Chemical Name: Oxirane, methyl-, polymer with oxirane, dodecyl ether
Cas No.: 68238-81-3
Molecular Fomula: C17H36O3
Molecular Weight: 288.46594
Parameter | Specification | PEG-12 Dodecyl Ether | PEG-20 Dodecyl Ether |
---|---|---|---|
CAS Number | 68238-81-3 | N/A | N/A |
Molecular Formula | C12H25O(CH2CH2O)nH | C12H25O(CH2CH2O)12H | C12H25O(CH2CH2O)20H |
HLB Value | 14.5 ± 0.5 | 13.2 | 16.1 |
Viscosity @25°C (cP) | 180-220 | 150-180 | 240-280 |
Enhances API solubility in oral suspensions (5-8% w/w loading) while complying with USP <51> antimicrobial efficacy standards.
Primary emulsifier in O/W systems (HLB 14.5) for SPF 30+ sunscreens, reducing interfacial tension to ≤35 mN/m.
Reduces coefficient of friction by 42% in metalworking fluids at 0.5-1.2% concentration ranges.
Optimal results achieved when heated to 65°C ± 3°C during phase inversion, maintaining shear rate ≥2,500 rpm.
Combines with sodium laureth sulfate at 3:1 ratio to boost foam stability by 28% in alkaline conditions (pH 9.2-10.5).
Challenge: Phase separation in 40% ibuprofen cream during accelerated stability testing (40°C/75% RH).
Solution: 6.5% loading achieved 18-month shelf life with viscosity maintained at 12,500 ± 500 cP.
Outcome: Reduced production rejects from 8.2% to 0.9% within 6 months.
Challenge: Inconsistent SPF values (28-32) in water-resistant sunscreen emulsion.
Solution: Implemented 7% concentration with high-shear homogenization (5,000 rpm, 15min).
Outcome: Achieved SPF 34.5 ± 0.3 with 80-minute water resistance (ISO 24443:2021).
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Available in multiple grades:
- Industrial Grade (99.0% purity)
- Pharma Grade (EP 11.0 compliant)
- Cosmetic Grade (ISO 16128 certified)
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