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| | 2,3-DIMETHYL-1,3-BUTADIENE Basic information |
| Product Name: | 2,3-DIMETHYL-1,3-BUTADIENE | | Synonyms: | 2,3-dimethyl-3-butadiene;2,3-Dimethylenebutane;2,3-Dimethylerythrene,Diiso-propenyl;2,3-DIMETHYL-BUTA-1,3-DIENE;2,3-DIMETHYL-1,3-BUTADIENE;Biisopropenyl;CH2=C(CH3)C(CH3)=CH2;Diisopropenyl | | CAS: | 513-81-5 | | MF: | C6H10 | | MW: | 82.14 | | EINECS: | 208-172-0 | | Product Categories: | Acyclic;Alkenes;Organic Building Blocks;DID - DINChemical Class;NeatsGasoline, Diesel,&Petroleum;Substance classes;Alpha Sort;D;DAlphabetic;Hydrocarbons;Olefins;Volatiles/ Semivolatiles | | Mol File: | 513-81-5.mol |  |
| | 2,3-DIMETHYL-1,3-BUTADIENE Chemical Properties |
| Melting point | ?76 °C (lit.) | | Boiling point | 68-69 °C (lit.) | | density | 0.726 g/mL at 25 °C (lit.) | | vapor pressure | 269 mm Hg ( 37.7 °C) | | refractive index | n20/D 1.438(lit.) | | Fp | −8 °F | | storage temp. | 2-8°C | | form | Liquid | | color | Clear colorless | | Water Solubility | Miscible with chloroform. Immiscible with water. | | Merck | 14,3238 | | BRN | 605285 | | CAS DataBase Reference | 513-81-5(CAS DataBase Reference) | | EPA Substance Registry System | 1,3-Butadiene, 2,3-dimethyl- (513-81-5) |
| Hazard Codes | F | | Risk Statements | 11 | | Safety Statements | 16-23 | | RIDADR | UN 3295 3/PG 2 | | WGK Germany | 3 | | F | 9 | | TSCA | Yes | | HazardClass | 3 | | PackingGroup | II | | HS Code | 29012900 |
| | 2,3-DIMETHYL-1,3-BUTADIENE Usage And Synthesis |
| Chemical Properties | Clear colorless liquid | | Uses | 2,3-Dimethyl-1,3-butadiene undergoes Diels Alder cycloaddition reaction and it also participates in polymerization reactions. It is also involved in manufacturing of synthetic rubber. | | General Description | 2,3-Dimethyl-1,3-butadiene (DMBD) is a conjugated diene. It undergoes Diels Alder cycloaddition reaction with 2-thio-3-chloroacrylamides under thermal, catalytic and microwave conditions. It undergoes thermal [4+2] cycloaddition reaction with 3-acetyl-, 3-carbamoyl and 3-ethoxycarbonylcoumarins under solvent free conditions. DMBD participates in polymerization reactions in the presence of iron dichloride complexes based catalysts. | | Purification Methods | Distil it from NaBH4, and purify it by zone melting. [Beilstein 1 IV 1023.] |
| | 2,3-DIMETHYL-1,3-BUTADIENE Preparation Products And Raw materials |
| Raw materials | Calcium chloride-->Hydroquinone-->Pinacol | | Preparation Products | TRIPHENYLMETHYL MERCAPTAN-->1,3-Pentadiene, 2-methyl-, (3Z)--->methoxymethanol-->3,4-Dimethylbenzoic acid-->METHYLPHENYLVINYLSILANE-->4-METHYL-1,3-PENTADIENE-->1,4-DIBROMO-2,3-BIS(BROMOMETHYL)-2-BUTENE-->2,3-Dimethyl-1-butene-->TETRAISOPROPYL ORTHOSILICATE-->DIPHENYLMETHYLETHOXYSILANE-->ALLYLOXYTRIMETHYLSILANE-->2,3,6,7-tetramethylnaphthalene |
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