C10H8
128.17 g/mol
Industrial ChemicalWarning
Naphthalene
CAS91-20-3EC202-049-5
Category
Industrial Chemical
Compound Class
Aromatic
Primary Use
production of phthalic anhydride
Naphthalene is a polycyclic aromatic hydrocarbon used primarily as a raw material in the production of phthalic anhydride, though o-xylene has increasingly replaced it for this purpose. It also serves as an insecticide and repellent, commonly found in mothballs and outdoor animal repellents.
production of phthalic anhydrideinsecticide and repellent (moth repellent, squirrel and bat repellent)
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
Restricted or banned substances
Substances on this list are banned or restricted under the named regulation. This page is a compliance reference — verify your obligations under applicable law.
CAS 91-20-3
Related Compounds
ReferenceSame Category
Quinoline
CAS91-22-5
Intermediate in manufacture of other products
ReferenceSame Category
2-nitroanisole
CAS91-23-6
dye intermediate and organic synthesis
ReferenceSame Category
2-methylnaphthalene
CAS91-57-6
dye and resin intermediate
ReferenceSame Category
2-chloronaphthalene
CAS91-58-7
chlorinated naphthalene industrial chemical
Referencestereoisomer of
Naphthalene-1,2,3,4,5,6,7,8-d8
CAS1146-65-2
research compound
Safety Reference
Warning
H302Harmful if swallowed
H351Suspected of causing cancer
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects
H228Flammable solid
H320Causes eye irritation
H411Toxic to aquatic life with long lasting effects
H317May cause an allergic skin reaction
H370Causes damage to organs
H372Causes damage to organs through prolonged or repeated exposure
H316Causes mild skin irritation
H371May cause damage to organs
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for Naphthalene (CAS 91-20-3) is 2707.40, 2902.90.
HS code (international, 6-digit)
2707.40, 2902.90
EU CN code (8-digit)
2707 40 00, 2902 90 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
naphthalene
InChIKey
UFWIBTONFRDIAS-UHFFFAOYSA-N
SMILES
C1=CC=C2C=CC=CC2=C1
Synonyms (48)
- Naphthalene, United States Pharmacopeia (USP)
- 1-Naphthalene
- 2-Naphthalene
- 2-naphthalen
- Albocarbon
- Camphor tar
- Dezodorator
- Melting point standard 79-81C
- Mighty 150
- Mighty RD1
- Moth balls
- Moth flakes
- NAPHTHALENE [MART.]
- NAPHTHALENE-1,4-D2
- Naftalen
- Naftalen [Polish]
- Naphtalinum
- Naphthalene - Melting point
- Naphthalene Standard
- Naphthalene, SAJ first grade
- Naphthalene, crude or refined
- Naphthalene, for synthesis
- Naphthalene, molten
- Naphthalene, pure
- Naphthalene-1,2,3,4-13C4
- Naphthalin
- Naphthaline
- Naphthalinum
- Naphthene
- Tar camphor
- White tar
- naftaleno
- naftalina
- naphtalene
- naphtaline
- naphthalen
- naphthalene
- napthalene