4-Sulfo-1,8-naphthalic anhydride potassium salt

4-磺酸-1,8-萘酐钾盐

Also known as: 1,3-Dioxo-1H,3H-naphtho[1,8-cd]pyran-6-sulfonic acid potassium salt, Potassium 1,3-dioxo-1H,3H-benzo[de]isochromene-6-sulfonate, 1H,3H-Naphtho[1,8-cd]pyran-6-sulfonic acid, 1,3-dioxo-, potassium salt (1:1), 4-Sulfo-1,8-naphthalenedicarboxylic anhydride potassium salt, 4-Sulpho-1,8-naphthalic anhydride potassium salt, 1,8-Naphthalenedicarboxylic anhydride-4-potassium sulfonate

4-Sulfo-1,8-naphthalic anhydride potassium salt (CAS 71501-16-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C12H5KO6S and a molecular weight of 316.328 g/mol. It is also known as 1,3-Dioxo-1H,3H-naphtho[1,8-cd]pyran-6-sulfonic acid potassium salt, Potassium 1,3-dioxo-1H,3H-benzo[de]isochromene-6-sulfonate and 1H,3H-Naphtho[1,8-cd]pyran-6-sulfonic acid, 1,3-dioxo-, potassium salt (1:1). Key property: a melting point of 207-210ºC. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

71501-16-1

Jingsj CID

J-42767-6

Molecular Formula

C₁₂H₅KO₆S

Chinese Name

4-磺酸-1,8-萘酐钾盐

Molecular Weight

316.328 g/mol

Category

Organic Acids

Last updated

8/21/2026