3,6-Dichlorophthalic anhydride

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3,6-Dichlorophthalic anhydride Basic information

Product Name:
3,6-Dichlorophthalic anhydride
CAS:
4466-59-5
MF:
C8H2Cl2O3
MW:
217.01
EINECS:
224-733-2
Mol File:
4466-59-5.mol
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3,6-Dichlorophthalic anhydride Chemical Properties

Melting point:
188-190 °C(lit.)
Boiling point:
339.1°C (rough estimate)
Density 
1.5974 (estimate)
BRN 
164697
CAS DataBase Reference
4466-59-5(CAS DataBase Reference)
NIST Chemistry Reference
3,6-Dichloro-phthalic anhydride(4466-59-5)
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Safety Information

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-36
WGK Germany 
3
10-21

MSDS

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3,6-Dichlorophthalic anhydride Usage And Synthesis

Chemical Properties

off-white to white powder

Purification Methods

Boil the anhydride in xylene (allowing any vapours which would contain H2O to be removed, e.g. Dean and Stark trap), which causes any acid present to dehydrate to the anhydride, and cool. Recrystallise it from xylene [Villiger Chem Ber 42 3539 1909, Fedoorow Izv Akad Nauk SSSR Otd Khim Nauk 397 1948, Chem Abstr 1585 1948]. [Beilstein 17/11 V 260.]

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