Synonym: Ytterbium(III)-DPM, Yb(TMHD)3

CAS Number 15492-52-1 | MDL Number MFCD00000034 


Product codeYB2521
CAS number15492-52-1
Assay (purity)99%
Metal purity99.9%-Yb
Purity methodby titration: %Yb = 23.6 – 24.3 % (complexometric)
Molecular weight722.84 g/mol
Melting point167-169 °C (333-336 °F)
Boiling point300 °C (572 °F)
Appearanceoff-white powder or crystals
Molecular formulaYbC33H57O6
Linear formulaYb[OCC(CH3)3CHCOC(CH3)3]3
Packagingglassware/metal containers/bubblers

Tris(2,2,6,6-tetramethyl-3,5-heptanedionato)ytterbium possess the useful property of inducing large chemical shifts in the proton NMR spectra of certain compounds containing OH or other nucleophilic groups 1–8. The synthesis of this product is described in the literature. See links 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 YB2521 contact us at

Safety information

UNNot regulated
Hazardous classNot regulated
Packing groupNot regulated
Signal wordWARNING
Hazard statementsH315-H319-H335
Precautionary statementsP261-P264-P271-P280-P302 + P352-P304 + P340-P305 + P351 + P338-P312-P332 + P313-P337 + P313-P362
Transport descriptionNONH for all modes of transport
In TSCA registryYes

First Aid Measures

General adviceConsult a physician. Show this safety data sheet to the doctor in attendance. Move out of the dangerous area.
Eye contactRinse thoroughly with plenty of water for at least 15 minutes and consult a physician.
Skin contactWash off with soap and plenty of water. Consult a physician.
InhalationIf breathed in, move person into the fresh air. If not breathing, give artificial respiration. Consult a physician.
If swallowedDo NOT induce vomiting. Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician.


Certificates of Analysis (CoA)

If you don’t see the needed lot of Tris(2,2,6,6-tetramethyl-3,5-heptanedionato)ytterbium below please contact customer support at

Lot# 013/005 Lot# 019/307

External identifiers for Yb(TMHD)3

Pubchem CID11787441
IUPAC Name(Z)-5-hydroxy-2,2,6,6-tetramethylhept-4-en-3-one;ytterbium
InchI IdentifierInChI=1S/3C11H20O2.Yb/c3*1-10(2,3)8(12)7-9(13)11(4,5)6;/h3*7,12H,1-6H3;/b3*8-7-;

Known applications and external links

With Tris(2,2,6,6-tetramethyl-3,5-heptanedionato)ytterbium other customers often ask:

Ereztech synthesizes and sells additional YB-compounds.

To purchase YB2521 contact us at