ChemicalBook > CAS DataBase List > 2,4-Dichlorobenzoic acid

2,4-Dichlorobenzoic acid

Product Name
2,4-Dichlorobenzoic acid
CAS No.
50-84-0
Chemical Name
2,4-Dichlorobenzoic acid
Synonyms
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
CBNumber
CB9255955
Molecular Formula
C7H4Cl2O2
Formula Weight
191.01
MOL File
50-84-0.mol
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2,4-Dichlorobenzoic acid Property

Melting point:
157-160 °C (lit.)
Boiling point:
200 °C
Density 
1.4410 (rough estimate)
refractive index 
1.4590 (estimate)
storage temp. 
Sealed in dry,Room Temperature
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)
NIST Chemistry Reference
2,4-Dichlorobenzoic acid(50-84-0)
EPA Substance Registry System
Benzoic acid, 2,4-dichloro- (50-84-0)
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Safety

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
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H302Harmful if swallowed

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P405Store locked up.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
139572
Product name
2,4-Dichlorobenzoic acid
Purity
98%
Packaging
5g
Price
$20.9
Updated
2020/08/18
Sigma-Aldrich
Product number
139572
Product name
2,4-Dichlorobenzoic acid
Purity
98%
Packaging
100g
Price
$31.3
Updated
2020/08/18
TCI Chemical
Product number
D0337
Product name
2,4-Dichlorobenzoic Acid
Purity
>97.0%(GC)(T)
Packaging
25g
Price
$15
Updated
2021/03/22
TCI Chemical
Product number
D0337
Product name
2,4-Dichlorobenzoic Acid
Purity
>97.0%(GC)(T)
Packaging
500g
Price
$76
Updated
2021/03/22
Alfa Aesar
Product number
A12372
Product name
2,4-Dichlorobenzoic acid, 98%
Packaging
1000g
Price
$99.4
Updated
2021/03/22
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2,4-Dichlorobenzoic acid Chemical Properties,Usage,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.]

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2,4-Dichlorobenzoic acid Suppliers

Hubei Zhonglong Kangsheng fine chemical Co.,Ltd
Tel
027-83850299-
Fax
未打通加Q2315383731
Email
2315383731@qq.com
Country
China
ProdList
1608
Advantage
58
J & K SCIENTIFIC LTD.
Tel
010-82848833- ;010-82848833-
Fax
86-10-82849933
Email
jkinfo@jkchemical.com;market6@jkchemical.com
Country
China
ProdList
96815
Advantage
76
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
21-61259100-
Fax
86-21-61259102
Email
sh@meryer.com
Country
China
ProdList
40264
Advantage
62
future industrial shanghai co., ltd
Tel
400-0066-400;021-60496031
Fax
021-55660885
Email
sales@jonln.com;sales@jonln.com
Country
China
ProdList
1999
Advantage
65
Alfa Aesar
Tel
400-610-6006; 021-67582000
Fax
021-67582001/03/05
Email
saleschina@alfa-asia.com
Country
China
ProdList
30159
Advantage
84
TAIYUAN RHF CO.,LTD.
Tel
+86 351 7031519
Fax
+86 351 7031519
Email
sales@RHFChem.com
Country
China
ProdList
2346
Advantage
56
TCI (Shanghai) Development Co., Ltd.
Tel
021-67121386 / 800-988-0390
Fax
021-67121385
Email
Sales-CN@TCIchemicals.com
Country
China
ProdList
24555
Advantage
81
ShangHai DEMO Chemical Co.,Ltd
Tel
400-021-7337 qq:2355568890
Fax
0086-21-50182339
Email
sales@demochem.com; export1@demochem.com
Country
China
ProdList
2582
Advantage
57
Beijing dtftchem Technology Co., Ltd.
Tel
010-60275820-
Fax
010-60270825
Email
elainezt@sina.com
Country
China
ProdList
1401
Advantage
62
BeiJing Hwrk Chemicals Limted
Tel
0757-86329057-
Fax
0757-86311057
Email
sales.gd@hwrkchemical.com
Country
China
ProdList
17295
Advantage
55
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View Lastest Price from 2,4-Dichlorobenzoic acid manufacturers

Speranza Chemical Co., Ltd.
Product
2,4-Dichlorobenzoic acid 50-84-0
Price
US $10.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
300MT/year
Release date
2019-12-24
Guangzhou PI PI BIOTECH INC
Product
Furosemide Impurity E(EP) 50-84-0
Price
US $0.00-0.00/mg
Min. Order
10mg
Purity
90%+
Supply Ability
10g
Release date
2021-09-19
Zhuozhou Wenxi import and Export Co., Ltd
Product
2,4-Dichlorobenzoic acid 50-84-0
Price
US $15.00-10.00/KG
Min. Order
1KG
Purity
99%+ HPLC
Supply Ability
Monthly supply of 1 ton
Release date
2021-07-11

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