1,8-Naphthalimide
Also known as: Naphthalimide, 1H-Benzo[de]isoquinoline-1,3(2H)-dione, Naphthalene-1,8-dicarboximide, 1,8-Naphthalenedicarboximide, Naphthalic acid imide, 1H-Benz[de]isoquinoline-1,3(2H)-dione, benzo[de]isoquinoline-1,3-dione
1,8-Naphthalimide (CAS 81-83-4) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C12H7NO2 and a molecular weight of 197.189 g/mol. Key properties include a melting point of 299-300 °C(lit.), a boiling point of 449.1±18.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 208.9±21.4 °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.
- 81-83-4
- Jingsj CID
- J-14811-8
- Molecular Formula
- C12H7NO2
- Molecular Weight
- 197.189 g/mol
- Category
- Organic Bases
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 299-300 °C(lit.) |
|---|---|
| Boiling Point | 449.1±18.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 208.9±21.4 °C |
| Exact Mass | 197.047684 |
| PSA | 49.93000 |
| LogP | 0.18 |
| Vapor Pressure | 0.0±1.1 mmHg at 25°C |
| Refractive Index | 1.708 |
GHS Safety & Compliance
- H302 — Harmful if swallowed
Customs & Trade Information
| HS Code | 2933990090 |
|---|---|
| Summary | 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 1,8-Naphthalimide?
The CAS number of 1,8-Naphthalimide is 81-83-4.
What are the molecular formula and molecular weight of 1,8-Naphthalimide?
1,8-Naphthalimide has molecular formula C12H7NO2 and molecular weight 197.189 g/mol.
Is 1,8-Naphthalimide hazardous?
1,8-Naphthalimide has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.
What are the upstream and downstream products of 1,8-Naphthalimide?
For 1,8-Naphthalimide, Upstream Products: 1,8-Naphthalic anhydride, Trimethylsilyl isocyanate, 1-Naphthoyl chloride; Downstream Products: 2-(2-hydroxyethyl)-1H-benzo[de]isoquinoline-1,3(2H)-dione, Alrestatin, N-aminophthalimide.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1,8-Naphthalimide (CAS 81-83-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-14811-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.