| Formula / Notation | C5H8 |
|---|---|
| CAS Number | 78-79-5 |
| Molecular Weight | 68.12 |
| Melting Point | -184 °F (NTP, 1992) |
| Boiling Point | 93 °F at 760 mmHg (NTP, 1992) |
| Density | 0.681 at 68 °F (USCG, 1999) - Less dense than water; will float |
| Solubility | less than 1 mg/mL at 70.7 °F (NTP, 1992) |
| Appearance | Isoprene, stabilized appears as a clear colorless liquid with a petroleum-like odor. Density 5.7 lb / gal. Flash point -65 °F. Boiling point 93 °F. May polymerize exothermically if heated or cont... |
| Also Known As | 2-methylbuta-1,3-diene; ISOPRENE; 78-79-5; 2-Methyl-1,3-butadiene; 2-Methylbuta-1,3-diene; Isopentadiene; 2-Methylbutadiene; 2-Methyldivinyl; 1,3-Butadiene, 2-methyl-; beta-Methylbivinyl |
| Category | Polymers & Plastics |
What is Natural rubber?
Isoprene can cause cancer according to The World Health Organization's International Agency for Research on Cancer (IARC).
Formula & Notation
IUPAC Name: 2-methylbuta-1,3-diene
Other Names / Synonyms: 2-methylbuta-1,3-diene; ISOPRENE; 78-79-5; 2-Methyl-1,3-butadiene; 2-Methylbuta-1,3-diene; Isopentadiene; 2-Methylbutadiene; 2-Methyldivinyl; 1,3-Butadiene, 2-methyl-; beta-Methylbivinyl
Properties & Characteristics
Physical Data
| Property | Value |
|---|---|
| Melting Point | -184 °F (NTP, 1992) |
| Boiling Point | 93 °F at 760 mmHg (NTP, 1992) |
| Density | 0.681 at 68 °F (USCG, 1999) - Less dense than water; will float |
| Molecular Weight | 68.12 |
| Solubility | less than 1 mg/mL at 70.7 °F (NTP, 1992) |
| Appearance | Isoprene, stabilized appears as a clear colorless liquid with a petroleum-like odor. Density 5.7 lb / gal. Flash point -65 °F. Boiling point 93 °F. May polymerize exothermically if heated or cont... |
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Isoprene can cause cancer according to The World Health Organization's International Agency for Research on Cancer (IARC).
Used in packaging, construction materials, automotive components, textiles, biomedical applications, and consumer products.
Generally low acute toxicity in solid form. Some can release hazardous fumes when heated or burned. Consult SDS before use.
The formula or notation for Natural rubber is: C5H8