Isoprene CAS 78-79-5
Isoprene (CAS 78-79-5), chemically known as 2-methyl-1,3-butadiene, is a vital organic chemical intermediate and a key monomer for synthetic elastomers. At room temperature and pressure, it is a colorless, highly volatile liquid with a characteristic mild aromatic odor. Isoprene is practically insoluble in water but readily miscible with common organic solvents including ethanol, ethyl ether, acetone, and benzene.
- Highly reactive
- Used as a chemical raw material in organic synthesis
- Rubber modifier
- Solvent for coatings and adhesives
Isoprene Description
NAME: Isoprene
Synonyms: 2-Methylbutadiene / Isopentadiene / 2-Methyl-1,3-butadiene
Molecular Formula: C5H8
Molecular Weight: 68.12 g/mol
CAS NO.: 78-79-5
Density: 0.68 g/cm3 (20℃)
Boiling point: 34 ºC
Melting point: -146 ºC
Flashing point: -48 ºC
Appearance: Colorless liquid with a mild aromatic odor
Solubility: Insoluble in water, soluble in ethanol, ether and other organic solvents.
Properties: Colorless, volatile, irritating oily liquid. Insoluble in water, soluble in benzene, easily soluble in ethanol, ether, and acetone. Forms explosive mixture with air.
Storage: Maintain storage in a cool and well-ventilated facility, ensuring that the ambient temperature remains below 29℃. It is essential to keep the material away from any sources of ignition and heat. The packaging must be sealed and kept free from air exposure. Additionally, it is crucial to store the material apart from oxidizing agents, acids, halogens, and similar substances to prevent any potential reactions. Large quantities should not be stored, and long-term storage is discouraged. Utilize explosion-proof lighting and adequate ventilation systems. Avoid using mechanical devices and tools that could generate sparks. Moreover, the storage area must be equipped with emergency leak response materials and appropriate containment solutions.
Safety Protection: High concentrations of vapor have an anesthetic effect and can damage internal organs if taken orally. The maximum allowable concentration in the air is 0.04 mg/L. The workplace should be well ventilated and operators should wear masks. Vapors and liquids can irritate the eyes, skin and respiratory system.
2-methyl-1,3-butadiene Technical
| Item | Index |
| Appearance | Colorless liquid with an aromatic odor |
| Purity | >99.0% |
| Vapor pressure | 53.2 kPa |
| Vapour density | 2.4 |
As a certified Isoprene factory, we adhere to strict quality protocols, with every batch undergoing rigorous testing to ensure consistent efficacy and safety.
Isopentadiene Applications
- Synthetic Polyisoprene Rubber (IR): Serves as the primary monomer for high-cis polyisoprene rubber, which offers properties closely mimicking natural rubber for heavy-duty tires and medical equipment.
- Butyl Rubber (IIR) Modification: Co-polymerized with isobutylene (typically 1-3% isoprene content) to introduce unsaturation sites, significantly enhancing the vulcanization capabilities of butyl rubber for inner tubes and airtight liners.
- Thermoplastic Elastomers (SIS): Used to synthesize Styrene-Isoprene-Styrene block copolymers, widely applied in hot-melt pressure-sensitive adhesives, tackifiers, and elastic films.
- Fine Chemical Intermediates: Functions as a precursor in the synthesis of pesticides, pharmaceuticals, terpene fragrances (such as linalool and geraniol), and specialty specialty coatings.
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