1-Methyl-4-(methylsulfonyl)benzene

Also known as: Methyl p-tolyl sulfone, 4-(Methylsulfonyl)toluene, p-Tolyl methyl sulfone, 1-methyl-4-methylsulfonylbenzene, Methyl 4-methylphenyl sulfone, Methyl 4-tolyl sulfone, p-Methylsulfonyltoluene, 1-Methanesulfonyl-4-methylbenzene

1-Methyl-4-(methylsulfonyl)benzene (CAS 3185-99-7) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C8H10O2S and a molecular weight of 170.229 g/mol. Key properties include a melting point of 85-89 °C(lit.), a boiling point of 311.7±25.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 173.4±15.8 °C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H315 — Causes skin irritation and H318 — Causes serious eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 3185-99-7
Jingsj CID: J-19715-9
Molecular Formula: C₈H₁₀O₂S
Molecular Weight: 170.229 g/mol
Category: Solvents
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	85-89 °C(lit.)
Boiling Point	311.7±25.0 °C at 760 mmHg
Density	1.2±0.1 g/cm3
Flash Point	173.4±15.8 °C
Exact Mass	170.040146
PSA	42.52000
LogP	0.96
Vapor Pressure	0.0±0.6 mmHg at 25°C
Refractive Index	1.520

GHS Safety & Compliance

Corrosion / IrritantSignal word: Danger

H302 — Harmful if swallowed
H315 — Causes skin irritation
H318 — Causes serious eye damage
H335 — May cause respiratory irritation

Customs & Trade Information

HS Code	2904100000
Summary	2904100000 derivatives containing only sulpho groups, their salts and ethyl esters。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 1-Methyl-4-(methylsulfonyl)benzene?

The CAS number of 1-Methyl-4-(methylsulfonyl)benzene is 3185-99-7.

What are the molecular formula and molecular weight of 1-Methyl-4-(methylsulfonyl)benzene?

1-Methyl-4-(methylsulfonyl)benzene has molecular formula C8H10O2S and molecular weight 170.229 g/mol.

Is 1-Methyl-4-(methylsulfonyl)benzene hazardous?

1-Methyl-4-(methylsulfonyl)benzene has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H315 — Causes skin irritation; H318 — Causes serious eye damage.

What are the upstream and downstream products of 1-Methyl-4-(methylsulfonyl)benzene?

For 1-Methyl-4-(methylsulfonyl)benzene, Upstream Products: Methyl p-tolyl sulfide, Sodium p-toluenesulfinate, iodomethane; Downstream Products: 1-(Chloromethyl)-4-(methylsulfonyl)benzene, 4-Methylsulfonylbenzoic acid, 4-(Methylsulfonyl)benzylamine.

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. "1-Methyl-4-(methylsulfonyl)benzene (CAS 3185-99-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-19715-9 (accessed 2026-11-09).

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