1-Naphthaldehyde
Also known as: 1-Naphthaldehyde, 1-Naphthalenecarboxaldehyde, alpha-Naphthaldehyde, 1-Formylnaphthalene, Naphthalene-1-carbaldehyde, Naphthalene-1-carboxaldehyde, alpha-Naphthylaldehyde, alpha-Naphthylcarboxaldehyde
1-Naphthaldehyde (CAS 66-77-3) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C11H8O and a molecular weight of 156.181 g/mol. Key properties include a melting point of 1-2 °C(lit.), a boiling point of 292.0±0.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 179.5±5.0 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 66-77-3
- Jingsj CID
- J-42943-2
- Molecular Formula
- C11H8O
- Molecular Weight
- 156.181 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 1-2 °C(lit.) |
|---|---|
| Boiling Point | 292.0±0.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 179.5±5.0 °C |
| Exact Mass | 156.057510 |
| PSA | 17.07000 |
| LogP | 2.87 |
| Additional Property | >1 (vs air) |
| Vapor Pressure | 0.0±0.6 mmHg at 25°C |
| Refractive Index | 1.676 |
GHS Safety & Compliance
- H302 — Harmful if swallowed
Customs & Trade Information
| HS Code | 2912299000 |
|---|---|
| Summary | 2912299000. other cyclic aldehydes without other oxygen function. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:5.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of 1-Naphthaldehyde?
The CAS number of 1-Naphthaldehyde is 66-77-3.
What are the molecular formula and molecular weight of 1-Naphthaldehyde?
1-Naphthaldehyde has molecular formula C11H8O and molecular weight 156.181 g/mol.
Is 1-Naphthaldehyde hazardous?
1-Naphthaldehyde has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.
What are the upstream and downstream products of 1-Naphthaldehyde?
For 1-Naphthaldehyde, Upstream Products: 1-Iodonaphthalene, 1-Naphthoyl chloride, 1-Naphthonitrile; Downstream Products: 2-Methyl-1-naphthaldehyde, 3-(1-Naphthyl)propionic acid, Phthalide-3-acetic acid.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1-Naphthaldehyde (CAS 66-77-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-42943-2 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.