ChemicalBook CAS DataBase List 4-Chlorophthalic anhydride

4-Chlorophthalic anhydride synthesis

10synthesis methods

Product Name:4-Chlorophthalic anhydride
CAS Number:118-45-6
Molecular formula:C8H3ClO3
Molecular Weight:182.56

85-44-9 Synthesis

85-44-9
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$9.00/5g

118-45-6
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$6.00/5g

Yield:-

Reaction Conditions:

with chlorine in water at 70; for 12 h;

Steps:

1.1 step 1

310.8 g (2.1 mol) of phthalic anhydride and 2488 g of water were added to the reaction flask.Stir and disperse evenly at 70 ° C,149.1 g (2.1 mol) of chlorine gas was slowly introduced into the system under constant stirring.The reaction was continued for 12 hours.then,The temperature is lowered to room temperature and filtered.The filter cake was washed with 300 g of water.Then put it into the reaction bottle and vacuum dehydrate for 12 hours.Pour out and cool slowly,SatisfiedProcess requiredChlorophthalic anhydridesolid.

References:

CN108164452,2018,A Location in patent:Paragraph 0041; 0042

89-20-3 Synthesis