Isobutyl nitrite
Also known as: 2-methylpropyl nitrite, Nitrous acid, 2-methylpropyl ester, Isobutylnitrite, isobutyl nitrite, EINECS 208-819-7, MFCD00002056
Isobutyl nitrite (CAS 542-56-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H9NO2 and a molecular weight of 103.120 g/mol. Key properties include a boiling point of 70.5±9.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of -21.1±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, H302 — Harmful if swallowed and H332 — Harmful if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 542-56-3
- Jingsj CID
- J-1108227-2
- Molecular Formula
- C4H9NO2
- Molecular Weight
- 103.120 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 70.5±9.0 °C at 760 mmHg |
|---|---|
| Density | 1.0±0.1 g/cm3 |
| Flash Point | -21.1±0.0 °C |
| Exact Mass | 103.063332 |
| PSA | 38.66000 |
| LogP | 1.92 |
| Vapor Pressure | 140.0±0.1 mmHg at 25°C |
| Refractive Index | 1.416 |
| Additional Property | <0.1 g/100 mL (19 ºC) |
GHS Safety & Compliance
- H225 — Highly flammable liquid and vapour
- H302 — Harmful if swallowed
- H332 — Harmful if inhaled
- H341 — Suspected of causing genetic defects
- H350 — May cause cancer
Customs & Trade Information
| HS Code | 2920909090 |
|---|---|
| Summary | 2920909090 esters of other inorganic acids of non-metals (excluding esters of hydrogen halides) and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Isobutyl nitrite?
The CAS number of Isobutyl nitrite is 542-56-3.
What are the molecular formula and molecular weight of Isobutyl nitrite?
Isobutyl nitrite has molecular formula C4H9NO2 and molecular weight 103.120 g/mol.
Is Isobutyl nitrite hazardous?
Isobutyl nitrite has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H302 — Harmful if swallowed; H332 — Harmful if inhaled.
What are the upstream and downstream products of Isobutyl nitrite?
For Isobutyl nitrite, Upstream Products: 2-Methyl-1-propanol, 1-Iodo-2-methylpropane, 1-Bromo-2-methylpropane; Downstream Products: 3-Bromo-4-fluorotoluene, 2-Methyl-1-propanol, 2-Methyl-1-nitropropane.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Isobutyl nitrite (CAS 542-56-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1108227-2 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.