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Hafnium(IV) tert-butoxide

Also known as: Hafnium tert-butoxide, Hafnium(IV) t-butoxide, Hafnium tetra-t-butoxide, HAFNIUM T-BUTOXIDE, HAFNIUM TERT-BUTOXIDE, HAFNIUM TETRA-T-BUTOXIDE, Tetratert-butoxyhafnium, hafnium(4+),2-methylpropan-2-olate

Hafnium(IV) tert-butoxide (CAS 2172-02-3) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C16H36HfO4 and a molecular weight of 470.94500 g/mol. Key properties include a boiling point of 90 °C5 mm Hg(lit.), a density of 1.166 g/mL at 25 °C(lit.) and a flash point of 28.3 °C. 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 Nov 2, 2026.

CAS No.
2172-02-3
Jingsj CID
J-1288-9
Molecular Formula
C16H36HfO4
Molecular Weight
470.94500 g/mol
Category
Alcohols
Last updated
11/2/2026
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Physicochemical Properties

Boiling Point90 °C5 mm Hg(lit.)
Density1.166 g/mL at 25 °C(lit.)
Flash Point28.3 °C
Exact Mass472.20800
PSA36.92000
LogP5.06320
Vapor Pressure46mmHg at 25°C
Refractive Indexn20/D 1.424(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

Customs & Trade Information

HS Code2915900090
Summary2915900090 other saturated acyclic monocarboxylic acids and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward) MFN tariff:5.5% General tariff:30.0%

Frequently Asked Questions

What is the CAS number of Hafnium(IV) tert-butoxide?

The CAS number of Hafnium(IV) tert-butoxide is 2172-02-3.

What are the molecular formula and molecular weight of Hafnium(IV) tert-butoxide?

Hafnium(IV) tert-butoxide has molecular formula C16H36HfO4 and molecular weight 470.94500 g/mol.

Is Hafnium(IV) tert-butoxide hazardous?

Hafnium(IV) tert-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:

How to cite: Jingsj. "Hafnium(IV) tert-butoxide (CAS 2172-02-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1288-9 (accessed 2026-11-07).

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