3031-15-0

Basic information

• Product Name: 1,2,3,4-TETRAMETHYLNAPHTHALENE
• Synonyms: 1,2,3,4-TETRAMETHYLNAPHTHALENE
• CAS NO: 3031-15-0
• Molecular Formula: C₁₄H₁₆
• Molecular Weight: 184.28
• Mol File: 3031-15-0.mol
• Article Data: 5

Chemical Properties

• Melting Point: 106°C
• Boiling Point: 288.25°C (estimate)
• Appearance: /
• Density: 0.9844 (estimate)
• Refractive Index: 1.5855 (estimate)
• CAS DataBase Reference: 1,2,3,4-TETRAMETHYLNAPHTHALENE(CAS DataBase Reference)
• NIST Chemistry Reference: 1,2,3,4-TETRAMETHYLNAPHTHALENE(3031-15-0)
• EPA Substance Registry System: 1,2,3,4-TETRAMETHYLNAPHTHALENE(3031-15-0)

Safety Data

• Hazardous Substances Data: 3031-15-0(Hazardous Substances Data)

Usage

Type of compound

Polycyclic aromatic hydrocarbon

Structure

Composed of four methyl groups attached to a naphthalene ring structure

Physical state

Colorless, aromatic liquid

Molecular weight

182.26 g/mol

Uses

Building block in the production of various chemicals and materials, including polymers, dyes, and pharmaceuticals

Solubility

Low solubility in water

Toxicity

Low acute toxicity

Hazards

Can cause irritation to the skin, eyes, and respiratory system upon exposure

Safety

Proper safety protocols should be followed to minimize the risk of adverse health effects.

Upstream product

• 66312-03-6 2,3,4,5-Tetramethyltetracyclo<4.4.0.0^2,4.0^3,5>deca-7,9-dien-1,6-dicarbonsaeureanhydrid 
• 97585-93-8 Triphenyl-(1,3,4-trimethyl-naphthalen-2-ylmethyl)-phosphonium; chloride 
• 501-65-5 diphenyl acetylene 
• 109-99-9 tetrahydrofuran 
• 503-17-3 dimethylacetylene 
• 96820-47-2 oleanene-(12)-triol-(3β,21ξ,24) 
• 1121-05-7 2,3-dimethylcyclopent-2-enone 
• 187737-37-7 propene 
• 1193-18-6 3-methylcyclohexen-2-one 

Downstream Products

• 34163-25-2 6-Benzoyl-1,2,3,4-tetramethyl-naphthalin 
• 517-60-2 benzenehexacarboxylic acid 
• 93184-88-4 Ethyl 4-<(Z)-2-(1,2,3,4-tetramethyl-6-naphthyl)-propenyl>benzoate 
• 93184-87-3 Ethyl 4-<(E)-2-(1,2,3,4-tetramethyl-6-naphthyl)-propenyl>benzoate 

Relevant articles and documents

Reaction routes in catalytic reforming of poly(3-hydroxybutyrate) into renewable hydrocarbon oil

Poly(3-hydroxybutyrate) or PHB is an energy storage material of microbial organisms and can be reformed into hydrocarbon oils rich with aromatic compounds. This work investigated the main reaction routes from PHB to the key intermediates and final hydrocarbons. The main sequential reactions under catalysis of phosphoric acid at moderate temperatures (200-230 °C) consist of: (1) decomposition of PHB into crotonic acid, a major monomeric intermediate, (2) deoxygenation of crotonic acid, and (3) combination of the deoxygenated molecules. The oxygen in PHB is removed as CO2 and H2O in stage (2), involving decarboxylation and ketonization of crotonic acid. The main aromatic compounds are formed in stage (3) from propylene and 2,3-dimethyl-2-cyclopenten-1-one as two key intermediates, the former from decarboxylation and the latter from ketonization of crotonic acid. The reaction routes reveal that the formation of aromatics is affected to a great extent by the concentrations of phosphoric acid and water in the reaction, which can be used to control the composition of hydrocarbon oil.

PREPARATION AND REACTION OF A DISILYNE SYNTHON, 7,7'-BIS(7-METHYL-1,4,5,6-TETRAPHENYL-7-SILA-2,3-BENZO-NORBORNADIENE)

The title compound (2) was prepared by condensing a bis(silole) 1 with benzyne.Thermolysis of 2 in the presence of anthracene, 9,10-dimethylanthracene (DMA), 2,3-dimethylbutadiene, and two acetylenes is described in detail.X-ray structures for the anthrac

Small rings, 36. Attempts to Synthesize Tetramethyltetrahedrane from Alicyclic Precursors

Synthesis as well as the thermal and photochemical behaviour of compounds with ring skeletons 1 and 3 are described.Whereas the former are accessible by standard procedures the approach to the bicyclobutane derivatives is based on the isomerization of diester 1b into valence isomer 3b which can be achieved in good yield by SiO2 or Al2O3.There are only minor differences in the cleavage of the pairs 1/3 provoked by heating or photochemical excitation.This is even true for irradiations in argon at 10 K.Under those conditions anhydrides 1a and 3a form the samecharge transfer complex 28a between tetramethylcyclobutadiene and phthalic anhydride.A direct detection of tetramethyltetrahedrane using these means is not possible.