Hafnium tert-butoxide, 99.9%+

Name: Hafnium tert-butoxide, 99.9%+
Brand: Vaqora Chemicals
SKU: VQ-018367

About Hafnium tert-butoxide, 99.9%+

Listed under CAS 2172-02-3, Hafnium tert-butoxide is an electronic material available from Vaqora Chemicals with a typical assay of ≥99.9%. The compound has the formula C16H36HfO4, corresponding to a molecular weight of 470.9 g/mol. The IUPAC name is hafnium(4+). Tetrakis(2-methylpropan-2-olate). Alternative names: Hafnium(IV) tert-butoxide and hafnium(4+), 2-methylpropan-2-olate.

It is supplied as a colourless to dark yellow liquid. Reported physical data include a boiling point of 90 °C and a density of 1.166 g/mL at 25 °C. Keep containers tightly closed in a cool, well-ventilated area away from heat and ignition sources. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

It is commonly used for semiconductor research, electronic devices and thin films. Buyers come mainly from academic and industrial research and electronics and semiconductors.

Available in 5 g and 25 g packs, Hafnium tert-butoxide is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

Semiconductor research
Electronic devices
Thin films

Industries

Specifications & identifiers

Chemical identifiers
Product name	Hafnium tert-butoxide, 99.9%+
Catalogue No.	VQ-018367
CAS Number	2172-02-3
IUPAC name	hafnium(4+);tetrakis(2-methylpropan-2-olate)
Molecular formula	C₁₆H₃₆HfO₄
Molecular weight	470.9 g/mol
Exact mass	472.2079
Purity / assay	≥99.9%
HSN code	28261990
InChIKey	WZVIPWQGBBCHJP-UHFFFAOYSA-N
SMILES	CC(C)(C)[O-].CC(C)(C)[O-].CC(C)(C)[O-].CC(C)(C)[O-].[Hf+4]
PubChem CID	9934444

Physical properties
Physical form	Liquid
Appearance	Colourless to dark yellow liquid
Boiling point	90 °C
Density	1.166 g/mL at 25 °C
H-bond donors / acceptors	0 / 4
TPSA	92.2 Å²
Synonyms	Hafnium(IV) tert-butoxide, Hf(OtBu)4, Hafnium (IV) tert-butoxide, Hf[OC(Me)3]4, Tetrakis(tert-butoxy)hafnium, Hafnium tetrakis(2-methylpropan-2-olate)

Safety & hazard information (GHS)

Flammable

Harmful / irritant

Signal word: Danger

Hazard statements

H225Highly flammable liquid and vapor
H226Flammable liquid and vapor
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P210, P233, P240, P241, P242, P243, P261, P264, P264 + P265, P270, P271, P280, P301 + P317, P302 + P352, P303 + P361 + P353, P304 + P340, P305 + P351 + P338, P319, P321, P330, P332 + P317, P337 + P317, P362 + P364, P370 + P378

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Other grades of CAS 2172-02-3

Hafnium tert-butoxide, 99%

CAS: 2172-02-3
Formula: C₁₆H₃₆HfO₄
MW: 470.9 g/mol

VQ-018366

Frequently asked questions

What is the CAS number of Hafnium tert-butoxide, 99.9%+?

The CAS Registry Number of Hafnium tert-butoxide, 99.9%+ is 2172-02-3. It is also known as Hafnium(IV) tert-butoxide, Hf(OtBu)4, Hafnium (IV) tert-butoxide.

What is the molecular formula and molecular weight of Hafnium tert-butoxide, 99.9%+?

Hafnium tert-butoxide, 99.9%+ has the molecular formula C16H36HfO4 and a molecular weight of 470.9 g/mol.

Which grade and pack sizes of Hafnium tert-butoxide, 99.9%+ can I order?

We supply Hafnium tert-butoxide, 99.9%+ in (≥99.9%) grade, in 5 g, 25 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Hafnium tert-butoxide, 99.9%+?

Yes. Every lot of Hafnium tert-butoxide, 99.9%+ is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Hafnium tert-butoxide, 99.9%+ be shipped internationally?

Yes. Hafnium tert-butoxide, 99.9%+ is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.