4,5-DICHLOROPHTHALIC ACID CAS NO.56962-08-4

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                  
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
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