| Identification | More | [Name]
2,2'-Dihydroxy-4,4'-dimethoxybenzophenone | [CAS]
131-54-4 | [Synonyms]
2,2-DIHYDROXY-4,4'-DIMETHOXY BENZOPHENONE
2,2'-DIHYDROXY-4,4'-DIMETHOXYBENZOPHENONE
BENZOPHENONE-6
BENZOPHENONE-6-(2,2'-DIHYDROXY-4,4'-DIMETHOXYBENZOPHENONE)
BIS-(2-HYDROXY-4-METHOXY-PHENYL)-METHANONE
LABOTEST-BB LT00159524
Uvinul D49
UVINUL(R) D49
2,2’-dihydroxy-4,4’-dimethoxy-benzophenon
4,4'-Dimethoxy-2,2'-dihydroxybenzophenone
Benzophenone, 2,2'-dihydroxy-4,4'-dimethoxy-
bis(2-hydroxy-4-methoxyphenyl)-methanon
Cyasorb UV 12
cyasorbuv12
Methanone, bis(2-hydroxy-4-methoxyphenyl)-
Methanone,bis(2-hydroxy-4-methoxyphenyl)-
2,2Dihydroxy-4,4Dimethoxybenzophenone(Bp-6)
2.2''-DIHYD[CL]ROXY-4.4''-DIMETHY1[E]BENZOPHENONE
Cyasorb UV | [EINECS(EC#)]
205-027-3 | [Molecular Formula]
C15H14O5 | [MDL Number]
MFCD00009606 | [Molecular Weight]
274.27 | [MOL File]
131-54-4.mol |
| Chemical Properties | Back Directory | [Appearance]
Yellow crystalline powder | [Melting point ]
133-136 °C(lit.)
| [Boiling point ]
377.26°C (rough estimate) | [density ]
1.2662 (rough estimate) | [refractive index ]
1.5000 (estimate) | [storage temp. ]
Keep in dark place,Sealed in dry,2-8°C | [solubility ]
Chloroform (Slightly), Methanol (Slightly, Heated) | [form ]
Solid | [pka]
6.81±0.35(Predicted) | [color ]
Pale Yellow to Light Yellow | [Water Solubility ]
negligible | [Merck ]
14,1099 | [BRN ]
1887087 | [Stability:]
Hygroscopic | [Cosmetics Ingredients Functions]
FRAGRANCE
UV ABSORBER | [Cosmetic Ingredient Review (CIR)]
2,2'-Dihydroxy-4,4'-dimethoxybenzophenone (131-54-4) | [InChI]
1S/C15H14O5/c1-19-9-3-5-11(13(16)7-9)15(18)12-6-4-10(20-2)8-14(12)17/h3-8,16-17H,1-2H3 | [InChIKey]
SODJJEXAWOSSON-UHFFFAOYSA-N | [SMILES]
COc1ccc(c(O)c1)C(=O)c2ccc(OC)cc2O | [LogP]
3.9-4.1 | [CAS DataBase Reference]
131-54-4(CAS DataBase Reference) | [NIST Chemistry Reference]
2,2'-Dihydroxy-4,4'-dimethoxybenzophenone(131-54-4) | [EPA Substance Registry System]
131-54-4(EPA Substance) |
| Hazard Information | Back Directory | [Chemical Properties]
Yellow crystalline powder | [Uses]
As ultraviolet light absorber, especially in paints, plastics. | [Preparation]
preparation by reaction of 2-hydroxy-4-methoxy-benzoic acid with resorcinol monomethyl ether in the presence of zinc chloride and phosphorous oxychloride at 7075° for 2. | [Synthesis]
A synthetic method steps of 2,2'-dihydroxy-4,4'-dimethoxybenzophenone are:
1) In the presence of a catalyst, m-xylylene dimethyl ether and oxalyl chloride were reacted at 70-80°C for 1.5 hours to obtain the intermediate product 2,2' 4,4'-tetramethoxybenzophenone, said The ratio of the amount of m-phthalyl ether to the amount of oxalyl chloride is 1:1-20, the catalyst used is azoisobutyronitrile or benzoyl peroxide, and the amount of the catalyst is the mass of m-xylylene 0.5%-2%;
2) React the intermediate product obtained in step 1) with the Lewis acid under the condition of an organic solvent as a solvent, the reaction temperature is 50°C, and the time is 2-3 hours. After stopping the reaction, add water for hydrolysis, liquid separation, rotary evaporation, and recrystallization. That is, 2,2'-dihydroxy-4,4'-dimethoxybenzophenone is obtained;
The Lewis acid is one of AlCl3 , ZnCl2 , BF3 and polyphosphoric acid; the organic reagent is one of dichloroethane, toluene, xylene, nitrobenzene and chlorobenzene; The reactions in the steps 1) and 2) are carried out under the protection of inert gas. |
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