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LC440 4-Aminonaphthalene-1-sulfonic acid
for synthesis


Order number Packaging Quantity Price €
AC27440 Plastic bottle  50 g 54
AC27440 Plastic bottle  100 g Inquire


Product information
Synonyms 1-Naphthylamine-4-sulfonic acid, Naphthionic acid
Hill Formula C10H9NO3S
HS Code 2921 45 00
EC number 201-567-9
Molar mass 223.24 g/mol
CAS number 84-86-6


Chemical and physical data
Solubility 0.31 g/l (20 °C)
Melting point >300 °C
Molar mass 223.24 g/mol
Density 1.67 g/cm3 (20 °C)


Safety information
R Phrase

R 36/37/38
Irritating to eyes, respiratory system and skin.

S Phrase

S 26
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.

Categories of danger


Hazard Symbol


Storage class

8 A Combustible substances, corrosive


WGK 1 slightly water endangering

Disposal 3
Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.


Transport information
Declaration (transport by sea) IMDG-Code UN 2585 ARYLSULPHONIC ACIDS, SOLID, 8, III, Segregation Group: 1 (Acids)
Declaration (transport by air) IATA-DGR UN 2585 ARYLSULPHONIC ACIDS, SOLID, 8, III


Assay (acidimetric) ≥ 97 %
Identity (IR) passes test




139.15 g/mol