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2,4-Dichlorobenzoic acid

2,4-Dichlorobenzoic acid
2,4-Dichlorobenzoic acid structure
Chemical Name:
2,4-Dichlorobenzoic acid
2,4-DCBA;'LGC' (1305);2.4-Dichlorobe;orbenzoic acid;AKOS BBS-00003747;Dichlorbenzoic aci;2,4-Dichlorobenzoic;RARECHEM AL BO 0324;2,4-Dichlorbenzoic a;furosemide iMpurit E
Molecular Formula:
Formula Weight:
MOL File:

2,4-Dichlorobenzoic acid Properties

Melting point:
157-160 °C (lit.)
Boiling point:
200 °C
1.4410 (rough estimate)
refractive index 
1.4590 (estimate)
storage temp. 
Sealed in dry,Room Temperature
ethanol: soluble1g/10 mL, clear, colorless
White to almost white
2.8 (0.36g/l, H2O, 15℃)
Water Solubility 
0.36 g/L (15 ºC)
Stable. Incompatible with strong oxidizing agents.
CAS DataBase Reference
50-84-0(CAS DataBase Reference)
EWG's Food Scores
NIST Chemistry Reference
2,4-Dichlorobenzoic acid(50-84-0)
EPA Substance Registry System
Benzoic acid, 2,4-dichloro- (50-84-0)
  • Risk and Safety Statements
Signal word  Warning
Hazard statements  H302-H315-H319-H335
Precautionary statements  P264-P270-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313-P501-P261-P280a-P304+P340-P405-P501a-P301+P312+P330-P305+P351+P338
Hazard Codes  Xn,Xi
Risk Statements  22-36/37/38
Safety Statements  26-36-37/39-22
WGK Germany  3
RTECS  DG6650000
Hazard Note  Irritant
HS Code  29163900

2,4-Dichlorobenzoic acid price More Price(38)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 139572 2,4-Dichlorobenzoic acid 98% 50-84-0 5g $20.9 2021-12-16 Buy
Sigma-Aldrich 139572 2,4-Dichlorobenzoic acid 98% 50-84-0 100g $31.3 2021-12-16 Buy
TCI Chemical D0337 2,4-Dichlorobenzoic Acid >97.0%(GC)(T) 50-84-0 25g $15 2021-12-16 Buy
TCI Chemical D0337 2,4-Dichlorobenzoic Acid >97.0%(GC)(T) 50-84-0 500g $76 2021-12-16 Buy
Alfa Aesar A12372 2,4-Dichlorobenzoic acid, 98% 50-84-0 1000g $99.4 2021-12-16 Buy

2,4-Dichlorobenzoic acid Chemical Properties,Uses,Production

Chemical Properties

white powder


2,4-Dichlorobenzoic Acid is a di-halogenated benzoic acid derivative and an intermediate in the synthesis of spirodiclofen (S682990), a tetronic acid acaricide fungicide used in controlling red mites.


2,4-Dichlorobenzoic acid is used as reagent during the synthesis of pyrimido[2?,1?:2,3]thiazolo[4,5-b]quinoxaline derivatives. It is also used as starting reagent during the synthesis of 1-(substituted)-1,4-dihydro-6-nitro-4-oxo-7-(sub-secondary amino)-quinoline-3-carboxylic acids.


ChEBI: A chlorobenzoic acid that is benzoic acid in which the ring hydrogens at positions 2 and 4 are substituted by chloro groups.

General Description

White to slightly yellowish powder.

Air & Water Reactions

Insoluble in water.

Reactivity Profile

2,4-Dichlorobenzoic acid is a halogenated carboxylic acid. Carboxylic acids donate hydrogen ions if a base is present to accept them. They react in this way with all bases, both organic (for example, the amines) and inorganic. Their reactions with bases, called "neutralizations", are accompanied by the evolution of substantial amounts of heat. Neutralization between an acid and a base produces water plus a salt. Carboxylic acids with six or fewer carbon atoms are freely or moderately soluble in water; those with more than six carbons are slightly soluble in water. Soluble carboxylic acid dissociate to an extent in water to yield hydrogen ions. The pH of solutions of carboxylic acids is therefore less than 7.0. Many insoluble carboxylic acids react rapidly with aqueous solutions containing a chemical base and dissolve as the neutralization generates a soluble salt. Carboxylic acids in aqueous solution and liquid or molten carboxylic acids can react with active metals to form gaseous hydrogen and a metal salt. Such reactions occur in principle for solid carboxylic acids as well, but are slow if the solid acid remains dry. Even "insoluble" carboxylic acids may absorb enough water from the air and dissolve sufficiently in 2,4-Dichlorobenzoic acid to corrode or dissolve iron, steel, and aluminum parts and containers. Carboxylic acids, like other acids, react with cyanide salts to generate gaseous hydrogen cyanide. The reaction is slower for dry, solid carboxylic acids. Insoluble carboxylic acids react with solutions of cyanides to cause the release of gaseous hydrogen cyanide. Flammable and/or toxic gases and heat are generated by the reaction of carboxylic acids with diazo compounds, dithiocarbamates, isocyanates, mercaptans, nitrides, and sulfides. Carboxylic acids, especially in aqueous solution, also react with sulfites, nitrites, thiosulfates (to give H2S and SO3), dithionites (SO2), to generate flammable and/or toxic gases and heat. Their reaction with carbonates and bicarbonates generates a harmless gas (carbon dioxide) but still heat. Like other organic compounds, carboxylic acids can be oxidized by strong oxidizing agents and reduced by strong reducing agents. These reactions generate heat. A wide variety of products is possible. Like other acids, carboxylic acids may initiate polymerization reactions; like other acids, they often catalyze (increase the rate of) chemical reactions.

Fire Hazard

Flash point data for 2,4-Dichlorobenzoic acid are not available; however, 2,4-Dichlorobenzoic acid is probably combustible.

Purification Methods

Crystallise the acid from aqueous EtOH (charcoal), then *benzene (charcoal). It can also be recrystallised from water. [Beilstein 9 IV 998.] It can be freed from isomeric acids (to <0.05%) via the (±)--methylbenzylamine salt as follows: dissolve the dichloro-acid (10g, 50.2mmol) in isopropanol (200mL), heat to 60o and add the (±)-benzylamine (5.49g, 45.3mmol), then stir it at 60o for 1hour. Cool the mixture to room temperature, filter the slurry, wash it with isopropanol (25mL) and dry it in vacuo at 40o overnight to give 79% of the salt with m 185.2o. Dissolve the salt (5g) in H2O (50mL) and MeOH (20mL), then heat to 60o and add concentrated HCl to pH <2.0. Cool the solution to room temperature add H2O (12mL), filter it, wash it with H2O (30mL) and dry it in vacuo at 40o overnight to give 94% of the acid with m 162.0o. [Ley & Yates Organic Process Research & Development 12 120 2008.]

2,4-Dichlorobenzoic acid Preparation Products And Raw materials

Raw materials

Preparation Products

2,4-Dichlorobenzoic acid Suppliers

Global( 384)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Capot Chemical Co.,Ltd.
+86(0)13336195806 +86-571-85586718
+86-571-85864795 China 20012 60
Henan DaKen Chemical CO.,LTD.
+86-371-66670886 China 15427 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693 China 22607 55
Guangzhou PI PI Biotech Inc
020-81716319; China 3283 55
Speranza Chemical Co., Ltd.
+86-755-33122716 CHINA 279 55
career henan chemical co
+86-0371-55982848 China 29954 58
+86 18953170293
+86 0531-67809011 CHINA 2940 58
Accela ChemBio Inc.
(+1)-858-876-1948 United States 19969 58
Hebei Guanlang Biotechnology Co., Ltd.
+8619930503282 China 5942 58
Standardpharm Co. Ltd.
86-714-3992388 United States 14344 58

View Lastest Price from 2,4-Dichlorobenzoic acid manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2022-01-20 2,4-Dichlorobenzoic acid
US $10.00 / KG 1KG 99% 300MT/year Speranza Chemical Co., Ltd.
2021-09-23 Furosemide Impurity E(EP)
US $0.00-0.00 / mg 10mg 90%+ 10g Guangzhou PI PI BIOTECH INC
2021-07-13 2,4-Dichlorobenzoic acid
US $15.00-10.00 / KG 1KG 99%+ HPLC Monthly supply of 1 ton Zhuozhou Wenxi import and Export Co., Ltd

2,4-Dichlorobenzoic acid Spectrum

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