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The Scientific World Journal

The Scientific World Journal

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Quantification of sunscreen ethylhexyl triazone in topical skin-care products by normal-phase TLC/densitometry.

Published:1 January 2012 DOI: 10.1100/2012/807516 PMID: 22629203
Anna W Sobanska, Jaroslaw Pyzowski

Abstract

Ethylhexyl triazone (ET) was separated from other sunscreens such as avobenzone, octocrylene, octyl methoxycinnamate, and diethylamino hydroxybenzoyl hexyl benzoate and from parabens by normal-phase HPTLC on silica gel 60 as stationary phase. Two mobile phases were particularly effective: (A) cyclohexane-diethyl ether 1 : 1 (v/v) and (B) cyclohexane-diethyl ether-acetone 15 : 1 : 2 (v/v/v) since apart from ET analysis they facilitated separation and quantification of other sunscreens present in the formulations. Densitometric scanning was performed at 300 nm. Calibration curves for ET were nonlinear (second-degree polynomials), with R > 0.998. For both mobile phases limits of detection (LOD) were 0.03 and limits of quantification (LOQ) 0.1 μg spot(-1). Both methods were validated.

Substances (9)

Related products
Procduct Name CAS Molecular Formula Supplier Price
Cyclohexane 110-82-7 C6H12 841 suppliers $10.00-$8580.00
Avobenzone 70356-09-1 C20H22O3 612 suppliers $10.00-$2055.90
Octocrylene 6197-30-4 C24H27NO2 542 suppliers $5.00-$7507.50
Ethylhexyl Triazone 88122-99-0 C48H66N6O6 385 suppliers $8.00-$1394.66
Diethylamino hydroxybenzoyl hexyl benzoate 302776-68-7 C24H31NO4 330 suppliers $8.00-$650.00
Silica glass 10279-57-9 H2O3Si 228 suppliers Inquiry
4-METHOXYCINNAMIC ACID 2-ETHYLHEXYL ESTER 83834-59-7 C18H26O3 224 suppliers $14.00-$239.00
Hexyl benzoate 6789-88-4 C13H18O2 186 suppliers $8.00-$13218.30
DIETHYLAMINOHYDROXYBENZOYL HEXYL BENZOATE C24H31NO4 7 suppliers Inquiry

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