4-fluorophenoxyacetic acid
Also known as: p-Fluorophenoxyacetic acid, 2-(4-Fluorophenoxy)acetic acid, Acetic acid, (4-fluorophenoxy)-, Acetic acid, 2-(4-fluorophenoxy)-, AKOS AU36-M57, AKOS B013819, BUTTPARK 29\07-61, EINECS 206-974-5, MFCD00004304
4-fluorophenoxyacetic acid (CAS 405-79-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H7FO3 and a molecular weight of 170.138 g/mol. Key properties include a melting point of 104-104.5 °C(lit.), a boiling point of 295.2±15.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 132.4±20.4 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 405-79-8
- Jingsj CID
- J-4150-9
- Molecular Formula
- C8H7FO3
- Molecular Weight
- 170.138 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 104-104.5 °C(lit.) |
|---|---|
| Boiling Point | 295.2±15.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 132.4±20.4 °C |
| Exact Mass | 170.037918 |
| PSA | 46.53000 |
| LogP | 1.47 |
| Vapor Pressure | 0.0±0.7 mmHg at 25°C |
| Refractive Index | 1.520 |
Activity & Biological Data
| Additional Information | [1]. Burton R. Anderson. et al. Control of Annual Bluegrass and Crabgrass in Turf with Fluorophenoxyacetic Acids. Weed Science. January 1958 , pp. 52-58. [2]. Wanwan Wang, et al. Induction of Defense in Cereals by 4-fluorophenoxyacetic Acid Suppresses Insect Pest Populations and Increases Crop Yields in the Field. Proc Natl Acad Sci U S A. 2020 Jun 2;117(22):12017-12028. |
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Customs & Trade Information
| HS Code | 2918990090 |
|---|---|
| Summary | 2918990090. other carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 4-fluorophenoxyacetic acid?
The CAS number of 4-fluorophenoxyacetic acid is 405-79-8.
What are the molecular formula and molecular weight of 4-fluorophenoxyacetic acid?
4-fluorophenoxyacetic acid has molecular formula C8H7FO3 and molecular weight 170.138 g/mol.
What are the upstream and downstream products of 4-fluorophenoxyacetic acid?
For 4-fluorophenoxyacetic acid, Upstream Products: ethyl 2-(4-fluorophenoxy)acetate, 4-Fluorophenol, Chloroacetic acid; Downstream Products: (2-Chloro-4-fluorophenoxy)acetic acid, 6-Fluoro-2H-1,4-benzoxazin-3(4H)-one, 4-Fluorophenol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-fluorophenoxyacetic acid (CAS 405-79-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-4150-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.