PARSOL®340 is an oil-soluble UV-B filtercompatible with most commonly used cosmeticingredients. It is a clear, yellowish, viscous liquidwith a characteristic odour of bitter almonds.
PARSOL®340 is used in association with other UV-B and UV-A filters to raise the sun protectionfactor (SPF), and to develop effective broad-spectrum sunscreens and protective cosmeticpreparations for daily use.
PARSOL®340 is photostable and can be used tophotostabilize PARSOL®1789. Such a stabilizationis claimed in the European patent publication EP 0780 119 A1 for light screening compositions inwhich the molar ratio of PARSOL®340 toPARSOL®1789 is less than 0.8.
Chemical structure
24272
361.5
Physical and chemical properties
Appearance:
yellow, clear viscous liquid
Assay (gas chromatographic):min. 98%Flash point: >100 °C (212 °F)UV specific extinction (E 1%, 1 cm at 303 nm in methanol): 340–370Acid value: max. 0.5UV absorption spectra
Absorbance0.80.75 mg/L0.610 mg/L0.520 mg/L0.40.30.20.10260280300320340360380400Wavelength (nm)Solubility
PARSOL®340 is generally miscible in oils andesters used in cosmetic preparations. It is also agood solvent.
It is insoluble in water.
Stability and storage
PARSOL®340 is stable at room temperature whenprotected from light and humidity. The productmay be stored for 24 months from the date of man-ufacture in the unopened original container and ata temperature below 25 °C.
The ‘best used before’ date is printed on the label.Keep container tightly closed.
Suitable materials for containers are laqueredmetal, aluminium, stainless steel, dark glass, poly-ethylene and enamel.
Uses
PARSOL®340 is used in association with otherUV-B and UV-A filters for the development of effec-tive broad-spectrum sunscreens and protectivepreparations for daily use.
PARSOL®340 is a photostabilizer for PARSOL®1789.
Indicative formulations are available upon request.
Recommended use levels
Formulate according to local regulations.
Materials to be avoided
None known to date.
Regulatory status
TSCA/EEC:registered
EU:
listed in Council Directive76/768/EEC, Annex VII, Part 1, No.10 [Colipa No. S 32, max. 10%(expressed as acid)]
USA:
FDA/OTC Category I, up to 10%alone or 7-10% in combination withother specified category I sun-screensJapan:
not listed
052005
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