Octabenzone

Octabenzone

Names
Preferred IUPAC name [2-Hydroxy-4-(octyloxy)phenyl](phenyl)methanone
Other names Benzophenone-12, Spectra-Sorb UV 531, MPI Milestab 81
Identifiers
CAS Number	1843-05-6 Y
3D model (JSmol)	Interactive image
ChemSpider	15020 Y
ECHA InfoCard	100.015.838
KEGG	D00441 Y
MeSH	(2-hydroxy-4-(octyloxy)phenyl)phenylmethanone
PubChem CID	15797
UNII	73P3618V2E Y
CompTox Dashboard (EPA)	DTXSID9027441
InChI InChI=1S/C21H26O3/c1-2-3-4-5-6-10-15-24-18-13-14-19(20(22)16-18)21(23)17-11-8-7-9-12-17/h7-9,11-14,16,22H,2-6,10,15H2,1H3 Y Key: QUAMTGJKVDWJEQ-UHFFFAOYSA-N Y InChI=1/C21H26O3/c1-2-3-4-5-6-10-15-24-18-13-14-19(20(22)16-18)21(23)17-11-8-7-9-12-17/h7-9,11-14,16,22H,2-6,10,15H2,1H3 Key: QUAMTGJKVDWJEQ-UHFFFAOYAM
SMILES O=C(c1ccc(OCCCCCCCC)cc1O)c2ccccc2
Properties
Chemical formula	C21H26O3
Molar mass	326.429 g/mol
Appearance	Light Yellow to Colourless Solid
Melting point	47–49 °C (117–120 °F; 320–322 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

Octabenzone (Spectra-Sorb UV 531, MPI Milestab 81) is a UV absorber/screener. It is used to protect polymers (e.g., polyethylene, polypropylene, polyvinylchloride) against damage by UV light.

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