isopentane
Also known as: 1,1-dimethylpropane, 2-METHYLBUTANE, 99+%, SPECTROPHOTOMETRIC GRADE, 2-METHYLBUTANE, 99.5+%, HPLC GRADE, 2-METHYLBUTANE, ANHYDROUS, 99+%, 2-METHYLBUTANE, REAGENTPLUS, >=99%, 2-Methylbutane, 2-methyl-butan, 2-methyl-butane, EINECS 201-142-8, ISOPROPENTANE, Isoamylhydride, Isopentan, JJDW, MFCD00009338, iso-C5H12, iso-Pentan, iso-pentane, methylbutane
isopentane (CAS 78-78-4) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C5H12 and a molecular weight of 72.14880 g/mol. Key properties include a melting point of -160 °C, a boiling point of 30 °C(lit.), a density of 0.62 g/mL at 25 °C(lit.) and a flash point of −51 °C. It is classified under GHS with signal word Danger and hazard statements H224, H304 and H336 — May cause drowsiness or dizziness. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 78-78-4
- Jingsj CID
- J-1328357-9
- Molecular Formula
- C5H12
- Molecular Weight
- 72.14880 g/mol
- Category
- Aliphatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -160 °C |
|---|---|
| Boiling Point | 30 °C(lit.) |
| Density | 0.62 g/mL at 25 °C(lit.) |
| Flash Point | −51 °C |
| Exact Mass | 72.09390 |
| LogP | 2.05240 |
| Additional Property | 2.6 (vs air) |
| Vapor Pressure | 11.17 psi ( 20 °C) |
| Refractive Index | n20/D 1.354(lit.) |
GHS Safety & Compliance
- H224
- H304
- H336 — May cause drowsiness or dizziness
- H411 — Toxic to aquatic life with long lasting effects
Customs & Trade Information
| HS Code | 2901100000 |
|---|---|
| Summary | 2901100000 saturated acyclic hydrocarbons。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:2.0%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of isopentane?
The CAS number of isopentane is 78-78-4.
What are the molecular formula and molecular weight of isopentane?
isopentane has molecular formula C5H12 and molecular weight 72.14880 g/mol.
Is isopentane hazardous?
isopentane has GHS signal word Danger and hazard statements H224; H304; H336 — May cause drowsiness or dizziness.
What are the upstream and downstream products of isopentane?
For isopentane, Upstream Products: isoprene, 2-Methylbut-2-ene, Dichloromethane; Downstream Products: 1-Butene, 3,3-Dimethylpentane, 2,4-dimethylpentane.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "isopentane (CAS 78-78-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1328357-9 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.