2,3-Dichlorobenzoic acid
- Product Name
- 2,3-Dichlorobenzoic acid
- CAS No.
- 50-45-3
- Chemical Name
- 2,3-Dichlorobenzoic acid
- Synonyms
- 2,3-Dichlorobenzoic;2,3-Dichlorbenzoesure;2,3-dichloro-benzoicaci;2,3-DICHLOROBENZOIC ACID pure;2,3-Dichlorobe;TIMTEC-BB SBB003641;RARECHEM AL BO 0323;2,3-dichlorobenzoate;3-Dichlorobenzoic acid;2,3-Dichorobenzoic acid
- CBNumber
- CB5227477
- Molecular Formula
- C7H4Cl2O2
- Formula Weight
- 191.01
- MOL File
- 50-45-3.mol
2,3-Dichlorobenzoic acid Property
- Melting point:
- 168-170 °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
- solubility
- Chloroform (Slightly), DMSO (Slightly), Methanol (Slightly)
- pka
- 2.53±0.25(Predicted)
- color
- White to Off-White
- Water Solubility
- slightly soluble
- BRN
- 1946217
- InChI
- InChI=1S/C7H4Cl2O2/c8-5-3-1-2-4(6(5)9)7(10)11/h1-3H,(H,10,11)
- InChIKey
- QAOJBHRZQQDFHA-UHFFFAOYSA-N
- SMILES
- C(O)(=O)C1=CC=CC(Cl)=C1Cl
- CAS DataBase Reference
- 50-45-3(CAS DataBase Reference)
- EPA Substance Registry System
- 2,3-Dichlorobenzoic acid (50-45-3)
Safety
- Hazard Codes
- Xi
- Risk Statements
- 36/37/38
- Safety Statements
- 26-37/39-36-24/25
- WGK Germany
- 2
- RTECS
- DG6475000
- HazardClass
- IRRITANT
- HS Code
- 29163990
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
- Precautionary statements
-
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
N-Bromosuccinimide Price
- Product number
- 225339
- Product name
- 2,3-Dichlorobenzoic acid
- Purity
- 97%
- Packaging
- 10g
- Price
- $38.6
- Updated
- 2024/03/01
- Product number
- 1356778
- Product name
- Lamotrigine Related Compound B
- Purity
- United States Pharmacopeia (USP) Reference Standard
- Packaging
- 20mg
- Price
- $1490
- Updated
- 2024/03/01
- Product number
- D3319
- Product name
- 2,3-Dichlorobenzoic Acid
- Purity
- >98.0%(GC)(T)
- Packaging
- 5g
- Price
- $32
- Updated
- 2024/03/01
- Product number
- D3319
- Product name
- 2,3-Dichlorobenzoic Acid
- Purity
- >98.0%(GC)(T)
- Packaging
- 25g
- Price
- $95
- Updated
- 2024/03/01
- Product number
- A10522
- Product name
- 2,3-Dichlorobenzoic acid, 98%
- Packaging
- 10g
- Price
- $62.65
- Updated
- 2024/03/01
2,3-Dichlorobenzoic acid Chemical Properties,Usage,Production
Chemical Properties
white to light yellow crystal powder
Uses
2,3-Dichlorobenzoic acid is the key intermediate for antiepileptic drug Lamotrigine (L173250) and other pharmaceuticals for the treatment of central nervous system (CNS) disorders and disease.
Definition
ChEBI: 2,3-dichlorobenzoic acid is a chlorobenzoic acid that is benzoic acid in which the ring hydrogens at positions 2 and 3 are substituted by chloro groups. It has a role as an impurity and a bacterial xenobiotic metabolite. It is a chlorobenzoic acid and a dichlorobenzene. It is functionally related to a benzoic acid. It is a conjugate acid of a 2,3-dichlorobenzoate.
General Description
2,3-Dichlorobenzoic acid is an intermediate metabolite of polychlorinated biphenyls (PCBs).
Synthesis
2,3-Dichlorobenzoic acid was prepared from 2,3-dichloroaniline by diazotization and Myerwine reaction to 2,3-dichlorobenzaldehyde, and then oxidized by potassium permanganate, with an overall yield of 45%.
Another synthesis of 2,3-dichlorobenzoic acid:
Step (a) A solution of 2,3-dichloroiodobenzene in sodium dried ether was added dropwise to magnesium turnings and a crystal of iodine with warming so as to form a Grignard reagent.
Step (b) The mixture of Step (a) was stirred and refluxed then cooled and transferred dropwise, under nitrogen, into a stirred mixture of sodium dried ether containing solid carbon dioxide.
Step (c) The mixture of Step (b) was stirred for 2 hours, left overnight to warm to room temperature, then treated with ice and aqueous hydrochloric acid, and the product extracted with ether. The combined ether extracts were washed with water then repeatedly extracted with an aqueous sodium hydroxide. These basic solutions were combined, stirred with activated charcoal for 10 minutes, filtered and the cooled filtrate was acidified with concentrated hydrochloric acid at lO.degree. C.
Step (d) The resultant solid was filtered off, washed with water (2.times.20 mis) and dried in vacuo. Yield 77.6%.
Purification Methods
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.] Crystallise the acid from H2O, aqueous EtOH, or 30% aqueous AcOH and several times from *C6H6, then dry it in vacuo at 40o overnight. The methyl ester has m 35-39o . [Hope & Riley J Chem Soc 123 2478 1923, Lock Monatsh Chem 90 687 1959, Shorter & Mather J Chem Soc 4744 1961, Beilstein 9 II 228, 9 IV 998.]
2,3-Dichlorobenzoic acid Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from 2,3-Dichlorobenzoic acid manufacturers
- Product
- 2,3-Dichlorobenzoic acid 50-45-3
- Price
- US $30.00/KG
- Min. Order
- 1KG
- Purity
- 99%
- Supply Ability
- 300MT/year
- Release date
- 2019-12-24
- Product
- 2,3-Dichlorobenzoic acid 50-45-3
- Price
- US $9.00/KG
- Min. Order
- 1KG
- Purity
- 99.9
- Supply Ability
- 1 ton
- Release date
- 2023-08-10
- Product
- 2,3-Dichlorobenzoic acid 50-45-3
- Price
- US $0.00/Kg/Bag
- Min. Order
- 1Kg/Bag
- Purity
- 99%
- Supply Ability
- 5000kg/month
- Release date
- 2021-10-13