Tantalum(V) butoxide

Also known as: Tantalum(V) n-butoxide, Tantalum pentabutanolate, Pentabutoxytantalum, Tantalum butoxide, butan-1-olate, tantalum(5+), Tantalum n-butoxide, Tantalum butoxide (V)99.

Tantalum(V) butoxide (CAS 51094-78-1) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C20H45O5Ta and a molecular weight of 546.51600 g/mol. Key properties include a boiling point of 117.7ºC at 760 mmHg, a density of 1.31 g/mL at 25ºC(lit.) and a flash point of 35ºC. It is classified under GHS with signal word Warning and hazard statements H226 — Flammable liquid and vapour, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 51094-78-1
Jingsj CID: J-1356139-8
Molecular Formula: C₂₀H₄₅O₅Ta
Molecular Weight: 546.51600 g/mol
Category: Alcohols
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	117.7ºC at 760 mmHg
Density	1.31 g/mL at 25ºC(lit.)
Flash Point	35ºC
Exact Mass	546.27500
PSA	46.15000
LogP	6.33700
Refractive Index	n20/D 1.483(lit.)

GHS Safety & Compliance

Flammable / IrritantSignal word: Warning

H226 — Flammable liquid and vapour
H315 — Causes skin irritation
H319 — Causes serious eye irritation
H335 — May cause respiratory irritation

Frequently Asked Questions

What is the CAS number of Tantalum(V) butoxide?

The CAS number of Tantalum(V) butoxide is 51094-78-1.

What are the molecular formula and molecular weight of Tantalum(V) butoxide?

Tantalum(V) butoxide has molecular formula C20H45O5Ta and molecular weight 546.51600 g/mol.

Is Tantalum(V) butoxide hazardous?

Tantalum(V) butoxide has GHS signal word Warning and hazard statements H226 — Flammable liquid and vapour; H315 — Causes skin irritation; H319 — Causes serious eye irritation.

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

Last updated: 8/21/2026

How to cite: Jingsj. "Tantalum(V) butoxide (CAS 51094-78-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1356139-8 (accessed 2026-11-07).

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