COA Center




Reagent for gold
a-Naphthylamine, 1-Aminonaphthalene


100 g (00100)

500 g (00500)

1GBA000180 1GBAB00091
Article No. 04796 Grade AR
Purity 99% CAS No. 134-32-7
Molecular Formula C10H9N Molecular Weight 143.19
H.S. Code 2921.4511 Shelf Life 60 Months

Physical Properties

Physical state at 20 °C Solid Colour Reddish Crystalline
Odour Ammonia odor pH value 7.1 at 1 g/l at 20 °C
Melting point/ Freezing point [°C] 47 - 50 °C Flash point [°C] 157 °C
Boiling point [°C] 301 °C Vapour pressure [20°C] 0.004 hPa at 20 °C
Density [g/cm3] 1.114 Solubility in water [% weight] Very slightly soluble in cold water
Partition coefficient Log Pow octanol / water at 20°C 2.1


Appearance Tan to purple coloured crystalline powder Purity (by GC) Min. 99.0%
Substance insoluble in acetic acid Max 0.02% Melting point 48 - 50°C
Heavy metal (as Pb) Max. 0.001% 2-Naphthylamine Max. 0.1%
Water (H2O) Max. 0.2%

Safety Information and Hazard Symbols

Exclamation Mark Environment Health Hazard
Symbol: GHS07, GHS08, GHS09
Signal Word: Danger
UN No.: 2077
IMCO Class No.: 6.1
Packing Group: III
Hazardous Statement: H302-H350-H411
Precaution Statement: P201-P273-P308 + P313
Revision Date: 30-Dec-2021

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