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Benzaldehyde p-Toluenesulfonylhydrazone

Also known as: Benzaldehyde tosylhydrazone, Benzaldehyde p-toluenesulfonylhydrazone, Benzaldehyde [(4-methylphenyl)sulfonyl]hydrazone, 4-Methyl-N'-[(E)-phenylmethylene]benzenesulfonohydrazide, 4-methyl-N'-benzylidenebenzene-1-sulfonohydrazide, N'-benzylidene-4-methylbenzenesulfonohydrazide, N'-benzylidene-p-toluenesulfonic acid hydrazide, N-(benzylideneamino)-4-methylbenzenesulfonamide, N-benzylideneamino-p-toluenesulfonamide, p-Toluenesulfonic acid N'-benzylidene hydrazide, benzaldehyde toluene-p-sulphonylhydrazone, N2-Benzylidene-4-methylbenzenesulfonohydrazide, Benzenesulfonic acid, 4-methyl-, 2-(phenylmethylene)hydrazide

Benzaldehyde p-Toluenesulfonylhydrazone (CAS 1666-17-7) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C14H14N2O2S and a molecular weight of 274.338 g/mol. Key properties include a melting point of 130ºC, a boiling point of 431.8±38.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 214.9±26.8 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1666-17-7
Jingsj CID
J-24317-4
Molecular Formula
C14H14N2O2S
Molecular Weight
274.338 g/mol
Category
Solvents
Last updated
8/21/2026

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Physicochemical Properties

Melting Point130ºC
Boiling Point431.8±38.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point214.9±26.8 °C
Exact Mass274.077606
PSA66.91000
LogP3.35
Vapor Pressure0.0±1.0 mmHg at 25°C
Refractive Index1.591

GHS Safety & Compliance

IrritantSignal word: Warning
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Customs & Trade Information

HS Code2935009090
Summary2935009090 other sulphonamides VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:35.0%

Frequently Asked Questions

What is the CAS number of Benzaldehyde p-Toluenesulfonylhydrazone?

The CAS number of Benzaldehyde p-Toluenesulfonylhydrazone is 1666-17-7.

What are the molecular formula and molecular weight of Benzaldehyde p-Toluenesulfonylhydrazone?

Benzaldehyde p-Toluenesulfonylhydrazone has molecular formula C14H14N2O2S and molecular weight 274.338 g/mol.

Is Benzaldehyde p-Toluenesulfonylhydrazone hazardous?

Benzaldehyde p-Toluenesulfonylhydrazone has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

What are the upstream and downstream products of Benzaldehyde p-Toluenesulfonylhydrazone?

For Benzaldehyde p-Toluenesulfonylhydrazone, Upstream Products: Benzonitrile, 4-Methylbenzenesulfonhydrazide, Benzaldehyde; Downstream Products: 5-Methyl-3-phenyl-1H-pyrazole, 1-Phenyl-1-pentanol, n-Amylbenzene.

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

Last updated:

How to cite: Jingsj. "Benzaldehyde p-Toluenesulfonylhydrazone (CAS 1666-17-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-24317-4 (accessed 2026-11-09).

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