Butyraldehyde
Also known as: Butanal, n-Butanal, Butyl aldehyde, Butyrylaldehyde, n-Butyraldehyde, 1-Butanal, Butan-1-al, Butyric aldehyde
Butyraldehyde (CAS 123-72-8) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C4H8O and a molecular weight of 72.106 g/mol. Key properties include a melting point of -96 °C, a boiling point of 77.6±3.0 °C at 760 mmHg, a density of 0.8±0.1 g/cm3 and a flash point of -11.1±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 123-72-8
- Jingsj CID
- J-44443-9
- Molecular Formula
- C4H8O
- Molecular Weight
- 72.106 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -96 °C |
|---|---|
| Boiling Point | 77.6±3.0 °C at 760 mmHg |
| Density | 0.8±0.1 g/cm3 |
| Flash Point | -11.1±0.0 °C |
| Exact Mass | 72.057518 |
| PSA | 17.07000 |
| LogP | 0.91 |
| Additional Property | 2.5 (vs air) |
| Vapor Pressure | 96.0±0.1 mmHg at 25°C |
| Refractive Index | 1.370 |
| Additional Property | 7.1 g/100 mL (25 ºC) |
GHS Safety & Compliance
- H225 — Highly flammable liquid and vapour
- H319 — Causes serious eye irritation
Customs & Trade Information
| HS Code | 2912190090 |
|---|---|
| Summary | 2912190090 acyclic aldehydes without other oxygen function。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Butyraldehyde?
The CAS number of Butyraldehyde is 123-72-8.
What are the molecular formula and molecular weight of Butyraldehyde?
Butyraldehyde has molecular formula C4H8O and molecular weight 72.106 g/mol.
Is Butyraldehyde hazardous?
Butyraldehyde has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H319 — Causes serious eye irritation.
What are the upstream and downstream products of Butyraldehyde?
For Butyraldehyde, Upstream Products: Butyronitrile, 1-Butanol, Butyric acid; Downstream Products: 4-Butylphenol, 5-decyne-4,7-diol, 1-Hexyn-3-ol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Butyraldehyde (CAS 123-72-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-44443-9 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.