Detail of "3867-55-8"

CAS Number:
3867-55-8
Name:
1,2,4-Benzenetricarbonyltrichloride
Molecular Structure:
Formula:
C₉H₃Cl₃O₃
Molecular Weight:
265.47732
Synonyms:
1,2,4-Benzenetricarbonylchloride (7CI,8CI);1,2,4-Benzenetricarboxylic acid trichloride;1,2,4-Tris(chlorocarbonyl)benzene;1,2,4-Tris(chloroformyl)benzene;Trimelliticacid chloride;Trimellitic acid trichloride;Trimellitic chloride;Trimellitictrichloride;Trimellitoyl chloride;Trimellityl trichloride;
EINECS:
223-386-4
Density:
1.574 g/cm³
Boiling Point:
376.4 °C at 760 mmHg
Flash Point:
159.1 °C

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4-(Chloroformyl)phthalic anhydride: 4-(Chloroformyl)phthalic anhydride. (Toray Industries, Inc., Japan). Jpn. Kokai Tokkyo Koho JP 58167580 A2 3 Oct 1983 Showa, 6 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C07D307-89. APPLICATION: JP 82-49203 29 Mar 1982. DOCUMENT TYPE: Patent CA Section: 35 (Chemistry of Synthetic High Polymers) Section cross-reference(s): 25 High-purity 4-(chloroformyl)phthalic anhydride (I) [1204-28-0] is prepd. by treating trimellitic anhydride (II) [552-30-7] with SOCl2 or COCl2, treating the products with H2O, carboxylic acids, carboxylic anhydrides, or org. sulfonic acids to convert any trimellitoyl trichloride (III) [3867-55-8] by-product to I, and fractionally distg. Thus, a mixt. of II 1000, SOCl2 1000, and DMF 5 g was refluxed 6 h and stripped to residual SOCl2 in vacuo to give a product contg. 552-30-7 and 7732-18-5 which are cas registry numbers are also used here. I 93.7, III 3.8, bis(chloroformyl)benzene (IV) 2.2, and other impurities 0.3%. The above product was treated with 15.6 g AcOH [64-19-7] at 110° for 1 h, stripped of volatile materials at 150°/40-60 mm for 30 min, and distd. to give 995 g of I fraction b2 150-155° contg. III 0.3, IV 0.6, and other impurities 0.1%. .