4,4'-Dihydroxybenzophenone

4,4′-Dihydroxybenzophenone is an organic compound with the formula (HOC₆H₄)₂CO. This off-white solid is a precursor to, or a degradation product of, diverse commercial materials. It is a potential endocrine disruptor.^[1]

4,4′-Dihydroxybenzophenone

Names
Preferred IUPAC name Bis(4-hydroxyphenyl)methanone
Other names Benzophenone, 4,4′-dihydroxy-(7Cl,8Cl); 4,4′-dihydroxydiphenyl ketone; Bis(4-hydroxyphenyl) ketone; HBP; HBP (ketone); NSC
Identifiers
CAS Number	611-99-4 N
3D model (JSmol)	Interactive image
ChEBI	CHEBI:34365
ChEMBL	ChEMBL194859 Y
ChemSpider	62365 Y
DrugBank	DB07635 Y
ECHA InfoCard	100.009.354
EC Number	210-288-1
KEGG	C14220 Y
PubChem CID	69150
UNII	HZR7D31SBY
CompTox Dashboard (EPA)	DTXSID1022425
InChI InChI=1S/C13H10O3/c14-11-5-1-9(2-6-11)13(16)10-3-7-12(15)8-4-10/h1-8,14-15H Y Key: RXNYJUSEXLAVNQ-UHFFFAOYSA-N Y InChI=1/C13H10O3/c14-11-5-1-9(2-6-11)13(16)10-3-7-12(15)8-4-10/h1-8,14-15H Key: RXNYJUSEXLAVNQ-UHFFFAOYAR
SMILES O=C(c1ccc(O)cc1)c2ccc(O)cc2
Properties
Chemical formula	C13H10O3
Molar mass	214.22 g/mol
Appearance	Off white/yellow solid
Density	1.302g/cm3
Melting point	213 to 215 °C (415 to 419 °F; 486 to 488 K)
Boiling point	444.8 °C (832.6 °F; 718.0 K) @760mmHg
Solubility in water	0.45 g/L
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H317, H319, H335
Precautionary statements	P261, P264, P271, P272, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P333+P313, P337+P313, P362, P363, P403+P233, P405, P501
Flash point	237 °C (459 °F; 510 K)
Safety data sheet (SDS)	MSDS by Fisher Scientific
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

Synthesis

4,4′-Dihydroxybenzophenone is prepared by the rearrangement of p-hydroxyphenylbenzoate:

HOC₆H₄CO₂C₆H₅ → (HOC₆H₄)₂CO

Alternatively, p-hydroxybenzoic acid can be converted to p-acetoxybenzoyl chloride. This acid chloride reacts with phenol to give, after deacetylation, 4,4′-dihydroxybenzophenone.

Uses

The main application of 4,4′-dihydroxybenzophenone is as a UV light stabilizer. It and its derivatives are found in cosmetics, plastics, films, adhesives and coatings, optical fiber, and printed circuit boards. It is the precursor to certain polycarbonate polymers.^[2]