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4-Methoxyphenylhydrazine hydrochloride

Also known as: (4-Methoxyphenyl)hydrazine hydrochloride, 1-(4-Methoxyphenyl)hydrazine hydrochloride, 4-Hydrazinoanisole Hydrochloride, p-Methoxyphenylhydrazine hydrochloride, p-Anisylhydrazine hydrochloride, 4-Anisylhydrazine hydrochloride

4-Methoxyphenylhydrazine hydrochloride (CAS 19501-58-7) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H11ClN2O and a molecular weight of 174.628 g/mol. Key properties include a melting point of 160-162 °C (dec.)(lit.), a boiling point of 263.5ºC at 760 mmHg, a density of 1.15g/cm3 and a flash point of 113.2ºC. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H312 — Harmful in contact with skin and H332 — Harmful if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
19501-58-7
Jingsj CID
J-18626-5
Molecular Formula
C7H11ClN2O
Molecular Weight
174.628 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point160-162 °C (dec.)(lit.)
Boiling Point263.5ºC at 760 mmHg
Density1.15g/cm3
Flash Point113.2ºC
Exact Mass174.055984
PSA47.28000
LogP2.55610
Vapor Pressure0.0103mmHg at 25°C
Additional Propertysoluble

GHS Safety & Compliance

IrritantSignal word: Warning
  • H302 — Harmful if swallowed
  • H312 — Harmful in contact with skin
  • H332 — Harmful if inhaled
  • H317 — May cause an allergic skin reaction

Customs & Trade Information

HS Code29280090

Frequently Asked Questions

What is the CAS number of 4-Methoxyphenylhydrazine hydrochloride?

The CAS number of 4-Methoxyphenylhydrazine hydrochloride is 19501-58-7.

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

4-Methoxyphenylhydrazine hydrochloride has molecular formula C7H11ClN2O and molecular weight 174.628 g/mol.

Is 4-Methoxyphenylhydrazine hydrochloride hazardous?

4-Methoxyphenylhydrazine hydrochloride has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H312 — Harmful in contact with skin; H332 — Harmful if inhaled.

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

For 4-Methoxyphenylhydrazine hydrochloride, Upstream Products: p-Anisidine, 4-Methoxybenzenediazonium tetrafluoroborate; Downstream Products: Indometacin, 1-(4-Methoxyphenyl)-1H-pyrazole, 1-(4-Methoxyphenyl)-3-methyl-1H-pyrazol-5-amine.

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-Methoxyphenylhydrazine hydrochloride (CAS 19501-58-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-18626-5 (accessed 2026-11-09).

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