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Phthalamic acid

Also known as: 2-Carbamoylbenzoic acid, Benzoic acid, 2-(aminocarbonyl)-, o-Carbamoylbenzoic acid, Phthalamidic acid, Phthalic acid monoamide, 2-Carboxybenzamide, NSC 53442

Phthalamic acid (CAS 88-97-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H7NO3 and a molecular weight of 165.146 g/mol. Key properties include a melting point of 140-143 °C(lit.), a boiling point of 394.2±25.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 192.2±23.2 °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.
88-97-1
Jingsj CID
J-5588-9
Molecular Formula
C8H7NO3
Molecular Weight
165.146 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point140-143 °C(lit.)
Boiling Point394.2±25.0 °C at 760 mmHg
Density1.4±0.1 g/cm3
Flash Point192.2±23.2 °C
Exact Mass165.042587
PSA80.39000
LogP-0.13
Vapor Pressure0.0±1.0 mmHg at 25°C
Refractive Index1.615

GHS Safety & Compliance

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

Customs & Trade Information

HS Code2924299090
Summary2924299090. other cyclic amides (including cyclic carbamates) and their derivatives; salts thereof. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of Phthalamic acid?

The CAS number of Phthalamic acid is 88-97-1.

What are the molecular formula and molecular weight of Phthalamic acid?

Phthalamic acid has molecular formula C8H7NO3 and molecular weight 165.146 g/mol.

Is Phthalamic acid hazardous?

Phthalamic acid 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 Phthalamic acid?

For Phthalamic acid, Upstream Products: Phthalic anhydride, 2-Cyanobenzoic acid, 2-cyanobenzamide; Downstream Products: 2-Cyanobenzoic acid, Phthalonitrile, Phthalic anhydride.

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

Last updated:

How to cite: Jingsj. "Phthalamic acid (CAS 88-97-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-5588-9 (accessed 2026-11-09).

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