Synonym: Tetramethylcyclopentadiene

CAS Number 4249-10-9 | MDL Number MFCD00145385 

Tetramethylcyclopentadiene Chemical Structure

Product codeC9109
CAS number4249-10-9
Assay (purity)95%+
Purity methodmin. 95% (by GLC)
NMRconforms to structure
Molecular weight122.21 g/mol
Appearancecolorless to yellow liquid
Boiling point142.0 °C (287.6 °F)
Flash point42.0 °C (108 °F) – closed cup
Sensitivityair, moisture
Molecular formulaC9H14
Linear formulaC9H14
Packagingglassware/metal containers/bubblers

1,2,3,4-Tetramethyl-1,3-cyclopentadiene is a tetrasubstituted 1,3-cyclopentadiene. It participates in the synthesis of resin-bound tetramethylcyclopentadienes. This product has been applied for the nonsubstituted quinoline oligomers and polyquinoline-based conducting polymer thin films (200 – 2000Å) by the CVD-like technique called catalytic dehydrogenative polycondensation (CDHP), utilizing transition metal sulfides as catalysts. Highly thermal-oxidation-stable conducting polymers with excellent adhesion to the substrate surface were prepared; the films exhibited a low resistivity without chemical doping and high stability at elevated temperatures. C9H14 may be applied as a starting material in the synthesis of 1,7,8,9-tetramethyl-4-oxa-tricyclo[,6]dec-8-ene-3,5-dione. The synthesis of this product is widenly covered in 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 1,2,3,4-Tetramethyl-1,3-cyclopentadiene contact us at sales@ereztech.com

Safety information

Hazardous class3
Packing groupIII
Signal wordWARNING
Hazard statementsH226
Precautionary statementsP210-P233-p240-P241-P242-P243-P280
Transport descriptionHydrocarbons, liquid, N.O.S.
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 1,2,3,4-Tetramethyl-1,3-cyclopentadiene below please contact customer support at sales@ereztech.com

Lot# 029/163

External identifiers for Tetramethylcyclopentadiene

Pubchem CID138163
IUPAC Name1,2,3,4-tetramethylcyclopenta-1,3-diene
InchI IdentifierInChI=1S/C9H14/c1-6-5-7(2)9(4)8(6)3/h5H2,1-4H3

Known applications and external links

With 1,2,3,4-Tetramethyl-1,3-cyclopentadiene other customers often ask:

Ereztech synthesizes and sells additional C-compounds.

To purchase 1,2,3,4-Tetramethyl-1,3-cyclopentadiene contact us at sales@ereztech.com