How toxic is Naphthalene?

Its GHS hazard label carries the signal word Danger and the hazard pictograms Flammable, Irritant, Health hazard and Environmental.

What kind of molecule is Naphthalene?

Naphthalene has the formula C10H8 and a molecular weight of 128.17 g/mol. MoleculeFinder files it under aromatic hydrocarbons, in the everyday chemistry group.

What else is Naphthalene called?

Naphthalene is also called tar camphor, white tar, Mothballs and Camphor tar.

Naphthalene

C10H8128.17 g/mol Calculated

Also called Mothballs, tar camphor, white tar and Camphor tar.

Mothballs. It turns straight from solid to vapour without melting, which is why a mothball shrinks and vanishes.

Sources and notes

The introductionfrom sourceMoleculeFinder curated
Other namesfrom sourceWikidataIts English label and aliases on Wikidata.
Formula and weightcomputedPubChem
2D drawingcomputedPubChem structure, drawn by RDKit
3D modelfrom sourcePubChem 3D conformerLoaded after the page has painted, and on a phone only when you ask for it; the 2D drawing shows until it arrives.

Properties and sources

Calculated by PubChem

Molecular formula: C10H8
Molecular weight: 128.17 g/mol
XLogP3octanol/water, log units: 3.3
Polar surface areatopological: 0 Å²
H-bond donors: 0
H-bond acceptors: 0
Rotatable bonds: 0
Complexity: 80

Reported Hazard label (GHS), ECHA, EU CLP Regulation, Safe Work Australia via PubChem

Danger Flammable pictogram (GHS02), Irritant pictogram (GHS07), Health hazard pictogram (GHS08) and Environmental pictogram (GHS09); hazard statements H228, H302, H335, H351, H400, H410

Groups it belongs to

Category: Everyday chemistry
Family: Aromatic hydrocarbons
Chemical groups: Aromatics
Hazard classes: Flammable, Irritant, Health hazard, Environmental hazard, GHS Danger

SMILESC1=CC=C2C=CC=CC2=C1

PubChem CID 931 · Wikidata Q179724 · InChIKey UFWIBTONFRDIAS-UHFFFAOYSA-N · Data refreshed 2026-11-09

How MoleculeFinder sources and labels its data

Questions

What is Naphthalene?: Mothballs. It turns straight from solid to vapour without melting, which is why a mothball shrinks and vanishes.
How toxic is Naphthalene?: Its GHS hazard label carries the signal word Danger and the hazard pictograms Flammable, Irritant, Health hazard and Environmental. from source
What kind of molecule is Naphthalene?: Naphthalene has the formula C10H8 and a molecular weight of 128.17 g/mol. MoleculeFinder files it under aromatic hydrocarbons, in the everyday chemistry group. from sourcefrom sourcefrom sourcefrom source
What else is Naphthalene called?: Naphthalene is also called tar camphor, white tar, Mothballs and Camphor tar. from source

Sources and notes

Calculated valuescomputedPubChemComputed from the structure, so no laboratory conditions apply; complexity is PubChem's own structural score.
Hazard labelfrom sourceECHA, EU CLP Regulation, Safe Work Australia via PubChemThe label combines these classifications.
ECHAfrom sourceAttributionSource: European Chemicals Agency, echa.europa.eu.
Safe Work Australiafrom sourceAttributionSource: Safe Work Australia, Hazardous Chemical Information System, © Commonwealth of Australia, CC BY 4.0.
Data refreshedfrom sourceMoleculeFinder2026-11-09

Keep exploring

Also an aromatic hydrocarbonTolueneC7H8 Both carry an aromatic ring.IndoleC8H7N Both carry an aromatic ring.PhenolC6H6O

Sources and notes

The same kind of moleculefrom sourceMoleculeFinder curated groupsA structural neighbour in the same family or type group; the line names the group in its own words.
Similar in shapecomputedRDKit Morgan/TanimotoNeighbours by structural fingerprint; the sentence names the chemical groups the two share.
The drawingscomputedPubChem structures, drawn by RDKit