4-Chlorformylphthalsaeureanhydrid

Bezeichnung:4-Chlorformylphthalsaeureanhydrid

CAS-Nr1204-28-0

Englisch Name:4-Chloroformylphthalic anhydride

CBNumberCB6124898

SummenformelC9H3ClO4

Molgewicht210.57

MOL-Datei1204-28-0.mol

Synonyma

4-Chlorformylphthalsaeureanhydrid

4-Chlorformylphthalsaeureanhydrid physikalisch-chemischer Eigenschaften

Schmelzpunkt	66-68 °C(lit.)
Siedepunkt	302.37°C (rough estimate)
Dichte	1.5015 (rough estimate)
Dampfdruck	0.017Pa at 20℃
Brechungsindex	1.4571 (estimate)
storage temp.	2-8°C
Löslichkeit	soluble in Chloroform
Aggregatzustand	powder to lump
Farbe	White to Almost white
Wasserlöslichkeit	decomposes
Sensitive	Moisture Sensitive
BRN	610823
InChI	1S/C9H3ClO4/c10-7(11)4-1-2-5-6(3-4)9(13)14-8(5)12/h1-3H
InChIKey	NJMOHBDCGXJLNJ-UHFFFAOYSA-N
SMILES	ClC(=O)c1ccc2C(=O)OC(=O)c2c1
CAS Datenbank	1204-28-0(CAS DataBase Reference)
NIST chemische Informationen	Phthalic , 4-(chloroformyl)-,anhydride(1204-28-0)
EPA chemische Informationen	5-Isobenzofurancarbonyl chloride, 1,3-dihydro-1,3-dioxo- (1204-28-0)

Sicherheit

Kennzeichnung gefährlicher	C
R-Sätze:	34-29
S-Sätze:	26-36/37/39-45
RIDADR	UN 3261 8/PG 2
WGK Germany	3
F	10-21
TSCA	TSCA listed
HazardClass	8
PackingGroup	II
HS Code	29173990
Speicherklasse	8A - Combustible corrosive hazardous materials
Hazard Classifications	Eye Dam. 1 Skin Corr. 1B

Gefahreninformationscode (GHS)

4-Chloroformylphthalic anhydride Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R34:Verursacht Verätzungen.
R29:Entwickelt bei Berührung mit Wasser giftige Gase.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
Chemische Eigenschaften
white crystalline solid
Verwenden
Trimellitic Anhydride Chloride can be used as a reagent to synthesize optical polyamideimides.
Synthesis Reference(s)
The Journal of Organic Chemistry, 38, p. 2557, 1973 DOI: 10.1021/jo00954a034
Flammability and Explosibility
Not classified
Synthese

552-30-7

1204-28-0

The general procedure for the synthesis of 1,3-dioxo-1,3-dihydroisobenzofuran-5-carbonyl chloride from trimellitic anhydride was as follows: trimellitic anhydride (50 g) and cyclohexane (45 mL) were added to a reaction flask containing 4-dimethylaminopyridine (0.05 g), and heated to 90 °C. Subsequently, thionyl chloride (37.2 g, molar ratio of trimellitic anhydride to thionyl chloride 1:1.2) was added slowly and the reaction mixture was refluxed for 6 hours. Upon completion of the reaction, it was confirmed that no gas was produced. At the end of the reaction, the remaining cyclohexane and excess thionyl chloride were removed by distillation at 90 °C and the solution was recovered at -0.085 MPa. Next, the 180-190 °C fraction was collected by vacuum distillation (vacuum of 750 mmHg) to give trimellitic anhydride chloride (47.6 g). After cooling, the product was a white solid with a melting point of 67.5~68.8 °C, and the HPLC purity was 99.5% in 86.9% yield.
Einzelnachweise
[1] Patent: CN103626729, 2016, B. Location in patent: Paragraph 0026; 0027
[2] Patent: CN106748963, 2017, A. Location in patent: Paragraph 0048; 0049; 0050; 0051
[3] Patent: CN108341796, 2018, A. Location in patent: Paragraph 0016; 0017; 0018; 0019; 0020; 0021
[4] Patent: US10093929, 2018, B2. Location in patent: Page/Page column 2-3

4-Chloroformylphthalic anhydride Upstream-Materialien And Downstream Produkte

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