3,5-Dichlorobenzoic acid

3,5-Dichlorobenzoic acid Basic information
Product Name:3,5-Dichlorobenzoic acid
Synonyms:BENZOIC ACID, 3,5-DICHLORO-;BUTTPARK 45\07-34;RARECHEM AL BO 0040;3.5-Dichlorobe;3, 5-Dichlorobenzoic acid, MTBE;3,5-Dichlorobenzoic Acid Standard;3,5-Dichlorobenzoic acid Solution, 100ppm;3,5-Dichlorobenzoic Acid, 97+%
CAS:51-36-5
MF:C7H4Cl2O2
MW:191.01
EINECS:200-092-4
Product Categories:Building Blocks;Carbonyl Compounds;FINE Chemical & INTERMEDIATES;Carboxylic Acids;Chemical Synthesis;Organic Building Blocks;Aromatic Carboxylic Acids, Amides, Anilides, Anhydrides & Salts;Organic acids;C7;Alpha sort;D;DAlphabetic;DIA - DIC;Pesticides&Metabolites;Carbonyl Compounds;Carboxylic Acids;500 Series Drinking Water Methods;DIA - DICEPA;Method 552;Volatiles/ Semivolatiles;bc0001
Mol File:51-36-5.mol
3,5-Dichlorobenzoic acid Structure
3,5-Dichlorobenzoic acid Chemical Properties
Melting point 184-187 °C (lit.)
Boiling point 273.68°C (rough estimate)
density 1.4410 (rough estimate)
refractive index 1.4590 (estimate)
storage temp. Sealed in dry,Room Temperature
pka3.46±0.10(Predicted)
form powder to crystal
color White to Almost white
Water Solubility 147.1mg/L(temperature not stated)
BRN 2044776
InChIInChI=1S/C7H4Cl2O2/c8-5-1-4(7(10)11)2-6(9)3-5/h1-3H,(H,10,11)
InChIKeyCXKCZFDUOYMOOP-UHFFFAOYSA-N
SMILESC(O)(=O)C1=CC(Cl)=CC(Cl)=C1
CAS DataBase Reference51-36-5(CAS DataBase Reference)
NIST Chemistry Reference3,5-Dichlorobenzoic acid(51-36-5)
EPA Substance Registry System3,5-Dichlorobenzoic acid (51-36-5)
Safety Information
Hazard Codes Xi
Risk Statements 36/37/38
Safety Statements 26-37/39
WGK Germany 3
RTECS DG7350000
HazardClass IRRITANT
HS Code 29163990
Toxicitymouse,LD50,intraperitoneal,237mg/kg (237mg/kg),BEHAVIORAL: REGIDITYBEHAVIORAL: MUSCLE CONTRACTION OR SPASTICITY),Journal of Medicinal Chemistry. Vol. 11, Pg. 1020, 1968.
MSDS Information
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3,5-Dichlorobenzoic acid Usage And Synthesis
Chemical PropertiesWhite to beige powder
Uses3,5-Dichlorobenzoic acid is used in organic synthesis and pesticide and pharmaceutical intermediates. It can be used to synthesize 3,5-Dichloro-N-(4-hydroxyphenethyl)benzamide and (3,5-Dichlorophenyl)-(4-fluorophenyl)methanone.
DefinitionChEBI: 3,5-dichlorobenzoic acid is a chlorobenzoic acid that is benzoic acid in which the ring hydrogens at positions 3 and 5 are substituted by chloro groups. It has a role as a herbicide and a metabolite. It is a chlorobenzoic acid and a dichlorobenzene. It derives from a benzoic acid. It is a conjugate acid of a 3,5-dichlorobenzoate.
PreparationSynthesis of 3,5-dichlorobenzoic acid: 200 parts of ethanol is slowly added to a solution, heated to 70°C, of the diazonium salt prepared as described in Example 1 from 412 parts of 3,5-dichloroanthranilic acid; elimination of nitrogen immediately takes place with evolution of heat. The mixture is stirred for another 15 minutes and 350 parts (92% of theory) of 3,5-dichlorobenzoic acid having a melting point of 176° to 178°C is isolated as described in Example 1.
Synthesis Reference(s)Journal of the American Chemical Society, 73, p. 455, 1951 DOI: 10.1021/ja01145a145
Purification MethodsCrystallise the acid from EtOH and sublime it in a vacuum. [Beilstein 9 IV 1008.] Aromatic acid impurities (to <0.05%) can be removed via the (±)--methylbenzylamine salt as described for 2,4-dichlorobenzoic acid [Ley & Yates Organic Process Research & Development 12 120 2008.]
3,5-Dichlorobenzoic acid Preparation Products And Raw materials
Preparation ProductsDicamba-->3-Chlorobenzoic acid-->2-Amino-5-chloro-3-methylbenzoic acid-->(E)-3,5-dichloro-4-(3-ethoxy-2-methyl-3-oxoprop-1-enyl)benzoic acid-->1,3-DICHLORO-5-(CHLOROMETHYL)BENZENE-->3',5'-Dichloroacetophenone-->3,5-DICHLORO-4'-FLUOROBENZOPHENONE-->3,5-dichloro-N-Methoxy-N-MethylbenzaMide
ETHYL 3,5-DICHLORO-4-HYDROXYBENZOATE 3,4,5,6-TETRACHLOROFLUORESCEIN 2-AMINO-3,5-DICHLOROBENZOIC ACID 3,5-Dichloro-4-hydroxybenzoic acid Dacthal Ethyl 2-(Chlorosulfonyl)acetate Ascoric Acid Tetrachlorophthalic anhydride 3,5-DICHLORO-4-AMINOBENZOIC ACID ETHYL ESTER 3,4-DICHLOROBENZOIC ACID 3,5-Dichlorobenzoic acid LABOTEST-BB LT00847222 METHYL 3,5-DICHLORO-4-HYDROXYBENZOATE Chlorthal ROSE BENGAL LACTONE Benzoic acid LABOTEST-BB LT00645564 3,5-Dichlorosalicylic acid

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