Synonym: Barium bis(pentamethylcyclopentadienyl), Ba(Me5Cp)2

CAS Number 112379-49-4 | MDL Number MFCD00151386 

Ba(Me5Cp)2 Chemical Structure

Product codeBA9494
CAS number112379-49-4
Assay (purity)98%+
Purity methodby integration NMR H1
NMRconforms to structure
Molecular weight407.78 g/mol
Appearancewhite to off-white powder
Melting point>230 °C
Sensitivityair, moisture
Molecular formulaBaC20H30
Linear formulaBaC20H30
Packagingglassware/metal containers/bubblers

Barium pentamethylcyclopentadienyl is applied as a precursor for atomic layer deposition and chemical vapor deposition (ALD/CVD). 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 Bis(pentametylcyclopentadienyl)barium contact us at

Safety information

Hazardous class6.1
Packing groupIII
Signal wordWARNING
Hazard statementsH302-H315-H320-H335
Precautionary statementsP231-P222
Transport descriptionBARIUM COMPOUNDS, N.O.S (Bis (pentamethyl-η5-cyclopentadienyl) barium(II))
In TSCA registryNo (sold for research and development usage only)

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 Bis(pentametylcyclopentadienyl)barium below please contact customer support at

Lot# 003/583

External identifiers for Ba(Me5Cp)2

Pubchem CID92043188
IUPAC Namebarium; 1,2,3,4,5-pentamethylcyclopenta-1,3-diene
InchI IdentifierInChI=1S/2C10H15.Ba/c2*1-6-7(2)9(4)10(5)8(6)3;/h2*1-5H3;

Known applications and external links

With Bis(pentametylcyclopentadienyl)barium other customers often ask:

Ereztech synthesizes and sells additional BA-compounds.

To purchase Bis(pentametylcyclopentadienyl)barium contact us at