1,4-diphenylpyrazolidine-3,5-dione

Also known as: Phenopyrazone, 1,4-Diphenyl-3,5-pyrazolidinedione, 1,4-Diphenyl-3,5-diketopyrazolidin, 1,4-Diphenyl-3,5-diketopyrazolidon, 1,4-Diphenyl-pyrazolidin-3,5-dion, 1,4-di(phenyl)pyrazolidine-3,5-quinone, 1,4-diphenyl-pyrazolidine-3,5-dione, 3,5-Pyrazolidinedione, 1,4-diphenyl-, DPHP, Diphenox, Kr 132, Phenopyrazon

1,4-diphenylpyrazolidine-3,5-dione (CAS 3426-01-5) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C15H12N2O2 and a molecular weight of 252.26800 g/mol. Key property: a density of 1.279g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 3426-01-5
Jingsj CID: J-1397973-9
Molecular Formula: C₁₅H₁₂N₂O₂
Molecular Weight: 252.26800 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Density	1.279g/cm3
Exact Mass	252.09000
PSA	52.90000
LogP	2.18910
Refractive Index	1.627

Customs & Trade Information

HS Code	2933990090
Summary	2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 1,4-diphenylpyrazolidine-3,5-dione?

The CAS number of 1,4-diphenylpyrazolidine-3,5-dione is 3426-01-5.

What are the molecular formula and molecular weight of 1,4-diphenylpyrazolidine-3,5-dione?

1,4-diphenylpyrazolidine-3,5-dione has molecular formula C15H12N2O2 and molecular weight 252.26800 g/mol.

What are the upstream and downstream products of 1,4-diphenylpyrazolidine-3,5-dione?

For 1,4-diphenylpyrazolidine-3,5-dione, Upstream Products: Phenylhydrazine, Diethyl phenylmalonate, Phenylmalonic acid.

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

Last updated: 8/21/2026

How to cite: Jingsj. "1,4-diphenylpyrazolidine-3,5-dione (CAS 3426-01-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1397973-9 (accessed 2026-11-06).

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