Decahydronaphthalene

Also known as: DECAHYDRONAPHTHALENE, DECAHYDRONAPHTHALENE MIXTURE OF CIS AN&, DECALIN, DECALIN SOLVENT, 97%, DECALIN(R), DECALINE, DEKALIN, Dekalina, EINECS 202-046-9, MFCD00004130, NAPHTHALANE, NAPHTHANE, Naphthan, bicyclo[4.4.0]decane, decahydro naphthalene, decahydronaphtalene, decalene, decalin, naphth(la)ne, perhydronaphthalene

Decahydronaphthalene (CAS 91-17-8) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C10H18 and a molecular weight of 138.25000 g/mol. Key properties include a melting point of -31 ºC, a boiling point of 187 ºC, a density of 0.896 g/mL at 25 °C(lit.) and a flash point of 57 °C. It is classified under GHS with signal word Danger and hazard statements H226 — Flammable liquid and vapour, H304 and H314 — Causes severe skin burns and eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 91-17-8
Jingsj CID: J-32881-2
Molecular Formula: C₁₀H₁₈
Molecular Weight: 138.25000 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	-31 ºC
Boiling Point	187 ºC
Density	0.896 g/mL at 25 °C(lit.)
Flash Point	57 °C
Exact Mass	138.14100
LogP	3.36680
Additional Property	4.76 (vs air)
Vapor Pressure	42 mm Hg ( 92 °C)
Refractive Index	n20/D 1.474(lit.)
Additional Property	6 mg/L at 20 ºC

GHS Safety & Compliance

Flammable / Corrosion / Acute Toxicity / Health Hazard / Environmental HazardSignal word: Danger

H226 — Flammable liquid and vapour
H304
H314 — Causes severe skin burns and eye damage
H331 — Toxic if inhaled
H411 — Toxic to aquatic life with long lasting effects

Customs & Trade Information

HS Code	29021990

Frequently Asked Questions

What is the CAS number of Decahydronaphthalene?

The CAS number of Decahydronaphthalene is 91-17-8.

What are the molecular formula and molecular weight of Decahydronaphthalene?

Decahydronaphthalene has molecular formula C10H18 and molecular weight 138.25000 g/mol.

Is Decahydronaphthalene hazardous?

Decahydronaphthalene has GHS signal word Danger and hazard statements H226 — Flammable liquid and vapour; H304; H314 — Causes severe skin burns and eye damage.

What are the upstream and downstream products of Decahydronaphthalene?

For Decahydronaphthalene, Upstream Products: Naphthalene, (1R,2R,6S,7S)-Tricyclo[5.2.1.02,6]decane, 2-Methoxynaphthalene; Downstream Products: N-(5,6,7,8-Tetrahydronaphthalen-2-yl)acetamide, Piperonyl alcohol, Perfluorodecalin.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "Decahydronaphthalene (CAS 91-17-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-32881-2 (accessed 2026-11-06).

Data for reference only; verify product details with suppliers before purchase.