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1,1,3,3-Tetramethylbutyl isocyanide

Also known as: tert-Octyl isocyanide, tert-Octyl isonitrile, 2-Isocyano-2,4,4-trimethylpentane, Walborsky's reagent, Walborsky reagent, 1,1,3,3-Tetramethylbutyl isonitrile

1,1,3,3-Tetramethylbutyl isocyanide (CAS 14542-93-9) is a compound in the Nitrogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C9H17N and a molecular weight of 139.23800 g/mol. Key properties include a boiling point of 55-57 °C11 mm Hg(lit.), a density of 0.794 g/mL at 25 °C(lit.) and a flash point of 51.7 °C. It is classified under GHS with signal word Warning and hazard statements H226 — Flammable liquid and vapour, H302 — Harmful if swallowed and H312 — Harmful in contact with skin. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.

CAS No.
14542-93-9
Jingsj CID
J-19206-8
Molecular Formula
C9H17N
Molecular Weight
139.23800 g/mol
Category
Nitrogen Compounds
Last updated
11/2/2026

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Physicochemical Properties

Boiling Point55-57 °C11 mm Hg(lit.)
Density0.794 g/mL at 25 °C(lit.)
Flash Point51.7 °C
Exact Mass139.13600
LogP2.35120
Vapor Pressure0.787mmHg at 25°C
Refractive Indexn20/D 1.422(lit.)

GHS Safety & Compliance

Flammable / IrritantSignal word: Warning
  • H226 — Flammable liquid and vapour
  • H302 — Harmful if swallowed
  • H312 — Harmful in contact with skin
  • H332 — Harmful if inhaled

Customs & Trade Information

HS Code2926909090
SummaryHS:2926909090 other nitrile-function compounds 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 1,1,3,3-Tetramethylbutyl isocyanide?

The CAS number of 1,1,3,3-Tetramethylbutyl isocyanide is 14542-93-9.

What are the molecular formula and molecular weight of 1,1,3,3-Tetramethylbutyl isocyanide?

1,1,3,3-Tetramethylbutyl isocyanide has molecular formula C9H17N and molecular weight 139.23800 g/mol.

Is 1,1,3,3-Tetramethylbutyl isocyanide hazardous?

1,1,3,3-Tetramethylbutyl isocyanide has GHS signal word Warning and hazard statements H226 — Flammable liquid and vapour; H302 — Harmful if swallowed; H312 — Harmful in contact with skin.

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

Last updated:

How to cite: Jingsj. "1,1,3,3-Tetramethylbutyl isocyanide (CAS 14542-93-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-19206-8 (accessed 2026-11-06).

Data for reference only; verify product details with suppliers before purchase.