4,4-Oxybis(benzoic Acid) Dimethylester
Synonymses: 4,4'-Oxydiphthalic acid dimethyl ester, Dimethyl 4,4'-diphenyl ether dicarboxylate, OBBA dimethyl ester
| Item | Details |
| CAS No. | 14387-30-5 |
| Molecular Formula | C16H14O5 |
| Molecular Weight | 286.28 |
| Appearance | White to off-white crystalline powder |
| Melting Point | 142～144℃ |
| Boiling Point | Approx. 380℃ (decomposes under atmospheric pressure), 195℃ (0.1kPa reduced pressure) |
| Density | 1.27 g/cm3(25℃) |
| Solubility | Insoluble in water, slightly soluble in methanol, ethanol and acetone; soluble in DMF, DMSO, chloroform, ethyl acetate and other organic solvents |
| Stability | Stable under normal temperature and pressure; decomposes under intense heat, hydrolyzes into 4,4'-oxydibenzoic acid when contacting strong alkalis; avoid contact with strong oxidants and strong alkalis |
| HS Code | 2918990090 (Other carboxylic acids with additional oxygen-containing groups and their derivatives) |
| Packing | 25kg fiber drum / woven bag lined with PE inner bag |
| Storage Conditions | Store in cool and dry warehouse with sealed packaging; isolate air, strong oxidants and strong alkalis; keep away from heat and open flame, store at room temperature away from light and prevent moisture-induced hydrolysis |
| Personal Protection | Wear dust mask, nitrile rubber gloves and goggles; avoid inhalation of dust and direct contact with skin and eyes |
| Waste Disposal | Collect and dispose uniformly as organic hazardous waste; strictly prohibit direct discharge into sewers or natural water bodies, do not discard arbitrarily |
| Application Fields | Primary use: core monomer for high-performance polymers; modifier and functional additive for polymer materials; fine chemical intermediate for pharmaceuticals; core raw material for optoelectronic functional materials; precursor for MOFs / coordination polymers; intermediate for dyes and fluorescent materials |
