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2-(4-nitrophenyl)propionic acid

Also known as: 2-(4-Nitrophenyl)propanoic acid, α-Methyl-4-nitrophenylacetic acid, Benzeneacetic acid, α-methyl-4-nitro-, 2-(p-Nitrophenyl)propionic acid, Hydratropic acid, p-nitro-, a-Methyl-4-nitrobenzeneacetic acid, EINECS 243-423-8, MFCD00012106, RARECHEM AL BO 1487

2-(4-nitrophenyl)propionic acid (CAS 19910-33-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H9NO4 and a molecular weight of 195.17200 g/mol. Key properties include a melting point of 88-89 °C(lit.), a boiling point of 361.9ºC at 760mmHg, a density of 1.337g/cm3 and a flash point of 160.5ºC. 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.
19910-33-9
Jingsj CID
J-14030-7
Molecular Formula
C9H9NO4
Molecular Weight
195.17200 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point88-89 °C(lit.)
Boiling Point361.9ºC at 760mmHg
Density1.337g/cm3
Flash Point160.5ºC
Exact Mass195.05300
PSA83.12000
LogP2.30610
Vapor Pressure7.16E-06mmHg at 25°C
Refractive Index1.579

GHS Safety & Compliance

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

Customs & Trade Information

HS Code2916399090
Summary2916399090 other aromatic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives 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 2-(4-nitrophenyl)propionic acid?

The CAS number of 2-(4-nitrophenyl)propionic acid is 19910-33-9.

What are the molecular formula and molecular weight of 2-(4-nitrophenyl)propionic acid?

2-(4-nitrophenyl)propionic acid has molecular formula C9H9NO4 and molecular weight 195.17200 g/mol.

Is 2-(4-nitrophenyl)propionic acid hazardous?

2-(4-nitrophenyl)propionic acid has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

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

Last updated:

How to cite: Jingsj. "2-(4-nitrophenyl)propionic acid (CAS 19910-33-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-14030-7 (accessed 2026-11-09).

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