3-Methyl-1,2-butadiene
Synonym(s):1,1-Dimethylallene
- CAS NO.：598-25-4
- Empirical Formula: C5H8
- Molecular Weight: 68.12
- MDL number: MFCD00008896
- EINECS: 209-926-1
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-09-12 18:54:07
What is 3-Methyl-1,2-butadiene?
The Uses of 3-Methyl-1,2-butadiene
3-Methyl-1,2-butadiene has been used to study the photo-induced reaction of 1,1-dimethylallene with the cyanoarenes 1,2,4,5-tetracyanobenzene, 1,4-dicyanobenzene and 1,4-dicyanonaphthalene in the presence of methanol as nucleophile.
The Uses of 3-Methyl-1,2-butadiene
3-Methyl-1,2-butadiene (1,1-dimethylallene) has been used to study the photo-induced reaction of 1,1-dimethylallene with the cyanoarenes 1,2,4,5-tetracyanobenzene, 1,4-dicyanobenzene and 1,4-dicyanonaphthalene in the presence of methanol as nucleophile.
Properties of 3-Methyl-1,2-butadiene
| Melting point: | -148 °C (lit.) |
| Boiling point: | 40-41 °C (lit.) |
| Density | 0.694 g/mL at 25 °C (lit.) |
| vapor pressure | 6.87 psi ( 20 °C) |
| refractive index | n |
| Flash point: | 10 °F |
| storage temp. | 2-8°C |
| solubility | Soluble in ether, benzene, acetone, ethanol. |
| form | clear liquid |
| color | Colorless to Almost colorless |
| Sensitive | Air Sensitive |
| BRN | 1697090 |
| CAS DataBase Reference | 598-25-4(CAS DataBase Reference) |
Safety information for 3-Methyl-1,2-butadiene
| Signal word | Danger |
| Pictogram(s) |
 Flame Flammables GHS02  Exclamation Mark Irritant GHS07  Health Hazard GHS08 |
| GHS Hazard Statements |
H225:Flammable liquids H304:Aspiration hazard H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P233:Keep container tightly closed. P331:Do NOT induce vomiting. P301+P310:IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for 3-Methyl-1,2-butadiene
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