ChemicalBook >> CAS DataBase List >>2,4-Dichlorophenylacetic acid
2,4-Dichlorophenylacetic acid
- CAS No.
- 19719-28-9
- Chemical Name:
- 2,4-Dichlorophenylacetic acid
- Synonyms
- DCAA;2-(2,4-dichlorophenyl)acetic acid;2,4-DCPA;2,4-dcaa acid;2.4-Dichloroph;RARECHEM AL BO 0113;TIMTEC-BB SBB003502;LABOTEST-BB LT00454968;Guanfacine Impurity 15;2,4-dcaa acid spike mix
- CBNumber:
- CB2139146
- Molecular Formula:
- C8H6Cl2O2
- Molecular Weight:
- 205.04
- MDL Number:
- MFCD00004318
- MOL File:
- 19719-28-9.mol
- MSDS File:
- SDS
- TDS File:
- TDS
Last updated:2026-05-27 23:55:58
| Melting point | 129-131 °C (lit.) |
|---|---|
| Boiling point | 294.45°C (rough estimate) |
| Density | 1.3806 (rough estimate) |
| refractive index | 1.5490 (estimate) |
| storage temp. | Sealed in dry,Room Temperature |
| solubility | methanol: 0.1 g/mL, clear |
| pka | 3.92±0.10(Predicted) |
| form | Crystalline Powder |
| color | White to pale yellow-beige |
| Water Solubility | SOLUBLE IN HOT WATER |
| BRN | 1948767 |
| InChI | 1S/C8H6Cl2O2/c9-6-2-1-5(3-8(11)12)7(10)4-6/h1-2,4H,3H2,(H,11,12) |
| InChIKey | GXMWLJKTGBZMBH-UHFFFAOYSA-N |
| SMILES | OC(=O)Cc1ccc(Cl)cc1Cl |
| LogP | -0.3-2.8 at 23℃ and pH2-7 |
| CAS DataBase Reference | 19719-28-9(CAS DataBase Reference) |
| FDA UNII | 15N730ND47 |
| NIST Chemistry Reference | 2,4-Dichlorophenylacetic acid(19719-28-9) |
| EPA Substance Registry System | 2,4-Dichlorophenylacetic acid (19719-28-9) |
| UNSPSC Code | 12352100 |
| NACRES | NA.22 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H315-H319-H335 | |||||||||
| Precautionary statements | P261-P264-P271-P280-P302+P352-P305+P351+P338 | |||||||||
| target organs | Respiratory system | |||||||||
| PPE | dust mask type N95 (US), Eyeshields, Gloves | |||||||||
| Hazard Codes | Xi | |||||||||
| Risk Statements | 36/37/38-67 | |||||||||
| Safety Statements | 26-36-37/39 | |||||||||
| WGK Germany | 3 | |||||||||
| HS Code | 29163990 | |||||||||
| Storage Class | 11 - Combustible Solids | |||||||||
| Hazard Classifications | Eye Irrit. 2 Skin Irrit. 2 STOT SE 3 |
|||||||||
| REACH Registrations | Inactive | |||||||||
| NFPA 704 |
|
2,4-Dichlorophenylacetic acid price More Price(69)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 259233 | 2,4-Dichlorophenylacetic acid 99% | 19719-28-9 | 10g | $51.8 | 2026-04-30 | Buy |
| Sigma-Aldrich | 259233 | 2,4-Dichlorophenylacetic acid 99% | 19719-28-9 | 50g | $180 | 2023-06-20 | Buy |
| TCI Chemical | D1812 | 2,4-Dichlorophenylacetic Acid >98.0%(T) | 19719-28-9 | 25g | $23 | 2026-04-30 | Buy |
| Usbiological | 273546 | 2,4-Dichlorophenylacetic acid Asreported | 19719-28-9 | 50g | $213 | 2026-06-03 | Buy |
| Usbiological | 273546 | 2,4-Dichlorophenylacetic acid Asreported | 19719-28-9 | 100g | $315 | 2026-06-03 | Buy |
2,4-Dichlorophenylacetic acid Chemical Properties, Uses, Production
Synthesis
In a 300 ml HC4 autoclave, at 20 bar carbon monoxide pressure and 130°C, a solution of 10 g of 5 g water [278 mmol] and 5 g of N-methylpyrrolidone was added to a solution of 49 g of 2,4-dichlorobenzyl chloride [252.5 mmol] and 18 mg of palladium chloride [0.1 mmol] in 105 g of N-methylpyrrolidone over 1 hour. The pressure was kept constant at 20 bar during the addition. After 16 hours, the mixture was further stirred to constant pressure. After cooling, N-methylpyrrolidone and hydrogen chloride were separated at 150°C and 200 mbar. The residue was added as a melt to water with parallel addition of 50% aqueous sodium hydroxide solution to maintain pH 10. A homogeneous solution was obtained and extracted with 20 ml xylene to remove organic soluble substances. The mixture was then acidified to pH 1 with approximately 30% aqueous hydrochloric acid solution, and 2,4-dichlorophenylacetic acid precipitated as a white solid.
The precipitated product was washed with water until the effluent had a constant pH. The washed product was dried at 100°C under reduced pressure to give 2,4-dichlorophenylacetic acid. Yield: 89%. GC purity: 100%. Melting point: 131-133°C.Uses
2,4-Dichlorophenylacetic Acid is a useful research chemical.
Chemical Properties
white to pale yellowish-beige crystalline powder
Uses
2,4-Dichlorophenylacetic acid has been used as internal standard in:
- determination of phenoxyalkanoic acid herbicides in blood by GC with electron-capture detection
- determination of 2-methyl-4-chlorophenoxyacetic acid (herbicide) in soils by GC technique
2,4-Dichlorophenylacetic acid Preparation Products And Raw materials
Raw materials
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Preparation Products
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Global Suppliers ( 488)
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| Meryer (Shanghai) Chemical Technology Co., Ltd. | 4006356688 18621169109 | market03@meryer.com | China | 40202 | 62 |
| future industrial shanghai co., ltd | 400-0066400 13621662912 | sales@jonln.com | China | 1989 | 65 |
| Alfa Aesar | 400-6106006 | saleschina@alfa-asia.com | China | 30103 | 84 |
| TAIYUAN RHF CO.,LTD. | +86 351 7031519 | sales@RHFChem.com | China | 2334 | 56 |
| TCI (Shanghai) Development Co., Ltd. | 021-67121386 | Sales-CN@TCIchemicals.com | China | 24512 | 81 |
| Energy Chemical | 400-0056266 | sales8178@energy-chemical.com | China | 44852 | 61 |
| Wuhan Chemwish Technology Co., Ltd | 86-027-67849912 | sales@chemwish.com | China | 35884 | 56 |
| Capot Chemical Co., Ltd | +86 (0) 571 85 58 67 18 | China | 18187 | 66 | |
| Beijing Ouhe Technology Co., Ltd | 13552068683 13522913783 | 2355560935@qq.com | China | 11777 | 60 |
View Latest Price from 2,4-Dichlorophenylacetic acid manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
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2026-09-30 | 2,4-Dichlorophenylacetic acid
19719-28-9
|
$5.00 | 1KG | 99% | 200mt/year | Jinan Finer Chemical Co., Ltd | |
 |
2026-09-02 | 2,4-Dichlorophenylacetic acid
19719-28-9
|
$5.00 | 1KG | 99% | Henan Fengda Chemical Co., Ltd | ||
 |
2026-05-28 | 2,4-Dichlorophenylacetic acid
19719-28-9
|
$8.70 | 10KG | 99% | 10000kg | Hebei Chuanghai Biotechnology Co,.LTD |
-
- 2,4-Dichlorophenylacetic acid
19719-28-9
- $5.00
- 99%
- Jinan Finer Chemical Co., Ltd
-
- 2,4-Dichlorophenylacetic acid
19719-28-9
- $5.00
- 99%
- Henan Fengda Chemical Co., Ltd
-
- 2,4-Dichlorophenylacetic acid
19719-28-9
- $8.70
- 99%
- Hebei Chuanghai Biotechnology Co,.LTD
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2,4-Dichlorophenylacetic acid (DCAA) @2.0 μg/mL in MeOH
2,4-DichlorophenylaceticAcid(2,4-DCAA),1000mg/L,1ml
2,4-DichlorophenylaceticAcid>
2,4-Dichlorophenylacetic Acid@1000 μg/mL in MeOH
2,4-DichlorophenylaceticAcid(2,4-DCAA),100mg/L,5x1ml
2,4-Dichlorophenylacetic acid @0.1 mg/mL in Acetone
2,4-Dichlorophenylacetic Acid@100 μg/mL in MeOH
2,4-DichlorophenylaceticAcid(2,4-DCAA),200mg/L,1ml
2,4-DichlorophenylaceticAcid(2,4-DCAA),5000mg/L,1ml
2,4-DichlorophenylaceticAcid(2,4-DCAA),2,000mg/L,1ml
2,4-DichlorophenylaceticAcid(2,4-DCAA),1,000ug/L,1ml
2,4-DichlorophenylaceticAcidSolution(Method8281Surrogate),1,000mg/L,1ml
2,4-Dichlorophenylacetic acid @100 μg/mL in AcCN
2,4-Dichlorophenylacetic acid @1000 μg/mL in Acetone
2,4-DichlorophenylaceticAcid(2,4-DCAA),2,000mg/L,5ml
2,4-Dichlorophenylacetic acid@2.0 μg/mL in Acetone
2,4-DichlorophenylaceticAcid(2,4-DCAA),5000mg/L,10x1ml
2,4-DichlorophenylaceticAcid(2,4-DCAA),100mg/L,1ml
2-(2,4-dichlorophenyl)aceticaci
2,4-dichlorophenacetic acid
Guanfacine Impurity 15
2,4-Dichlorophenylacetic acid Solution in Acetone
2,4-Dichlorophenylacetic acid Solution In T-Butylmethyl Ether
C12468000 2,4-DichlorophenyLacetiCacid
2-(2,4-dichlorophenyl)acetic acid
DCAA
19719-28-9
C8
Carbonyl Compounds
Carboxylic Acids
Building Blocks
Organic Building Blocks
Building Blocks
Carbonyl Compounds
Carboxylic Acids
Chemical Synthesis
