Skip to main content
Jingsj
.mol.sdf

p-Diazobenzenesulfonic acid

Also known as: 4-diazobenzenesulfonic acid, 4-sulfobenzenediazonium hydroxide inner salt, p-sulfobenzenediazonium hydroxide inner salt, diazotized sulfanilic acid, Pauly's reagent, 4-sulfonatobenzenediazonium, 4-diazophenylsulfonic acid, benzenediazonium, 4-sulfo-, inner salt

p-Diazobenzenesulfonic acid (CAS 305-80-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H4N2O3S and a molecular weight of 184.17300 g/mol. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
305-80-6
Jingsj CID
J-1505256-9
Molecular Formula
C6H4N2O3S
Molecular Weight
184.17300 g/mol
Category
Organic Acids
Last updated
8/21/2026
Request MSDS / TDS

No offers for this compound yet.

Request a quote

Physicochemical Properties

Exact Mass183.99400
PSA93.73000
LogP2.15608

Frequently Asked Questions

What is the CAS number of p-Diazobenzenesulfonic acid?

The CAS number of p-Diazobenzenesulfonic acid is 305-80-6.

What are the molecular formula and molecular weight of p-Diazobenzenesulfonic acid?

p-Diazobenzenesulfonic acid has molecular formula C6H4N2O3S and molecular weight 184.17300 g/mol.

What are the upstream and downstream products of p-Diazobenzenesulfonic acid?

For p-Diazobenzenesulfonic acid, Upstream Products: Sodium 4-aminobenzenesulfonate, Sulfanilic acid, Acid Orange 7; Downstream Products: Potassium thiocyanate, Orange IV, 4-Fluorobenzenesulfonic acid.

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

Last updated:

How to cite: Jingsj. "p-Diazobenzenesulfonic acid (CAS 305-80-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1505256-9 (accessed 2026-11-09).

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