4-Fluorostyrene
Also known as: 1-ethenyl-4-fluorobenzene, 1-fluoro-4-vinylbenzene, p-fluorostyrene, styrene, p-fluoro-, 4-fluorostyrene (stabilized), Benzene, 1-ethenyl-4-fluoro-, EINECS 206-975-0, MFCD00000361
4-Fluorostyrene (CAS 405-99-2) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C8H7F and a molecular weight of 122.140 g/mol. Key properties include a melting point of -36--33°C, a boiling point of 145.3±9.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 26.7±0.0 °C. It is classified under GHS with signal word Warning and hazard statements H226 — Flammable liquid and vapour. It is listed by 2 suppliers, 1 of which publish reference prices, from 8.48 to 2,388.00 CNY. Record last updated Aug 21, 2026.
- CAS No.
- 405-99-2
- Jingsj CID
- J-30993-4
- Molecular Formula
- C8H7F
- Molecular Weight
- 122.140 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
In Stock | 97% 25g | ¥212.00 | $1.27 /gBest ¥8.48/g CNY | CN China MOQ 25g | |
In Stock | 97% 5g | ¥636.80 | $19.06 /g ¥127.36/g CNY | CN China MOQ 5g | |
In Stock | 97% 1g | ¥2,388.00 | $357.35 /g ¥2,388.00/g CNY | CN China MOQ 1g |
Physicochemical Properties
| Melting Point | -36--33°C |
|---|---|
| Boiling Point | 145.3±9.0 °C at 760 mmHg |
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 26.7±0.0 °C |
| Exact Mass | 122.053177 |
| LogP | 2.71 |
| Vapor Pressure | 6.2±0.3 mmHg at 25°C |
| Refractive Index | 1.534 |
| Storage Conditions | 2-8°C |
GHS Safety & Compliance
- H226 — Flammable liquid and vapour
Customs & Trade Information
| HS Code | 2903999090 |
|---|---|
| Summary | 2903999090 halogenated derivatives of aromatic hydrocarbons VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 4-Fluorostyrene?
The CAS number of 4-Fluorostyrene is 405-99-2.
What are the molecular formula and molecular weight of 4-Fluorostyrene?
4-Fluorostyrene has molecular formula C8H7F and molecular weight 122.140 g/mol.
Which suppliers offer 4-Fluorostyrene?
2 supplier(s) listed; reference unit price ¥8.48–2388.00 /g.
Is 4-Fluorostyrene hazardous?
4-Fluorostyrene has GHS signal word Warning and hazard statements H226 — Flammable liquid and vapour.
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-Fluorostyrene (CAS 405-99-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-30993-4 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.