4,5-DICHLOROPHTHALIC ACID

4,5-DICHLOROPHTHALIC ACID Basic information

Product Name:	4,5-DICHLOROPHTHALIC ACID
Synonyms:	4,5-dichloro-2-benzenedicarboxylicacid;4,5-DICHLOROPHTHALIC ACID;DICHLOROPHTHALIC ACID;AKOS 92369;1.4,5-dichlorophthalicacid;4,5-Dichlorphthalsure;4 5-DICHLOROPHTHALIC ACID 97%(HPLC);4,5-Dichlorophthalicacid,99%
CAS:	56962-08-4
MF:	C8H4Cl2O4
MW:	235.02
EINECS:	260-478-3
Product Categories:	C8;Carbonyl Compounds;Carboxylic Acid Monomers;Monomers;Polymer Science;Carboxylic Acids
Mol File:	56962-08-4.mol

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
HS Code	2917399090

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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4,5-DICHLOROPHTHALIC ACID

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