2873-50-9

Basic information

• Product Name: 1,2,3-Butatriene
• Synonyms: 1,2,3-Butatriene
• CAS NO: 2873-50-9
• Molecular Formula: C₄H₄
• Molecular Weight: 52.07
• Mol File: 2873-50-9.mol
• Article Data: 7

Chemical Properties

• Melting Point: 299 °C (decomp)
• Boiling Point: 42.3°Cat760mmHg
• Flash Point: °C
• Appearance: /
• Density: 0.588g/cm³
• Vapor Pressure: 407mmHg at 25°C
• Refractive Index: 1.368
• CAS DataBase Reference: 1,2,3-Butatriene(CAS DataBase Reference)
• NIST Chemistry Reference: 1,2,3-Butatriene(2873-50-9)
• EPA Substance Registry System: 1,2,3-Butatriene(2873-50-9)

Safety Data

• Hazardous Substances Data: 2873-50-9(Hazardous Substances Data)

Usage

Physical state

Colorless gas

Solubility

Soluble in organic solvents

Odor

Distinct odor

Flammability

Highly flammable

Explosiveness

Potentially explosive

Reactivity

Highly reactive

Applications

Building block in organic synthesis

Specific compounds synthesized

Cyclobutene and cyclobutane derivatives

Safety precautions

Handled with extreme caution in laboratory settings and industrial applications

Importance

Versatile compound with significant applications in organic chemistry

InChI:InChI=1/C4H4/c1-3-4-2/h1-2H2

Upstream product

• 4383-39-5 Propiolsaeure-(2-propinyl)ester 
• 75-25-2 Bromoform 
• 74-99-7 prop-1-yne 
• 463-49-0 1,2-propanediene 
• 187737-37-7 propene 
• 3315-37-5 methylidyne 
• 7417-52-9 1,1-trimethyleneallene 
• 14296-80-1 1,2-dimethylenecyclobutane 
• 78-79-5 isoprene 
• 3968-30-7 5-cyclopentylidene-2,2-dimethyl-1,3-dioxane-4,6-dione 
• 2426-02-0 3,4,5,6-Tetrahydrophthalic anhydride 
• 821-10-3 1,4-Dichloro-2-butyne 

Downstream Products

• 59163-81-4 2-methylene-1-phenylbut-3-en-1-ol 
• 78808-42-1 2-methyl-1-phenylbuta-2,3-dien-1-ol 
• 503-17-3 dimethylacetylene 
• 590-19-2 2,3-dimethylbutene 
• 2219-66-1 1,4-dibromobut-2-yne 
• 78-94-4 methyl vinyl ketone 

Relevant articles and documents

Rate constants and the H atom branching ratio of the reactions of the methylidyne CH(X2Π) radical with C2H2, C2H4, C3H4 (methylacetylene and allene), C3H6 (

The reactions of the CH radical with several unsaturated hydrocarbons C2H2 (acetylene), C2H4 (ethylene), C3H4 (methyl-acetylene and allene), C3H 6 (propene) and C

Photoisomerization of bicyclopropylidene and 1,2-dimethylenecyclobutane in rare-gas matrices: Towards the IR-spectroscopic identification of tetramethyleneethane (2,3-dimethylenebutane-1,4-diyl)

Bicyclopropylidene (3) and 1,2-dimethylenecyclobutane (7) have been irradiated in rare-gas matrices. If 1,2-dimethylenecyclobutane (7) is exposed to the light of a KrF excimer laser (λ = 248 nm), an isomeric species is produced, showing an absorption at 793.1 cm-1 (argon matrix) or 791.2 cm- 1 (xenon matrix) in the IR spectrum. The back reaction can be induced with light of k λ = 254 nm. This photochemical interconversion, together with the comparison between the experimental and calculated band positions, supports the assignment of the IR absorption near 790 cm-1 to tetramethyleneethane (5).

The gasphase photolysis of 2-methy-1,3-butadiene at 123.6 nm

The gas-phase photolysis of 2-methyl-1,3-butadiene has been investigated using krypton (123.6 nm) resonance radiation.The observed neutral products of the primary decomposition were vinylacetilene, ethylene, acetylene, methylacetylene, propylene, allene, 2-methy-1-buten-3-yne, pentatriene/1-penten-3-yne, 1,3-butadiene, 2-butyne and butatriene, listed in decreasing order of concentration.There was also evidence of the presence of several radical fragments: CH2/CH3, C2H3, C3H3, and C4H5.Quantum yields for each of the products were determined in the photolysis of 2-methyl-1,3-butadiene, performed both in the presence and the absence of additives.Nitric oxide and oxygen were employed as radical scavengers, while hydrogen sulfide and hydrogen iodide were used as radical interceptors.Twelve primary, neutral molecule, reaction channels were proposed and the quantum efficiency assigned for each.The ionization efficiency of 2-methyl-1,3-butadiene was established as n = 0.55 at 10.03 eV.No products formed exclusively via an ion-molecule pathway were identified and therefore the fate of the C5H8+ ion was determined.