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CAS No 89-05-4 , benzene-1,2,4,5-tetracarboxylic acid

  • Name: benzene-1,2,4,5-tetracarboxylic acid
  • Synonyms: USAF XR-20;benzene-1,2,4,5-tetracarboxylic acid; 89-05-4;1,2,4,5-Benzenetetracarboxylic acid; 1,2,4,5-Benzene-tetracarboxylic acid; Benzene-1,2,4,5-tetracarboxylic acid;
  • CAS Registry Number:
  • Transport: 25kgs
  • Melting Point: 281-284.5 ºC
  • Flash Point: 322.1ºC
  • Boiling Point: 585.8ºC at 760 mmHg
  • Density: 0,56 g/cm3
  • Water Solubility: 1.5 G/100 ML (20 ºC)
  • Safety Statements: R36/37/38
  • Hazard Symbols: Xi: Irritant;
  • HS Code: 29173980
  • Flash Point: 322.1ºC
  • EINECS: 201-879-5
  • Molecular Weight: 254.14984
  • InchiKey: CYIDZMCFTVVTJO-UHFFFAOYSA-N
  • InChI: InChI=1S/C10H6O8/c11-7(12)3-1-4(8(13)14)6(10(17)18)2-5(3)9(15)16/h1-2H,
    (H,11,12)(H,13,14)(H,15,16)(H,17,18)
  • Risk Statements: S26;S37/39
  • Molecular Formula: C10H6O8
  • Molecular Structure:CAS No:89-05-4 benzene-1,2,4,5-tetracarboxylic acid

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References of benzene-1,2,4,5-tetracarboxylic acid
Title: Pyromellitic Acid
CAS Registry Number: 89-05-4
CAS Name: 1,2,4,5-Benzenetetracarboxylic acid
Molecular Formula: C10H6O8
Molecular Weight: 254.15
Percent Composition: C 47.26%, H 2.38%, O 50.36%
Literature References: Prepd by heating mellitic (benzenehexacarboxylic) acid with KHSO4 and H2SO4: Silberrad, J. Chem. Soc. 89, 1795 (1906) (actually the dianhydride, mp 286°, is obtained by this method). Laboratory prepn from pine or spruce charcoal: Philippi, Thelen, Org. Synth. coll. vol. II, 551 (1943); by oxidation of benzene derivatives contg substituents in the 1,2,4,5 positions: Jacobsen, Ber. 17, 2516 (1884).
 
Derivative Type: Dihydrate
Properties: Triclinic plates from water. When anhydr, mp 276°. Distills with anhydride formation. 1.5 g (anhydr) dissolves in 100 ml water. Freely sol in alc.
Melting point: mp 276°
 
Derivative Type: Tetramethyl ester
Molecular Formula: C14H14O8
Molecular Weight: 310.26
Percent Composition: C 54.20%, H 4.55%, O 41.25%
Properties: Leaflets from alc, mp 141.5°.
Melting point: mp 141.5°