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benzene

Also known as: (6)annulene, 1,3,5-Cyclohexatriene, Annulene, BENZOL, Benzeen, Benzen, Benzene, Benzene, OMniSolv(R), Benzene, PestiSolv(R), Benzene, SuperDry, J&KSealBenzene, 99%, SpcDry, Water≤50 ppM (by K.F.), SpcSeal, Benzene, for spectroscopy, Benzine, Benzol,HPLC Grade, Benzole, Benzolo, EINECS 200-753-7, Fenzen, MFCD00003009, PHENE, [6]Annulene

benzene (CAS 71-43-2) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C6H6 and a molecular weight of 78.112 g/mol. Key properties include a melting point of 5.5 °C(lit.), a boiling point of 80 ºC, a density of 0.9±0.1 g/cm3 and a flash point of -11 ºC. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, H304 and H315 — Causes skin irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
71-43-2
Jingsj CID
J-3007-0
Molecular Formula
C6H6
Molecular Weight
78.112 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Melting Point5.5 °C(lit.)
Boiling Point80 ºC
Density0.9±0.1 g/cm3
Flash Point-11 ºC
Exact Mass78.046951
LogP2.22
Additional Property2.77 (vs air)
Vapor Pressure100.9±0.1 mmHg at 25°C
Refractive Index1.5011
Additional Property0.18 g/100 mL

GHS Safety & Compliance

Flammable / Irritant / Health HazardSignal word: Danger
  • H225 — Highly flammable liquid and vapour
  • H304
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H340
  • H350 — May cause cancer
  • H372 — Causes damage to organs through prolonged exposure
  • H412 — Harmful to aquatic life with long lasting effects

Customs & Trade Information

HS Code2707100000

Frequently Asked Questions

What is the CAS number of benzene?

The CAS number of benzene is 71-43-2.

What are the molecular formula and molecular weight of benzene?

benzene has molecular formula C6H6 and molecular weight 78.112 g/mol.

Is benzene hazardous?

benzene has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H304; H315 — Causes skin irritation.

What are the upstream and downstream products of benzene?

For benzene, Downstream Products: 2-chlorophenylhydroxylamine, 2-Chloroaniline, sec-Butylbenzene.

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

Last updated:

How to cite: Jingsj. "benzene (CAS 71-43-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-3007-0 (accessed 2026-11-06).

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