Oxybenzone - CAS 131-57-7
Catalog number: 131-57-7
Category: Inhibitor
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Molecular Weight:
2-Hydroxy-4-methoxybenzophenone (benzophenone-3) is commonly employed as broad-band UV-filter in sunscreen cosmetic products. It protects skin from the deleterious effects of the sun. It is one of the sunscreen constituent and its trace determination in water samples by solid-phase microextraction (SPME) and gas chromatography with flame ionization and mass spectrometric detection has been reported.
Eusolex 4360; Escalol 567; KAHSCREEN BZ-3; Benzophenone 3
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1.Simultaneous Determination of Octinoxate, Oxybenzone, and Octocrylene in a Sunscreen Formulation Using Validated Spectrophotometric and Chemometric Methods.
Abdel-Ghany MF, Abdel-Aziz O, Ayad MF, Mikawy NN. J AOAC Int. 2015 Sep-Oct;98(5):1215-25. doi: 10.5740/jaoacint.14-229.
Accurate, reliable, and sensitive spectrophotometric and chemometric methods were developed for simultaneous determination of octinoxate (OMC), oxybenzone (OXY), and octocrylene (OCR) in a sunscreen formulation without prior separation steps, including derivative ratio spectra zero crossing (DRSZ), double divisor ratio spectra derivative (DDRD), mean centering ratio spectra (MCR), and partial least squares (PLS-2). With the DRSZ technique, the UV filters could be determined in the ranges of 0.5-13.0, 0.3-9.0, and 0.5-9.0 μg/mL at 265.2, 246.6, and 261.8 nm, respectively. By utilizing the DDRD technique, UV filters could be determined in the above ranges at 237.8, 241.0, and 254.2 nm, respectively. With the MCR technique, the UV filters could be determined in the above ranges at 381.7, 383.2, and 355.6 nm, respectively. The PLS-2 technique successfully quantified the examined UV filters in the ranges of 0.5-9.3, 0.3-7.1, and 0.5-6.9 μg/mL, respectively.
2.[Degradation of Organic Sunscreens 2-hydroxy-4-methoxybenzophenone by UV/ H2O2 Process: Kinetics and Factors].
Feng XX, Du ED, Guo YQ, Li HJ, Liu X, Zhou F. Huan Jing Ke Xue. 2015 Jun;36(6):2129-37.
Organic sunscreens continue to enter the environment through people's daily consumption, and become a kind of emerging contaminants. The photochemical degradation of benzophenone-3 (BP-3) in water by UV/H2O2 process was investigated. Several factors, including the initial BP-3 concentration, H2O2 concentration, UV light intensity, coexisting cations and anions, humic acid and tert-butyl alcohol, were also discussed. The results showed that BP-3 degradation rate constant decreased with increasing initial BP-3 concentration, while increased with increasing H2O2 dosage and UV intensity. Coexisting anions could reduce the degradation rate, while coexisting ferric ions could stimulate the production of OH through Fenton-like reaction, further significantly accelerated BP-3 degradation process. The BP-3 degradation would be inhibited by humic acid or tert-butyl alcohol. The electrical energy per order (E(Eo)) values were also calculated to evaluate the cost of BP-3 degradation by UV/H2O2 process.
3.[n-Butyl Alcohol-soluble Chemical Constituents of Psidium guajava Leaves].
Chen G, Wan KH, Fu HZ, Yan QW. Zhong Yao Cai. 2015 Mar;38(3):521-3.
OBJECTIVE: To study the chemical constituents of the leaves of Psidium guajava.
4.Digital micromirror device (DMD)-based 3D printing of poly(propylene fumarate) scaffolds.
Mott EJ1, Busso M2, Luo X2, Dolder C1, Wang MO3, Fisher JP3, Dean D4. Mater Sci Eng C Mater Biol Appl. 2016 Apr 1;61:301-11. doi: 10.1016/j.msec.2015.11.071. Epub 2015 Dec 2.
Our recent investigations into the 3D printing of poly(propylene fumarate) (PPF), a linear polyester, using a DMD-based system brought us to a resin that used titanium dioxide (TiO2) as an ultraviolet (UV) filter for controlling cure depth. However, this material hindered the 3D printing process due to undesirable lateral or "dark" curing (i.e., in areas not exposed to light from the DMD chip). Well known from its use in sunscreen, another UV filter, oxybenzone, has previously been used in conjunction with TiO2. In this study we hypothesize that combining these two UV filters will result in a synergistic effect that controls cure depth and avoids dark cure. A resin mixture (i.e., polymer, initiator, UV filters) was identified that worked well. The resin was then further characterized through mechanical testing, cure testing, and cytotoxicity testing to investigate its use as a material for bone tissue engineering scaffolds. Results show that the final resin eliminated dark cure as shown through image analysis.
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CAS 131-57-7 Oxybenzone

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