1-Naphthylamine-4,6,8-trisulfonic acid

1-Naphthylamine-4,6,8-trisulfonic acid (also known as 1-NAPTS) is an important industrial chemical used in a variety of applications. It has the chemical formula C10H9NO9S3 and a molecular weight of 383.37. 1-NAPTS is available in a variety of forms, including as a salt form, as a free acid, or as a derivatized acid. It is also available in a variety of sizes and purity levels.


Chemical Name:

1-Naphthylamine-4,6,8-trisulfonic acid



Molecular Fomula:


Formula Weight:


Chemical Uses


1-Naphthylamine-4,6,8-trisulfonic acid has a unique structure, consisting of a benzene ring with three sulfur atoms attached to it. The sulfur atoms are connected to three oxygen atoms, making the compound very stable and allowing it to dissolve in water. Additionally, the compound has an extremely high melting point, making it a useful material in many industrial applications.


1-NAPTS is used extensively in the pharmaceutical industry. It is used as an anti-microbial agent, pH regulator, and in the manufacture of drugs and excipients. 1-NAPTS has also been used in the development of novel techniques for the production of active pharmaceutical ingredients (APIs).

1-NAPTS is also used as an additive in the cosmetic industry, as a preservative and to increase the viscosity of cosmetics. It is also used in the food and beverage industry, as a preservative.

Chemical Properties

Chemical name:

1-Naphthylamine-4,6,8-trisulfonic acid

Cas No:


Molecular Formula:


Formula Weight:




Storage conditions:

Store at 2-8°C.

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