1,2,3,4-Tetramethyl-1,3-cyclopentadiene

Synonym: Tetramethylcyclopentadiene

CAS Number 4249-10-9 | MDL Number MFCD00145385 

Product code	C9109
CAS number	4249-10-9
Assay (purity)	95%+
Purity method	min. 95% (by GLC)
NMR	conforms to structure
Molecular weight	122.21 g/mol
Form	liquid
Appearance	colorless to yellow liquid
Boiling point	142.0 °C (287.6 °F)
Flash point	42.0 °C (108 °F) – closed cup
Sensitivity	air, moisture
Molecular formula	C9H14
Linear formula	C9H14
Packaging	glassware/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[5.2.1.02,6]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

UN	3295
Hazardous class	3
Packing group	III
Pictograms
Signal word	WARNING
Hazard statements	H226
Precautionary statements	P210-P233-p240-P241-P242-P243-P280
Transport description	Hydrocarbons, liquid, N.O.S.
In TSCA registry	No (sold for research and development usage only)

First Aid Measures

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.

 

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 CID	138163
SMILES	CC1=C(C(=C(C1)C)C)C
IUPAC Name	1,2,3,4-tetramethylcyclopenta-1,3-diene
InchI Identifier	InChI=1S/C9H14/c1-6-5-7(2)9(4)8(6)3/h5H2,1-4H3
InchI Key	VNPQQEYMXYCAEZ-UHFFFAOYSA-N

Known applications and external links

• Elizabeth M. Ochoa, Alex W. Watson, Erin N. Fagnan, Robert D. Pike & Eric J. Watson Syntheses and Structures of Octamethylmetallocenes of Osmium
• L.Y Chiang, J.W Swirczewski, F Lai, D.P Goshorn, Synthetic Metals, Volume 42, Issues 1–2, 15 May 1991, Pages 1425–1431, Proceedings of the International Conference on Science and Technology of Synthetic Metals,  “New chemistry to the synthesis of quinoline oligomers and a CVD technique for high temperature conducting thin films”
• Charles P. Gibson, David S. Bem & Jeffrey E. Cortopassi Functionally substituted tetramethylcyclopentadienes: Synthesis of 1-(p-hydroxyphenyl)-2,3,4,5-tetramethylcyclopentadiene and its use in the synthesis of an organometallic polymer

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

• Ethylidenecyclohexane
• 2,2,6,6-Tetramethyl-3,5-heptanedione
• Tetraphenylcyclopentadienone

Ereztech synthesizes and sells additional C-compounds.

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