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Sigma-Aldrich

4-Amino-1-naphthalenesulfonic acid

97%

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Synonym(s):
1-Naphthylamine-4-sulfonic acid, Naphthionic acid
Linear Formula:
H2NC10H6SO3H
CAS Number:
Molecular Weight:
223.25
Beilstein:
1971299
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

Quality Level

Assay

97%

form

powder

mp

≥300 °C (lit.)

solubility

water: very slightly soluble(lit.)

SMILES string

Nc1ccc(c2ccccc12)S(O)(=O)=O

InChI

1S/C10H9NO3S/c11-9-5-6-10(15(12,13)14)8-4-2-1-3-7(8)9/h1-6H,11H2,(H,12,13,14)

InChI key

NRZRRZAVMCAKEP-UHFFFAOYSA-N

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This Item
3989698.41535218766
form

powder

form

powder

form

powder

form

solid

mp

≥300 °C (lit.)

mp

290 °C (dec.) (lit.)

mp

240-241 °C

mp

-

solubility

water: very slightly soluble(lit.)

solubility

-

solubility

-

solubility

water: soluble 6 g/L at 20 °C

General description

4-Amino-1-naphthalenesulfonic acid is a diazo compound. It is also known as Piria′s acid.

Application

4-Amino-1-naphthalenesulfonic acid has potent therapeutic applications. Its sodium salt has been used as non-toxic hemostatic.

Pictograms

Corrosion

Signal Word

Danger

Hazard Statements

Hazard Classifications

Skin Corr. 1B

Storage Class Code

8A - Combustible, corrosive hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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