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p-Toluenesulfonyl azide

Also known as: Tosyl azide, 4-Methylbenzenesulfonyl azide, 4-methylbenzenesulfonylazid, p-Methylbenzenesulfonyl azide, p-Toluenesulfonic acid azide

p-Toluenesulfonyl azide (CAS 941-55-9) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C7H7N3O2S and a molecular weight of 197.214 g/mol. Key properties include a density of ~0.90 g/mL at 20 °C and a flash point of 4℃. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, H300 and H304. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
941-55-9
Jingsj CID
J-46638-6
Molecular Formula
C7H7N3O2S
Molecular Weight
197.214 g/mol
Category
Solvents
Last updated
8/21/2026
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Physicochemical Properties

Density~0.90 g/mL at 20 °C
Flash Point4℃
Exact Mass197.025894
PSA92.27000
LogP2.52756
Refractive Indexn20/D 1.548
Storage Conditions2-8°C

GHS Safety & Compliance

Flammable / Acute Toxicity / Health HazardSignal word: Danger
  • H225 — Highly flammable liquid and vapour
  • H300
  • H304
  • H315 — Causes skin irritation
  • H336 — May cause drowsiness or dizziness
  • H373 — May cause damage to organs through prolonged exposure

Customs & Trade Information

HS Code2929909090
Summary2929909090 other compounds with other nitrogen function VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0%

Frequently Asked Questions

What is the CAS number of p-Toluenesulfonyl azide?

The CAS number of p-Toluenesulfonyl azide is 941-55-9.

What are the molecular formula and molecular weight of p-Toluenesulfonyl azide?

p-Toluenesulfonyl azide has molecular formula C7H7N3O2S and molecular weight 197.214 g/mol.

Is p-Toluenesulfonyl azide hazardous?

p-Toluenesulfonyl azide has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H300; H304.

What are the upstream and downstream products of p-Toluenesulfonyl azide?

For p-Toluenesulfonyl azide, Upstream Products: p-Toluenesulfonyl chloride, p-Toluenesulfonic acid, 4-Methylbenzenesulfonhydrazide; Downstream Products: 2-Amino-4'-methylbenzophenone, 2-amino-4-methylbenzophenone, 1-[(4-Methylphenyl)sulfonyl]-1H-indole.

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

Last updated:

How to cite: Jingsj. "p-Toluenesulfonyl azide (CAS 941-55-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-46638-6 (accessed 2026-11-09).

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