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4,4'-diphenyl ether dicarboxylic acid diethyl ester

Item	Details
CAS No.	3096-86-4
Molecular Formula	C18H18O5
Molecular Weight	314.33
Appearance	White to off-white crystalline powder
Melting Point	85～90℃ (literature estimated value)
Boiling Point	Approx. 390℃ (decomposes under atmospheric pressure), 210℃ (0.1kPa reduced pressure, predicted value)
Density	1.23 g/cm3 (25℃, calculated value)
Refractive Index	1.615 (predicted value)
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