COA Center




a-Naphthol, 1-Hydroxynaphthalene


100 g (00100)

500 g (00500)

1GBA000180 1GBAB00040
Article No. 04756 Grade AR
Purity 99% CAS No. 90-15-3
Molecular Formula C10H8O Molecular Weight 144.17
H.S. Code 2907.1510 Shelf Life 36 Months

Physical Properties

Physical state at 20 °C Solid Colour Off white to brownish
Odour Slight phenolic odor Melting point/ Freezing point [°C] 94 - 96 °C
Flash point [°C] 125 °C Boiling point [°C] 278 - 280 °C
Initial boiling point [°C] 278°C Final boiling point [°C] 280 °C
Vapour pressure mm/Hg 1 mm Hg @ 940C Vapour density 4.5
Solubility in water [% weight] Practically insoluble in water Partition coefficient Log Pow octanol / water at 20°C 2.85
Explosion limits - upper [%] 5% Explosion limits -lower [%] 0.80%


Appearance Off-white to brownish flakes Purity (by GC) Min 99%
Melting point 95 - 97 deg C Insoluble matter in methanol Max 0.01%
Iron (Fe) Max 0.001% Chloride (Cl) Max 0.005%
Heavy metal (as Pb) Max 0.001% 2-Naphthol Max 0.2%
Naphthalene Max 0.2% Water (H2O) Max 0.2%
Sulphated ash Max 0.01%

Safety Information and Hazard Symbols

Corrosion Exclamation Mark
Symbol: GHS05, GHS07
Signal Word: Danger
UN No.: 2811
IMCO Class No.: 6.1
Packing Group: III
Hazardous Statement: H302-H312-H315-H318-H335
Precaution Statement: P261-P280-P302+P352-P304+P340-P305+P351+P338
Revision Date: 19-Jun-2024

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