnamate) | 7.50 |
| Parsol EHS (DSM Nutritional Prod.) (Ethylhexyl salicylate) | 4.50 |
| Parsol 1789 (DSM Nutritional Products) (Butyl methoxydibenzoylmethane) | 3.00 |
| C12-15 alkyl benzoate | 6.00 |
Phase C | |
| Sodium hydroxide (18 wt%) | 0.29 |
| Phenoxyethanol | 0.50 |
Procedure | |
| PART A: Using overhead mixer and marine blade, add Disodium EDTA to Water and mix until fully dissolved. Slowly add PemulenTM EZ-4U polymeric emulsifier to Part A with mixing. Continue mixing until fully dispersed and hydrated.Add glycerin to Part A and mix until homogenous. In a separate vessel, combine Part B ingredients and mix until solution is clear. Add Part B to Part A and mix until homogenous. Homogenize batch for 1min @ 10,000rpm using Ultra-Turrax homogenizer model T25 (IKA). Return the batch to overhead mixing and add Part C ingredients one at a time ensuring good mixing between additions. Increase mixing speed as needed to ensure homogeneity. | |
Properties | |
| Appearance—Yellowish lotion; pH—5.9 – 6.2; Viscosity (mPa•s) Brookfield RVT Viscometer spindle #4 @ 20 rpm, 25 °C @ 24 hours—3,800 – 5,000; SPF (determined by In Vitro testing using Labsphere UV-2000S UV Analyzer)— Static: 36 SPF (determined by In Vitro testing using Labsphere UV-2000S UV Analyzer— Very water resistant (after 80 minutes immersion): 34; Stability—passed 4 weeks @ 50°C, passed 5 cycles freeze/thaw, Ongoing RT and 45°C. | |
More Information | |
| Lubrizol Advanced Materials, Inc. 800-379-5389, 216-447-5000 Website: www.lubrizol.com/personal-care | |
Formulary
Water-Resistant PEG-Free Sun Lotion SPF 30
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