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CAS No 552-30-7 , 1,3-dioxo-2-benzofuran-5-carboxylic acid Search by region : China

  • Name: 1,3-dioxo-2-benzofuran-5-carboxylic acid
  • Synonyms: 552-30-7;Anhydrotrimellic acid;1,3-dioxo-2-benzofuran-5-carboxylic acid; Trimellic acid anhydride; 4-Carboxyphthalic anhydride; Anhydrotrimellitic acid; Trimellitic acid anhydride;
  • CAS Registry Number:
  • Melting Point: 164-169 ºC
  • Flash Point: 227 ºC
  • Boiling Point: 390 ºC
  • Density: 1.54
  • Refractive index: 1.662
  • Safety Statements: R37;R41;R42/43
  • Hazard Symbols: Xn: Harmful;
  • HS Code: 29173980
  • Flash Point: 227 ºC
  • EINECS: 209-008-0
  • Molecular Weight: 192.12506
  • InchiKey: SRPWOOOHEPICQU-UHFFFAOYSA-N
  • InChI: InChI=1S/C9H4O5/c10-7(11)4-1-2-5-6(3-4)9(13)14-8(5)12/h1-3H,(H,10,11)
  • Risk Statements: S22;S26;S36/37/39
  • Molecular Formula: C9H4O5
  • Molecular Structure:CAS No:552-30-7 1,3-dioxo-2-benzofuran-5-carboxylic acid

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References of 1,3-dioxo-2-benzofuran-5-carboxylic acid
Title: Trimellitic Anhydride
CAS Registry Number: 552-30-7
CAS Name: 1,3-Dihydro-1,3-dioxo-5-isobenzofurancarboxylic acid
Synonyms: trimellitic acid 1,2-anhydride; anhydrotrimellitic acid; 1,3-dioxo-5-phthalancarboxylic acid
Molecular Formula: C9H4O5
Molecular Weight: 192.13
Percent Composition: C 56.26%, H 2.10%, O 41.64%
Literature References: Prepd by subliming trimellitic acid above its mp: Alder, Dortmann, Ber. 85, 556 (1952); by heating crude trimellitic acid with V2O5: McKinnis, US 2998431 (1959 to Union Oil of Calif.).
Properties: Crystals, mp 161-163.5°. bp14 240-245°. Solubilities at 25° in g/100 g solvent: carbon tetrachloride 0.002; ligroin 0.06; mixed xylenes 0.4; dimethylformamide 15.5; acetone 49.6; ethyl acetate 21.6.
Melting point: mp 161-163.5°
Boiling point: bp14 240-245°
CAUTION: Potential symptoms of overexposure are irritation of eyes, skin, nose, respiratory system; pulmonary edema, respiratory sensitization; rhinitis, asthma, cough, wheezing, dyspnea, malaise, fever, muscle aches, sneezing. See NIOSH Pocket Guide to Chemical Hazards (DHHS/NIOSH 97-140, 1997) p 318.
Use: In the preparation of resins, adhesives, polymers, dyes, printing inks.