3,4-Dichlorobenzoic acid
- CAS No.
- 51-44-5
- Chemical Name:
- 3,4-Dichlorobenzoic acid
- Synonyms
- FUB-AKB;3,4-DCBA;207-209℃;Dichlorobenzoic Aci;RARECHEM AL BO 0329;3,4-Dichlorobenzoic;3,4-dichlorobenzoate;Furosemide Impurity 71;3,4-dichloro-benzoicaci;Pramipexole Impurity 73
- CBNumber:
- CB3489640
- Molecular Formula:
- C7H4Cl2O2
- Molecular Weight:
- 191.01
- MDL Number:
- MFCD00002492
- MOL File:
- 51-44-5.mol
- MSDS File:
- SDS
| Product description | Number | Pack Size | Price |
| 3,4-Dichlorobenzoic acid 99% | 144932 | 25g | $47.7 |
| 3,4-Dichlorobenzoic Acid >98.0%(GC)(T) | D0340 | 25g | $34 |
| 3,4-Dichlorobenzoic Acid >98.0%(GC)(T) | D0340 | 500g | $544 |
| 3,4-Dichlorobenzoic acid, min. 98% min.98% | 06-0087 | 25g | $36 |
| 3,4-Dichlorobenzoic acid, min. 98% min.98% | 06-0087 | 100g | $102 |
| More product size | |||
| Melting point | 204-206 °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 |
| pka | 3.60±0.10(Predicted) |
| form | powder to crystal |
| color | White to Almost white |
| Water Solubility | insoluble |
| BRN | 2044777 |
| Henry's Law Constant | 2.1×101 mol/(m3Pa) at 25℃, Abraham and Jr. (2019) |
| InChI | InChI=1S/C7H4Cl2O2/c8-5-2-1-4(7(10)11)3-6(5)9/h1-3H,(H,10,11) |
| InChIKey | VPHHJAOJUJHJKD-UHFFFAOYSA-N |
| SMILES | C(O)(=O)C1=CC=C(Cl)C(Cl)=C1 |
| CAS DataBase Reference | 51-44-5(CAS DataBase Reference) |
| FDA UNII | YS4ZR9BXWX |
| NIST Chemistry Reference | Benzoic acid, 3,4-dichloro-(51-44-5) |
| EPA Substance Registry System | 3,4-Dichlorobenzoic acid (51-44-5) |
| 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 | 36/37/38-37/38-36 | |||||||||
| Safety Statements | 26-36-37/39 | |||||||||
| WGK Germany | 3 | |||||||||
| RTECS | DG7175000 | |||||||||
| Hazard Note | Irritant | |||||||||
| TSCA | TSCA listed | |||||||||
| HS Code | 29163900 | |||||||||
| Storage Class | 11 - Combustible Solids | |||||||||
| Hazard Classifications | Eye Irrit. 2 Skin Irrit. 2 STOT SE 3 |
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| NFPA 704 |
|
3,4-Dichlorobenzoic acid price More Price(39)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 144932 | 3,4-Dichlorobenzoic acid 99% | 51-44-5 | 25g | $47.7 | 2026-04-30 | Buy |
| TCI Chemical | D0340 | 3,4-Dichlorobenzoic Acid >98.0%(GC)(T) | 51-44-5 | 25g | $34 | 2026-04-30 | Buy |
| TCI Chemical | D0340 | 3,4-Dichlorobenzoic Acid >98.0%(GC)(T) | 51-44-5 | 500g | $544 | 2021-12-16 | Buy |
| Strem Chemicals | 06-0087 | 3,4-Dichlorobenzoic acid, min. 98% min.98% | 51-44-5 | 25g | $36 | 2026-04-30 | Buy |
| Strem Chemicals | 06-0087 | 3,4-Dichlorobenzoic acid, min. 98% min.98% | 51-44-5 | 100g | $102 | 2026-04-30 | Buy |
3,4-Dichlorobenzoic acid Chemical Properties,Uses,Production
Chemical Properties
White to light yellow crystal powder
Uses
3,4-Dichlorobenzoic acid was employed as internal standard during the multiresidue analysis of pharmaceuticals and personal care products by ultra performance liquid chromatography-positive/negative electrospray tandem mass spectrometry. It was used to study the metabolic fate of 4-chloro-3,5-dinitrobenzoic acid.
Definition
ChEBI: A chlorobenzoic acid carrying chloro substituents at positions 3 and 4.
Synthesis Reference(s)
Journal of the American Chemical Society, 98, p. 843, 1976 DOI: 10.1021/ja00419a038
Safety Profile
Poison by subcutaneous route. When heated to decomposition it emits toxic fumes of Cl-.
Purification Methods
Crystallise the acid from aqueous EtOH (charcoal) or acetic acid. [Beilstein 9 IV 1006.] 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.]
3,4-Dichlorobenzoic acid Preparation Products And Raw materials
Raw materials
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Speranza Chemical Co., Ltd. | +86-86-075521030354 +8618688942810 | sophieliu@speranzachem.com | China | 923 | 55 |
| Hebei Chuanghai Biotechnology Co., Ltd | +8615531151365 | mina@chuanghaibio.com | China | 18126 | 58 |
| career henan chemical co | +86-0371-86658258 +8613203830695 | sales@coreychem.com | China | 29816 | 58 |
| Accela ChemBio Inc. | +1-858-6993322 | info@accelachem.com | United States | 21193 | 58 |
| Alchem Pharmtech,Inc. | 8485655694 | sales@alchempharmtech.com | United States | 63687 | 58 |
| Wuhan Chemwish Technology Co., Ltd | 027-67849912 | sales@chemwish.com | CHINA | 10821 | 58 |
| CONIER CHEM AND PHARMA LIMITED | +8618523575427 | sales@conier.com | China | 49979 | 58 |
| Fuxin Pharmaceutical | +86-021-021-50872116 +8613122107989 | contact@fuxinpharm.com | China | 10000 | 58 |
| Antai Fine Chemical Technology Co.,Limited | 18503026267 | info@antaichem.com | CHINA | 9636 | 58 |
| Hebei Yanxi Chemical Co., Ltd. | +8618531123677 | faithe@yan-xi.com | China | 5853 | 58 |
View Lastest Price from 3,4-Dichlorobenzoic acid manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-05-22 | 3,4-Dichlorobenzoic acid
51-44-5
|
US $85.00 / KG | 1KG | 99% | 300MT/year | Speranza Chemical Co., Ltd. | |
 |
2025-06-27 | 3,4-Dichlorobenzoic acid
51-44-5
|
US $0.00 / KG | 1KG | 99% | 500000kg | Hebei Chuanghai Biotechnology Co., Ltd | |
 |
2022-02-19 | 3,4-Dichlorobenzoic acid
51-44-5
|
US $0.00 / KG | 1KG | 98.5% | 100 tons | Honest Joy Holdings Limited |
-
- 3,4-Dichlorobenzoic acid
51-44-5
- US $85.00 / KG
- 99%
- Speranza Chemical Co., Ltd.
-
- 3,4-Dichlorobenzoic acid
51-44-5
- US $0.00 / KG
- 99%
- Hebei Chuanghai Biotechnology Co., Ltd
-
- 3,4-Dichlorobenzoic acid
51-44-5
- US $0.00 / KG
- 98.5%
- Honest Joy Holdings Limited
