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4-Methylphenylhydrazine hydrochloride

Also known as: p-Tolylhydrazine hydrochloride, 4-Tolylhydrazine monohydrochloride, Hydrazine, (4-methylphenyl)-, hydrochloride (1:1), p-Methylphenylhydrazine hydrochloride, P-Tolylhydrozine hydrochloride

4-Methylphenylhydrazine hydrochloride (CAS 637-60-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H11ClN2 and a molecular weight of 158.629 g/mol. Key properties include a melting point of 241 ºC, a boiling point of 242.8ºC at 760 mmHg, a density of 1.18 and a flash point of 115.3ºC. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
637-60-5
Jingsj CID
J-1117424-6
Molecular Formula
C7H11ClN2
Molecular Weight
158.629 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point241 ºC
Boiling Point242.8ºC at 760 mmHg
Density1.18
Flash Point115.3ºC
Exact Mass158.061081
PSA38.05000
LogP2.85590
Additional Propertysoluble

GHS Safety & Compliance

Acute ToxicitySignal word: Danger
  • H301 — Toxic if swallowed
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Customs & Trade Information

HS Code2928000090
Summary2928000090 other organic derivatives of hydrazine or of hydroxylamine VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 4-Methylphenylhydrazine hydrochloride?

The CAS number of 4-Methylphenylhydrazine hydrochloride is 637-60-5.

What are the molecular formula and molecular weight of 4-Methylphenylhydrazine hydrochloride?

4-Methylphenylhydrazine hydrochloride has molecular formula C7H11ClN2 and molecular weight 158.629 g/mol.

Is 4-Methylphenylhydrazine hydrochloride hazardous?

4-Methylphenylhydrazine hydrochloride has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H315 — Causes skin irritation; H319 — Causes serious eye irritation.

What are the upstream and downstream products of 4-Methylphenylhydrazine hydrochloride?

For 4-Methylphenylhydrazine hydrochloride, Upstream Products: p-Toluidine, 4-Bromotoluene, 4-Chlorotoluene; Downstream Products: Latrepirdine, 4-Chloro-1-(p-tolyl)-1H-pyrazolo[3,4-d]pyrimidine, 5-Methyl-N,N-dimethyltryptamine.

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

Last updated:

How to cite: Jingsj. "4-Methylphenylhydrazine hydrochloride (CAS 637-60-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1117424-6 (accessed 2026-11-09).

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