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Appearance:powder
Throughput:100|Kilogram|Day
pd_productuse:intermediate
Delivery Time:in stock
Purity:98% purity
4,5-DICHLOROPHTHALIC ACID Chemical Properties
Melting point 198-200 °C (dec.)(lit.)
Boiling point 422.1±45.0 °C(Predicted)
density 1.698±0.06 g/cm3(Predicted)
storage temp. Sealed in dry,Room Temperature
pka 2.35±0.10(Predicted)
InChIKey FDOQKGWUMUEJLX-UHFFFAOYSA-N
CAS DataBase Reference 56962-08-4(CAS DataBase Reference)
EPA Substance Registry System 1,2-Benzenedicarboxylic acid, 4,5-dichloro- (56962-08-4)
Safety Information
Hazard Codes Xi
Risk Statements 36/37/38
Safety Statements 22-24/25-26
WGK Germany 3
MSDS Information
Provider Language
SigmaAldrich English
4,5-DICHLOROPHTHALIC ACID Usage And Synthesis
Purification Methods Crystallise the acid from water. It has been purified by converting to the anhydride, reacting it with boiling EtOH to form the monoethyl ester (m 133-134o) and hydrolysing it back to the diacid (see next entry). [Beilstein 9 III 4205.]
4,5-DICHLOROPHTHALIC ACID Preparation Products And Raw materials
Raw materials 2,3-dichlorobuta-1,3-diene-->1-(4,5-Dichloro-2-Methylphenyl)ethanone-->dimethyl 4,5-dichlorophthalate-->1,2-Dichloro-4,5-diMethylbenzene-->Dichloromaleic anhydride-->Nitric acid
Preparation Products 4-Chlorophthalic acid-->4,5-DICHLOROPHTHALIC ANHYDRIDE
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