Synonym: Hafnium Acetylacetonate, Tetrakis(acetylacetonato)hafnium(IV), Tetrakis(2, 4-pentanedionato)hafnium(IV), Hafnium tetrakis[(2E)-4-oxo-2-penten-2-olate], Hf(acac)4
CAS Number 17475-67-1 | MDL Number MFCD00044997
| Product code | HF5671 |
| CAS number | 17475-67-1 |
| Assay (purity) | 97.5%+ |
| Metal purity | 99.5% – Hf |
| Purity method | by elemental analysis: % C = 40.7 – 42.8; % H = 4.8 – 5.0% |
| NMR H1 | conforms to structure |
| Molecular weight | 574.93 g/mol |
| Form | solid |
| Appearance | white to off-white powder |
| Melting point | 193 °C (379.4 °F) |
| Boiling point | 82 °C (179.6 °F) @ 1 mmHg |
| Sensitivity | air, moisture |
| Molecular formula | HfO8C20H28 |
| Linear formula | Hf(CH3COCHCOCH3)4 |
| Packaging | glassware/metal containers/bubblers |
Hafnium 2,4-pentanedionate can be used for CVD of HfO2, but requires high vaporization temperatures (~ 200°C) for sufficient evaporation. Also, a complete study of the catalytic activity of hafnium acetylacetonate catalysts in PBT synthesis was conducted in order to investigate any improvement in the process and/or in the properties of the final polymer with respect to the industrially used titanium tetrabutoxide (TBT) catalyst. Small scale polymerization and subsequent scale-up in higher capacity reactors showed that TBT-Hf(acac)4 mixed catalyst was more active with respect to TBT as a single catalyst. Decreases in polymerization time and THF formation were also observed, which in turn can improve the productivity of the whole process. Furthermore, for similar values of molecular weight, a lower melt viscosity (and thus better processability and crystallizability) was obtained by using a mixed catalyst. See link below
Ereztech manufactures and sells this product in small and bulk volumes. Glass ampules, bottles or metal ampules or bubblers are available for packaging. For additional analytical information or details about purchasing HF5671 contact us at sales@ereztech.com
| UN | Not regulated |
| Hazardous class | Not regulated |
| Packing group | Not regulated |
| Pictograms | |
| Signal word | WARNING |
| Hazard statements | H315-H319-H335 |
| Precautionary statements | P261-P264-P271-P280-P302+P352-P304+P340-P305+P351+P338-P332+P313-P362 |
| Transport description | Not applicable |
| In TSCA registry | No (sold for research and development usage only) |
| General advice | Consult a physician. Show this safety data sheet to the doctor in attendance. Move out of the dangerous area. |
| Eye contact | Rinse thoroughly with plenty of water for at least 15 minutes and consult a physician. |
| Skin contact | Wash off with soap and plenty of water. Consult a physician. |
| Inhalation | If breathed in, move person into the fresh air. If not breathing, give artificial respiration. Consult a physician. |
| If swallowed | Do NOT induce vomiting. Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician. |
If you don’t see the needed lot of Hafnium 2,4-pentanedionate below please contact customer support at sales@ereztech.com
Lot# 015/783 Lot# 015/804 Lot# 019/280 Lot# 040/003
| Pubchem CID | 21953595 |
| IUPAC Name | hafnium(4+); (Z)-4-oxopent-2-en-2-olate |
| SMILES | [Hf+4].O=C(C)\C=C(/[O-])C.[O-]\C(C)=C/C(C)=O.[O-]\C(C)=C/C(C)=O.[O-]\C(C)=C/C(C)=O |
| InchI Identifier | InChI=1S/4C5H8O2.Hf/c4*1-4(6)3-5(2)7;/h4*3,6H,1-2H3;/q;;;;+4/p-4/b4*4-3-; |
| InchI Key | MCFIMQJAFAOJPD-MTOQALJVSA-J |
Ereztech synthesizes and sells additional HF-compounds.
To purchase HF5671 contact us at sales@ereztech.com