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4-tert-Butylpyridine

4-叔丁基吡啶

Also known as: 4-TERT-BUTYLPYRIDINE, 4-T-BUTYLPYRIDINE, P-TERT-BUTYL PYRIDINE, 4-(1,1-Dimethylethyl)pyridine, 4-(2-Methyl-2-propanyl)pyridine, p-tert-Butylpyridine, Pyridine, 4-tert-butyl-

4-tert-Butylpyridine (CAS 3978-81-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H13N and a molecular weight of 135.206 g/mol. It is also known as 4-TERT-BUTYLPYRIDINE, 4-T-BUTYLPYRIDINE and P-TERT-BUTYL PYRIDINE. Key properties include a boiling point of 196-197 ºC, a density of 0.923 and a flash point of 67 ºC. 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.
3978-81-2
Jingsj CID
J-4134-2
Molecular Formula
C9H13N
Chinese Name
4-叔丁基吡啶
Molecular Weight
135.206 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point196-197 ºC
Density0.923
Flash Point67 ºC
Exact Mass135.104797
PSA12.89000
LogP2.41
Vapor Pressure0.5±0.4 mmHg at 25°C
Refractive Index1.495

GHS Safety & Compliance

IrritantSignal word: Warning
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Customs & Trade Information

HS Code2933399090
Summary2933399090. 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-tert-Butylpyridine?

The CAS number of 4-tert-Butylpyridine is 3978-81-2.

What are the molecular formula and molecular weight of 4-tert-Butylpyridine?

4-tert-Butylpyridine has molecular formula C9H13N and molecular weight 135.206 g/mol.

Is 4-tert-Butylpyridine hazardous?

4-tert-Butylpyridine 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 4-tert-Butylpyridine?

For 4-tert-Butylpyridine, Upstream Products: 4-tert-Butylpyridine 1-oxide, Pyridine, 4-Methylpyridine; Downstream Products: Cyclohexanone, 4-tert-butylpiperidine, 4-tert-Butylpyridine 1-oxide.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "4-tert-Butylpyridine (CAS 3978-81-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-4134-2 (accessed 2026-10-28).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.