3,4-Dichlorobenzoic acid
Also known as: 3,4-Dichlorobenzoic acid, 3,4-DCBA, Benzoic acid, 3,4-dichloro-, NSC 17583, NSC 34414, Dichlorobenzoic Aci
3,4-Dichlorobenzoic acid (CAS 51-44-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H4Cl2O2 and a molecular weight of 191.012 g/mol. Key properties include a melting point of 204-206 °C(lit.), a boiling point of 317.8±22.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 146.0±22.3 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 51-44-5
- Jingsj CID
- J-8866-4
- Molecular Formula
- C7H4Cl2O2
- Molecular Weight
- 191.012 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 204-206 °C(lit.) |
|---|---|
| Boiling Point | 317.8±22.0 °C at 760 mmHg |
| Density | 1.5±0.1 g/cm3 |
| Flash Point | 146.0±22.3 °C |
| Exact Mass | 189.958832 |
| PSA | 37.30000 |
| LogP | 3.53 |
| Vapor Pressure | 0.0±0.7 mmHg at 25°C |
| Refractive Index | 1.599 |
| Additional Property | insoluble |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2916399090 |
|---|---|
| Summary | 2916399090 other aromatic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 3,4-Dichlorobenzoic acid?
The CAS number of 3,4-Dichlorobenzoic acid is 51-44-5.
What are the molecular formula and molecular weight of 3,4-Dichlorobenzoic acid?
3,4-Dichlorobenzoic acid has molecular formula C7H4Cl2O2 and molecular weight 191.012 g/mol.
Is 3,4-Dichlorobenzoic acid hazardous?
3,4-Dichlorobenzoic acid has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of 3,4-Dichlorobenzoic acid?
For 3,4-Dichlorobenzoic acid, Upstream Products: 3,4-Dichlorobenzyl alcohol, 3,4-Dichlorotoluene, 3,4-Dichlorobenzaldehyde; Downstream Products: Methyl 3-chloro-4-methoxybenzoate, 2,4,5-Trichlorobenzoic acid, 3-Chloro-4-methoxybenzoic acid.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3,4-Dichlorobenzoic acid (CAS 51-44-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-8866-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.