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Description
[4-[(2-Ethylhexyl)oxy]-2-hydroxyphenyl](phenyl)methanone is a member of the 2-hydroxybenzophenone family, supplied by TCI both as a synthetic raw material and as a functional additive. Its core structure consists of a benzophenone skeleton bearing a hydroxyl group positioned ortho to the carbonyl, together with a long, branched 2-ethylhexyloxy ether chain. In the laboratory, the compound serves as an ultraviolet light absorber and as a non-heterocyclic building block for constructing other benzophenone derivatives. It plays an important role in material stability research, coating formulation work, and photochemical studies that require a UV-absorbing chromophore with good solubility in organic media and polymers.
The characteristics that lead researchers to select this compound are the combination of a conjugated benzophenone chromophore with an intramolecular hydrogen bond between the ortho hydroxyl group and the carbonyl. This arrangement allows the molecule to absorb photon energy and release it again as heat without undergoing rapid structural breakdown, so its protective function is retained over long exposure periods. The branched 2-ethylhexyl chain confers high lipophilicity, reduces the tendency to crystallise, and improves compatibility with organic and polymeric matrices, which makes the material straightforward to incorporate into formulations without separation or blooming.
In Indonesian laboratories, the compound is typically used in university and institutional research groups working on polymer stability, coatings, and photochemistry, as well as in industrial quality-control and formulation laboratories. The tropical climate, with its high year-round UV exposure, makes weathering and photostability studies a routine concern, and a benzophenone-type absorber that dissolves readily in organic solvents and disperses well in polymer systems fits directly into that work. It is also used on a preparative scale as a starting material for further derivatisation.
Laboratory Applications
- UV absorber screening in polymer formulations: the conjugated benzophenone chromophore absorbs ultraviolet light and dissipates the energy as heat, protecting the polymer matrix from photodegradation during accelerated ageing trials.
- Coating and film formulation studies: the branched 2-ethylhexyloxy chain gives high lipophilicity and low crystallisation tendency, so the additive disperses evenly in resin systems without separating or migrating to the surface.
- Non-heterocyclic building block for organic synthesis: the free ortho hydroxyl group and the intact benzophenone core provide reactive handles for preparing further substituted benzophenone derivatives in multi-step routes.
- Photochemical mechanism research: the intramolecular hydrogen bond between the ortho hydroxyl and the carbonyl supports excited-state proton transfer, making the compound a useful model substrate for photophysical and photostability investigations.
- Material weathering and stability testing: because the absorber returns to its ground state without rapid structural breakdown, it suits long-duration exposure experiments where the protective additive must remain functional throughout the test period.
Specifications
- Brand: TCI (Tokyo Chemical Industry)
- CAS number: 2549-90-8
- Category: Chemistry > Building Blocks > Non-Heterocyclic Building Blocks
- Chemical class: 2-hydroxybenzophenone derivative; non-heterocyclic building block and functional UV-absorbing additive
- Pack sizes: supplied in standard TCI research-scale packaging; please confirm the available pack size when ordering
- Storage: store in a tightly closed original container, protected from light, following the conditions stated on the manufacturer's label
Handling and Storage
Store the compound in its tightly closed original container in a cool, dry, well-ventilated area, away from direct sunlight and other strong light sources, since the material is itself a UV-absorbing chromophore and prolonged light exposure is best avoided. Amber glass or the supplier's original light-protective packaging is suitable; keep the container clearly labelled and separated from strong oxidising agents. Handle in a fume hood using safety glasses, chemical-resistant gloves, and a laboratory coat, and avoid generating dust, skin contact, and inhalation of vapours. Use clean, dry spatulas when weighing to prevent contamination, close containers promptly after use, and consult the manufacturer's safety data sheet before first use and before disposal of any residues.
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![[4-[(2-Ethylhexyl)oxy]-2-hydroxyphenyl](phenyl)methanone (CAS 2549-90-8) - TCI E1619 - AMI Scientific](http://amiscientific.com/cdn/shop/files/TCI2510E1619.jpg?v=1767113127&width=1445)
