2809-69-0

Basic information

• Product Name: 2,4-HEXADIYNE
• Synonyms: CH3CequivCCequivCCH3;Dimethylbutadiyne;Dimethyldiacetylene;Hexa-2,4-diyne;2,4-HEXADIYNE
• CAS NO: 2809-69-0
• Molecular Formula: C₆H₆
• Molecular Weight: 78.11
• Product Categories: Acetylenes;Acetylenic Hydrocarbons
• Mol File: 2809-69-0.mol
• Article Data: 3

Chemical Properties

• Melting Point: 68°C
• Boiling Point: 127-129°C
• Flash Point: 127-129°C
• Appearance: /
• Density: 0.8155 (estimate)
• Vapor Pressure: 12.4mmHg at 25°C
• Refractive Index: 1.4426 (estimate)
• BRN: 1731159
• CAS DataBase Reference: 2,4-HEXADIYNE(CAS DataBase Reference)
• NIST Chemistry Reference: 2,4-HEXADIYNE(2809-69-0)
• EPA Substance Registry System: 2,4-HEXADIYNE(2809-69-0)

Safety Data

• Statements: 11
• Safety Statements: 16-22-33
• RIDADR: 1325
• HazardClass: 4.1
• PackingGroup: III
• Hazardous Substances Data: 2809-69-0(Hazardous Substances Data)

Usage

General Description

2,4-Hexadiyne is an organic compound represented by the formula C6H6. It is a member of the alkynes chemical family characterized by a carbon-carbon triple bond. This linear structure chemical is a conjugated diunsaturated compound with two acetylene groups. It's a colorless, volatile liquid at room temperature. Although it has relatively few industrial uses, it has been subject of chemical research, particularly in the development of novel polymers. Due to its highly unsaturated nature, it can be hazardous in certain conditions, as it is potentially explosive.

InChI:InChI=1/C6H6/c1-3-5-6-4-2/h1-2H3

Upstream product

• 1692-19-9 trimethyl(1-propynyl)stannane 
• 14003-08-8 trimethyl propynyl-germane 
• 4009-22-7 agropyrene 
• 1231-17-0 triphenyl tin ⁽¹⁺⁾; prop-1-yneide 
• 67-56-1 methanol 
• 201230-82-2 carbon monoxide 
• 74-99-7 prop-1-yne 
• 58443-86-0 1,2,5,6-tetrabromohexane 
• 110-86-1 pyridine 
• 590-93-2 2-Butynoic acid 

Downstream Products

• 61227-81-4 2.4.6-Tris(trimethylsilyl)-2.3-hexadien-5-in 
• 61227-85-8 2.4.6-Tris(tert-Butyldimethylsilyl)-2.3-hexadien-5-in 
• 60813-87-8 (Z)-2-Benzylmercapto-hex-2-en-4-in 
• 36229-87-5 2-Methyl-1,4-diphenyl-3-prop-1-ynyl-anthraquinone 
• 1185735-33-4 [5-((1'S,2'R,4'S,5'S)-2'-hydroxymethyl-1'-azabicyclo[2.2.2]oct-5'-yl)-3-methyl-4-prop-1-ynyl-biphenyl-2-yl]methylketone 
• 1313370-75-0 methyl 1-(4-bromophenyl)-2-methyl-3-(prop-1-yn-1-yl)cycloprop-2-enecarboxylate 
• 1391946-19-2 C₃₆H₃₃BF₁₅P 
• 20527-10-0 1-phenyl-2,5-dimethylarsole 
• 61255-23-0 1.2.4.6-Tetrakis(dimethylsilyl)-2.3-hexadien-5-in 
• 61255-22-9 2.4.6-Tris(dimethylsilyl)-2.3-hexadien-5-in 
• 61227-82-5 1.5.5-Tris(dimethylsilyl)-1.3-hexadiin 
• 61227-89-2 5,7-diethyl-5,6-decadien-3-yne 
• 61227-88-1 2.4-Diethyl-2.3-octadien-5-in 
• 61227-87-0 4.4-Diethyl-2.5-octadiin 

Relevant articles and documents

Catalytic metathesis of conjugated diynes

The tungsten benzylidyne complex [PhC≡W{OSi(OtBu)3} 3] efficiently catalyzes the metathesis of conjugated diynes and ring-closing diyne metathesis (see scheme). Although this reaction implies C-C single-bond activation, 13C labeling studies reveal that it proceeds by classical alkylidyne group exchange and involves cleavage and formation of carbon-carbon triple bonds. Copyright

Action du chlorure de fer(III) sur des acetyleniques substitues par des elements de la colonne IVB. Formation de diynes

We have studied the behaviour of mono- and diheterosubstituted acetylenies (1,2,3) in the presence of iron(III) chloride in a carbon tetrachloride-toluene medium at 25 deg C. 1: ; 2: ; 3: .The reaction always takes place in heterogeneous phase, the reaction medium being carefully kept free from air and humidity. Compounds of type 1. The reaction rate increases from the carbon compound to the stannyl compound. The germyl and stannyl acetylenics give 2,4-hexadiyne with good yields, respectively 62 and 84percent . Compounds of types 2 and 3. The influence of heterosubstituents on the reaction rate is the same as for compounds 1.For the mixed compound 3b, only one hexadiyne can be obtained with a yield of 90percent, gis(trimethylsilyl)buta-1,3-diyne.In the course of all these reactions, iron(III) is reduced into iron(II). The influence of the metal and its substituents as well as the action of iron chloride on the various conjugated diynes are discussed.A mechanism based on the respective reaction rates is suggested.