Naphthalene
Also known as: 'LGC' (2402), 'LGC' (2603), 0PHTHALENE CRUDE, 1-NAPHTHALENE, Albocarbon, Camphor tar, EINECS 202-049-5, MFCD00001742, MIXED DIMETHYLNAPHTHALENE DISTILLATE, Melting point standard 79-81C, Moth balls, Moth flakes, NAPHTALENE, NAPHTHALENE, NAPHTHALENE BALLS 3/4 INCH DIAMETER, NAPHTHALENE FOR SYNTHESIS, NAPHTHALENE, MOLTEN, NAPHTHALENE, REFINED, NAPHTHALENE, SCINTILLATION GRADE, NAPHTHENE
Naphthalene (CAS 91-20-3) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C10H8 and a molecular weight of 128.171 g/mol. Key properties include a melting point of 80-82 °C(lit.), a boiling point of 221.5±7.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 78.9±0.0 °C. It is classified under GHS with signal word Warning and hazard statements H228, H302 — Harmful if swallowed and H351 — Suspected of causing cancer. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 91-20-3
- Jingsj CID
- J-1325982-0
- Molecular Formula
- C10H8
- Molecular Weight
- 128.171 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 80-82 °C(lit.) |
|---|---|
| Boiling Point | 221.5±7.0 °C at 760 mmHg |
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 78.9±0.0 °C |
| Exact Mass | 128.062607 |
| LogP | 3.45 |
| Additional Property | 4.4 (vs air) |
| Vapor Pressure | 0.2±0.2 mmHg at 25°C |
| Refractive Index | 1.632 |
| Additional Property | 30 mg/L (25 ºC) |
GHS Safety & Compliance
- H228
- H302 — Harmful if swallowed
- H351 — Suspected of causing cancer
- H410 — Very toxic to aquatic life with long lasting effects
Customs & Trade Information
| HS Code | 2902902000 |
|---|---|
| Summary | 2902902000 naphthalene。supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward)。VAT:17.0%。tax rebate rate:9.0%。MFN tarrif:2.0%。general tariff:35.0% |
Frequently Asked Questions
What is the CAS number of Naphthalene?
The CAS number of Naphthalene is 91-20-3.
What are the molecular formula and molecular weight of Naphthalene?
Naphthalene has molecular formula C10H8 and molecular weight 128.171 g/mol.
Is Naphthalene hazardous?
Naphthalene has GHS signal word Warning and hazard statements H228; H302 — Harmful if swallowed; H351 — Suspected of causing cancer.
What are the upstream and downstream products of Naphthalene?
For Naphthalene, Downstream Products: 1,4-Naphthalenedicarboxylic 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. "Naphthalene (CAS 91-20-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1325982-0 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.