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1.2.3.5- Benzenetetracarboxylic acid

Figure 14. Typical gas chromatogram of oxidation product. Key a,by solvent c, benzenedicarboxylic acid d, benzenemonohydroxydicarboxylic acid e, benzenetricarboxylic acid /, unknown g, benzenetetracarboxylic acid h, unknown i, benzenepentacarboxylic acid benzenehexacarbox-... Figure 14. Typical gas chromatogram of oxidation product. Key a,by solvent c, benzenedicarboxylic acid d, benzenemonohydroxydicarboxylic acid e, benzenetricarboxylic acid /, unknown g, benzenetetracarboxylic acid h, unknown i, benzenepentacarboxylic acid benzenehexacarbox-...
The polyamic acids were prepared in these laboratories using modifications of a standard preparation (7). Benzophenone tetracarboxylic acid dianhydride (BTDA), benzenetetracarboxylic acid dianhydride (pyromellitic dianhydride PMDA), oxydianiline (ODA), 1,4-phenylenediamine (PDA) and 1,3-phenylenediamine (MPDA) were all obtained from Aldrich Chemical Co. The S -biphenyl tetracarboxylic acid dianhydride (BPDA) was obtained from Ube Chemical Company. The polyamic acids were prepared in N-methylpyrrolidinone (BTDA-ODA, BTDA-MPDA and BTDA with a 1 1 molar ratio of MPDA and ODA) or dimethyl acetamide (BPDA-PDA and PMDA-ODA). [Pg.62]

Experiment 7-7 Synthesis of the Three-Dimensional Coordination Polymer 40 from Nickel(II), Benzenetetracarboxylic Acid and 4,4 -Bipyridine (Section 7.3.2.1) [119]... [Pg.315]

Benzenetetracarboxylic acid Benzene-1,2,4,5-tetracarboxylic acid. See Pyromellitic acid... [Pg.988]

CAS 89-05-4 EINECS/ELINCS 201-879-5 Synonyms 1,2,4,5-Benzenetetracarboxylic acid Benzene-1,2,4,5-tetracarboxylic acid PM A Pyromelletic acid 1,2,4,5-Tetracarboxybenzene Empirical CioHeOs Formula C6H2(COOH)4 Properties Wh. powd. sol. in alcohol si. sol. in water m.w. 254.16 dens. 1.79 m.p. 257-265 C Toxicology LD50 (IP, mouse) 300 mg/kg poison by IP route skin irritant possible carcinogen TSCA listed... [Pg.3794]

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See also in sourсe #XX -- [ Pg.93 , Pg.429 ]



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