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2,4-Dichlorobenzoic acid

2,4-Dichlorobenzoic acid
2,4-Dichlorobenzoic acid structure
CAS No.
50-84-0
Chemical Name:
2,4-Dichlorobenzoic acid
Synonyms
2,4-DCBA;'LGC' (1305);2.4-Dichlorobe;AKOS BBS-00003747;Dichlorbenzoic aci;RARECHEM AL BO 0324;2,4-Dichlorobenzoic;2,4-Dichlorbenzoic a;2,4-dichloro-benzoicaci;2,4-Dichlorbenzoic acid
CBNumber:
CB9255955
Molecular Formula:
C7H4Cl2O2
Formula Weight:
191.01
MOL File:
50-84-0.mol

2,4-Dichlorobenzoic acid Properties

Melting point:
157-160 °C(lit.)
Boiling point:
200 °C
Density 
1.4410 (rough estimate)
refractive index 
1.4590 (estimate)
storage temp. 
Store below +30°C.
solubility 
ethanol: soluble1g/10 mL, clear, colorless
form 
Powder
color 
White to almost white
PH
2.8 (0.36g/l, H2O, 15℃)
Water Solubility 
0.36 g/L (15 ºC)
BRN 
1868192
Stability:
Stable. Incompatible with strong oxidizing agents.
CAS DataBase Reference
50-84-0(CAS DataBase Reference)
EWG's Food Scores
2
FDA UNII
0SR0320D45
NIST Chemistry Reference
2,4-Dichlorobenzoic acid(50-84-0)
EPA Substance Registry System
Benzoic acid, 2,4-dichloro- (50-84-0)
SAFETY
  • Risk and Safety Statements
Symbol(GHS) 
GHS07
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
TSCA  Yes
HS Code  29163900

2,4-Dichlorobenzoic acid price More Price(7)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 139572 2,4-Dichlorobenzoic acid 98% 50-84-0 5g $20.4 2019-12-02 Buy
Sigma-Aldrich 139572 2,4-Dichlorobenzoic acid 98% 50-84-0 100g $24.2 2019-12-02 Buy
TCI Chemical D0337 2,4-Dichlorobenzoic Acid >97.0%(GC)(T) 50-84-0 25g $13 2020-06-24 Buy
TCI Chemical D0337 2,4-Dichlorobenzoic Acid >97.0%(GC)(T) 50-84-0 500g $70 2020-06-24 Buy
Alfa Aesar A12372 2,4-Dichlorobenzoic acid, 98% 50-84-0 1000g $94.8 2020-06-24 Buy

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

Chemical Properties

white powder

Uses

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.

Definition

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( 322)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Capot Chemical Co.,Ltd.
+86(0)13336195806 +86-571-85586718
+86-571-85864795 sales@capotchem.com China 19929 60
Henan DaKen Chemical CO.,LTD.
+86-371-55531817
info@dakenchem.com CHINA 21837 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com CHINA 22625 55
PI & PI BIOTECH INC.
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020-81716319 Sales@pipitech.com CHINA 3048 55
Speranza Chemical Co., Ltd.
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+86-755-33122716 sophieliu@speranzachem.com CHINA 309 55
career henan chemical co
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Accela ChemBio Inc.
(+1)-858-699-3322
(+1)-858-876-1948 info@accelachem.com United States 19988 58
Haihang Industry Co.,Ltd
86-531-88032799
+86 531 8582 1093 export@haihangchem.com CHINA 10157 58
QUALITY CONTROL CHEMICALS INC.
(323) 306-3136
(626) 453-0409 orders@qcchemical.com United States 8406 58

View Lastest Price from 2,4-Dichlorobenzoic acid manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2019-12-24 2,4-Dichlorobenzoic acid
50-84-0
US $10.00 / KG 1KG 99% 300MT/year Speranza Chemical Co., Ltd.
2018-12-21 2,4-Dichlorobenzoic acid
50-84-0
US $1.00 / kg 1g 99% 100KG career henan chemical co

2,4-Dichlorobenzoic acid Spectrum


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