131-55-5
2,2',4,4'-Tetrehydroxybenzophenone
CAS: 131-55-5
Molecular Formula: C13H10O5
131-55-5 - Names and Identifiers
| Name | 2,2',4,4'-Tetrehydroxybenzophenone |
| Synonyms | Benzophenone 2 Benzophenone-2 2,2,4,4-Tetrahydroxybenzophenol Di(2,4-dihydroxyphenyl)methanone 2,2,4,4 TETRAHYDROXY BENZOPHENONE bis(2,4-dihydroxyphenyl)-methanon bis(2,4-dihydroxyphenyl)methanone Bis(2,4-dihydroxyphenyl)methanone 2,2'4,4'-Tetrahydroxy benzophenone 2,2',4,4'-tetrehydroxybenzophenone 2,2',4,4'-Tetrehydroxybenzophenone 2,2',4,4'-Tetrahydroxybenzophenone 2,4,2',4'-Tetrahydroxybenzophenone 2,4,2',4'-tetrahydroxybenzophenone 2,2',4,4'-tetrahydroxy-benzophenon 2,2',4,4'-Tetrahydroxy Benzophenone Benzophenone, 2,2',4,4'-tetrahydroxy- |
| CAS | 131-55-5 |
| EINECS | 205-028-9 |
| InChI | InChI=1/C13H10O5/c14-7-1-3-9(11(16)5-7)13(18)10-4-2-8(15)6-12(10)17/h1-6,14-17H |
| InChIKey | WXNRYSGJLQFHBR-UHFFFAOYSA-N |
131-55-5 - Physico-chemical Properties
| Molecular Formula | C13H10O5 |
| Molar Mass | 246.22 |
| Density | 1.216 |
| Melting Point | 198-200°C(lit.) |
| Boling Point | 349.21°C (rough estimate) |
| Flash Point | 289.2°C |
| Water Solubility | Slightly soluble in water. |
| Solubility | DMSO (Slightly, Sonicated), Methanol (Slightly) |
| Vapor Presure | 6.69E-12mmHg at 25°C |
| Appearance | Yellow to brown crystalline powder |
| Color | Needles from H2O |
| BRN | 1914746 |
| pKa | 6.98±0.35(Predicted) |
| Storage Condition | Sealed in dry,Room Temperature |
| Refractive Index | 1.4825 (estimate) |
| MDL | MFCD00002278 |
| Physical and Chemical Properties | Melting Point: 199-204 |
| Use | Used as pharmaceutical intermediates, photosensitive materials, cosmetics anti-ultraviolet additives |
131-55-5 - Risk and Safety
| Risk Codes | R22 - Harmful if swallowed R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S37/39 - Wear suitable gloves and eye/face protection |
| WGK Germany | 3 |
| RTECS | DJ1892000 |
| TSCA | Yes |
| HS Code | 29145090 |
| Toxicity | LD50 oral in rat: 1220mg/kg |
131-55-5 - Reference Information
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| introduction | 2,2 ',4,4'-tetrahydroxybenzophenone ultraviolet absorber belongs to the series of benzophenone ultraviolet absorber products, with absorption wavelength range of 320-400nm, symmetrical benzene ring and hydroxyl groups on both sides. its thermophotochemical performance is stable and superior to BP-1(UV-O), at present, it is widely used in plastics, resins, coatings, synthetic rubber, photosensitive materials and cosmetics industries. In recent years, the application of fabrics has been paid more and more attention by the textile industry. |
| preparation | 1510 g (0114 mol) of resorcinol, 1514 g (011 mol) of 4-dihydroxybenzoic acid, 2015 g (0115 mol) of anhydrous ZnCl2 2015 g (0115 mol), 3010 g (0120 mol) of POCl3 and 15 mL of solvent cyclobutyl are put into a 150 mL flask equipped with a stirrer and hydrogen chloride absorption system, stirring is started, and the materials are mixed evenly, heat up to 70 ℃ ~ 75 ℃, keep the temperature for 2 h until little hydrogen chloride gas is released in the absorption system. Then slowly add water to the reaction bottle, stir until it is completely dissolved, and then pour it into 800 mL of cold water and fully. let the above solution stand for 30 min, cool to below 20 ℃, filter and wash with water to obtain crude product. Then dissolve the crude product with hot water, add activated carbon for treatment, boil for 30 min, heat filter, cool, precipitate a large number of light yellow crystals, filter, wash and dry to obtain 1617 g of yellow crystal product with a yield of 6719%, m p 198 ℃ ~ 200 ℃. IR: φ max (cm- 1) :3 350~3 200 (B, s, φ O - H) ,1 629 (s, φ C = O) ,1 590 - 1 450 (s, φ benzene ring) ,850~650 (s ,δ benzene ring-H). |
| use | used as pharmaceutical intermediates, photosensitive materials, cosmetics UV protection additives, etc. |
| category | toxic substances |
| toxicity classification | poisoning |
| acute toxicity | oral-rat LD50: 1220 mg/kg |
| stimulation data | eye-rabbit 100 mg moderate |
| flammability hazard characteristics | combustible; combustion produces toxic nitrogen oxide smoke |
| storage and transportation characteristics | ventilation and low temperature drying |
| fire extinguishing agent | dry powder, foam, sand, carbon dioxide, mist water |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 02:00:06
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