4-Amino-2,3,5,6-tetrafluoropyridine
Also known as: 2,3,5,6-Tetrafluoropyridin-4-amine, 4-Aminotetrafluoropyridine, 2,3,5,6-Tetrafluoro-4-pyridinamine, 4-Pyridinamine, 2,3,5,6-tetrafluoro-, 4-AMINO-2,3,5,6-TETRAFLUOROPYRIDINE, 4-AMINO-2,3,5,6-TETRAFLUORROPYRIDINE
4-Amino-2,3,5,6-tetrafluoropyridine (CAS 1682-20-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H2F4N2 and a molecular weight of 166.076 g/mol. Key properties include a melting point of 85-87 °C(lit.), a boiling point of 208.3±35.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 79.8±25.9 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H312 — Harmful in contact with skin and H332 — Harmful if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1682-20-8
- Jingsj CID
- J-21156-3
- Molecular Formula
- C5H2F4N2
- Molecular Weight
- 166.076 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 85-87 °C(lit.) |
|---|---|
| Boiling Point | 208.3±35.0 °C at 760 mmHg |
| Density | 1.6±0.1 g/cm3 |
| Flash Point | 79.8±25.9 °C |
| Exact Mass | 166.015411 |
| PSA | 38.91000 |
| LogP | 1.96 |
| Vapor Pressure | 0.2±0.4 mmHg at 25°C |
| Refractive Index | 1.473 |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H312 — Harmful in contact with skin
- H332 — Harmful if inhaled
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2933399090 |
|---|---|
| Summary | 2933399090. other compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 4-Amino-2,3,5,6-tetrafluoropyridine?
The CAS number of 4-Amino-2,3,5,6-tetrafluoropyridine is 1682-20-8.
What are the molecular formula and molecular weight of 4-Amino-2,3,5,6-tetrafluoropyridine?
4-Amino-2,3,5,6-tetrafluoropyridine has molecular formula C5H2F4N2 and molecular weight 166.076 g/mol.
Is 4-Amino-2,3,5,6-tetrafluoropyridine hazardous?
4-Amino-2,3,5,6-tetrafluoropyridine has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H312 — Harmful in contact with skin; H332 — Harmful if inhaled.
What are the upstream and downstream products of 4-Amino-2,3,5,6-tetrafluoropyridine?
For 4-Amino-2,3,5,6-tetrafluoropyridine, Upstream Products: Pentafluoropyridine, 2,3,5,6-Tetrafluoro-4-hydrazinopyridine, Ammonia; Downstream Products: 4-amino-3,5-difluoropyridin-2(1H)-one, 4-Bromo-2,3,5,6-tetrafluoropyridine, 1-Amino-4-bromoanthraquinone.
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-Amino-2,3,5,6-tetrafluoropyridine (CAS 1682-20-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-21156-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.