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SHEET /m/limonene · PubChem CID 22311 · CAS 138-86-3 · REV 2026.07

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Limonene

from source

C10H16 · 136.23 g/mol

dipentene · Cajeputene · Cinene · Dipenten

What is Limonene?

The bright citrus scent locked in orange and lemon peel. Limonene (C10H16, 136 g/mol) is a terpene carried in everyday scent and aroma. Found in black pepper, fruit, and citrus. from source

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Fig. 1 · 2D structure RDKit

SMILESCC1=CCC(CC1)C(=C)C

Where you'll find it

Curated by MoleculeFinder from source

The dose makes the poison inferred

A reported rat oral LD50 for Limonene is 5,000 mg/kg, the dose lethal to half the animals tested. Scaled by body mass alone:

350.0 g
a median lethal dose scaled to 154 lb (350,000 mg)

“The dose makes the poison” is a cross-species estimate shown as neutral science, not a threshold anyone should act on. Real toxicity depends on the person, not body mass alone.

Toxicity & hazards

Toxicity · LD50

5,000 mg/kg · very low toxicity · LD50 rat oral from source

The dose lens above scales this to a body weight.

2 more reported values
  • 1,300 mg/kgLD50 · other · mouse
  • 5,000 mg/kgLD50 · dermal · rabbit
DangerFlammableIrritantHealth hazardEnvironmentalH226, H304, H315, H317, H319, H400, H410from source

Keep roaming

Where Limonene leads

Found infrom source
Relatedcomputed

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Sources & methodology

PubChem CID
22311
Wikidata
Q278809
Structure
PubChem → RDKit
LD50
PubChem
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MoleculeFinder fingerprint similarity
Everyday relationships
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