补充描述:
4,4'-Oxydiphthalic Anhydride (ODPA, CAS 1823-59-2) is a chemical-grade anhydride manufactured directly by Hebei Haili Evergreen New Materials Co., Ltd. to its in-house standard Q/82HL05-2004, with molecular formula C16H6O7. Samples are available, and the product is distributed broadly across North and South America, Europe, Asia, the Middle East, and Africa.
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