144284-76-4

Basic information

• Product Name: 2,4,7-TRIMETHYL-1H-INDENE
• Synonyms: 2,4,7-TRIMETHYL-1H-INDENE;2,4,7-Trimethylindene
• CAS NO: 144284-76-4
• Molecular Formula: C₁₂H₁₄
• Molecular Weight: 158.243
• Product Categories: Indanone & Indene
• Mol File: 144284-76-4.mol

Chemical Properties

• Boiling Point: 245℃
• Flash Point: 97℃
• Appearance: /
• Density: 0.974
• Storage Temp.: under inert gas (nitrogen or Argon) at 2-8°C
• CAS DataBase Reference: 2,4,7-TRIMETHYL-1H-INDENE(CAS DataBase Reference)
• NIST Chemistry Reference: 2,4,7-TRIMETHYL-1H-INDENE(144284-76-4)
• EPA Substance Registry System: 2,4,7-TRIMETHYL-1H-INDENE(144284-76-4)

Safety Data

• Hazardous Substances Data: 144284-76-4(Hazardous Substances Data)

Usage

Uses

Used in Fragrance Production:
2,4,7-TRIMETHYL-1H-INDENE is used as a key ingredient in the production of fragrances for its aromatic properties, contributing to the creation of various scents in the perfumery and cosmetics industry.
Used as a Chemical Intermediate:
In the chemical industry, 2,4,7-TRIMETHYL-1H-INDENE serves as an intermediate for the synthesis of other organic compounds, facilitating the production of a range of chemical products.
Used in Dye Manufacturing:
2,4,7-TRIMETHYL-1H-INDENE is utilized in the manufacturing of dyes, where its chemical structure plays a role in the color development and stability of the dyes produced.
Used in Resin Production:
2,4,7-TRIMETHYL-1H-INDENE is also employed in the production of resins, where it contributes to the formation of polymers with specific properties required in various applications.
Used in Pharmaceutical Industry:
2,4,7-TRIMETHYL-1H-INDENE is used as a chemical intermediate in the synthesis of pharmaceuticals, aiding in the development of new drugs and medicinal compounds.
Safety Precautions:
Given its classification as a flammable liquid, 2,4,7-TRIMETHYL-1H-INDENE requires careful handling in well-ventilated areas, and it is imperative to adhere to proper safety measures when working with this chemical to prevent accidents and ensure the well-being of individuals in the vicinity.

Upstream product

• 166601-23-6 2,4,7-trimethyl-1-indanol 
• 89044-50-8 2,4,7-trimethyl-2,3-dihydro-1H-inden-1-one 
• 104-15-4 toluene-4-sulfonic acid 
• 105900-79-6 α-bromo(2,5-dimethylphenyl)-2-methylpropan-1-one 
• 106-42-3 para-xylene 
• 5445-46-5 1-(2,5-dimethylphenyl)-2-methyl-propane-1-one 
• 1057091-00-5 C₁₈H₃₀OSi 
• 96-39-9 methylcyclopentadiene 
• 110-13-4 2,5-hexanedione 

Relevant articles and documents

A method of preparation of ethylene-propylene-diene rubber

The invention discloses a bridged metallocene complex, which is characterized by having a structural formula shown as the following A1, A2, A3 or A4. The invention also discloses a preparation method of ethylene propylene rubber. The ethylene propylene ru

A bridge linking and its application of metal complexes

The invention discloses a bridged metallocene complex, which is characterized by having a structural formula shown as the following A1, A2, A3 or A4. The invention also discloses a preparation method of ethylene propylene rubber. The ethylene propylene ru

Siloxy substituted metallocene catalysts

The invention provides a compound of formula (I) or (II) wherein R 1 and R 2 are bound to adjacent carbon atoms and are taken together to form a group -X-SiR' 2 -Y-SiR' 2 -X- or -X-SiR' 2 -X-; each R', which may be the same or different, is a C 1-20 -hydrocarbyl group; each X, which may be the same or different, is O, S, NH; Y is a group X or a bond; each R 3 , which may be the same or different, is a ring substituent or two R 3 groups taken together can form a further optionally R 3 substituted ring (e.g. to form an optionally substituted fluorenyl structure); m is 0 to 5; and n is 0 to 3 and catalysts made using such compounds.

Process for the preparation of amorphous polymers of propylene

It is possible to prepare substantially amorphous polymers of propylene endowed with high molecular weights, operating at temperatures of industrial interest, by carrying out the polymerization reaction of propylene in the presence of metallocene catalysts comprising particular bis-indenyl or bis-4,5,6,7-tetrahydroindenyl compounds substituted in the 2-position on the indenyl or tetrahydroindenyl groups.

Crystal structure and propene polymerization characteristics of bridged zirconocene catalysts

The synthesis, crystal structure and propene polymerization behaviour of four bridged zirconocene dichlorides is presented.All catalysts are capable of isotactic propene polymerization.Methyl substitutions at the 2-, 4- and 7-positions of the bridged bis(indenyl)zirconocene dichlorides were introduced.The methyl substituent in the 7-position of the indenyl ring induces a significant steric interaction with the bridging group.On comparison of the 2,4,7-methyl substituted catalysts with their unsubstituted counterparts, only the ethylidene bridged catalyst rac-1,2-ethylidene- bis(2,4,7-trimethyl-1-indenyl)zirconium dichloride (4) is forced into the optimum geometry for isotactic propene polymerization.Owing to the steric bulk at the bridge catalyst 4 is very rigid with respect to the movement of the indenyl rings and the metal centre thus produces highly isotatic polypropene even up to high polymerization temperatures.Molecular mechanics calculations and temperature-dependent NMR measurements demonstrate that catalyst 4 is not able to equilibrate between the λ and δ conformational state as the corresponding rac-1,2-ethylidene-bis(-1-indenyl)zirconium dichloride (3) catalyst does.In the case of the catalyst isopropyliden(3-tert-butyl)cyclopentadienyl-9-fluorenyl)zirconium dichloride (6) the substitution in the 3-position changes the symmetry from Cs to C1.This catalyst produces isoactic polypropylene but with a decreased polymerization activity.Keywords: Zirconocene; Homogeneous Ziegler-Natta catalysis; Propene polymerization; Molecular mechanics calculations

Process for preparing cyclopentadienyl group-containing silicon compound or cyclopentadienyl group-containing germanium compound

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Process for the preparation of substituted indenes

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