1-Naphthol GR for analysis


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Synonyms 1-Hydroxynaphthalene
Description 1-Naphthol


Product Information
CAS number 90-15-3
EC index number 604-029-00-5
EC number 201-969-4
Hill Formula C₁₀H₈O
Chemical formula C₁₀H₇OH
Molar Mass 144.17 g/mol
HS Code 2907 15 10
Structure formula Image Structure formula Image
Quality Level MQ100


Physicochemical Information
Boiling point 288 °C (1013 hPa)
Density 1.28 g/cm3 (20 °C)
Flash point 125 °C
Ignition temperature 510 °C
Melting Point 94 – 96 °C
Vapor pressure 1.3 hPa (94 °C)
Bulk density 450 kg/m3
Solubility 0.1 g/l


Toxicological Information
LD 50 oral LD50 Rat 1870 mg/kg
LD 50 dermal LD50 Rabbit 880 mg/kg


Safety Information according to GHS
Hazard Pictogram(s) Hazard Pictogram(s)
Hazard Pictogram(s)
Hazard Statement(s) H302: Harmful if swallowed.
H311: Toxic in contact with skin.
H315: Causes skin irritation.
H318: Causes serious eye damage.
H335: May cause respiratory irritation.
Precautionary Statement(s) P280: Wear protective gloves/ protective clothing/ eye protection/ face protection.
P302 + P352: IF ON SKIN: Wash with plenty of soap and water.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P308 + P310: IF exposed or concerned: immediately call a POISON CENTER or doctor/ physician.
Signal Word Danger
RTECS QL2800000
Storage class 6.1C Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
WGK WGK 1 slightly hazardous to water
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.


Safety Information
Hazard Symbols Hazard SymbolsHarmful
Categories of danger harmful, irritant
R Phrase R 21/22-37/38-41
Harmful in contact with skin and if swallowed.Irritating to respiratory system and skin.Risk of serious damage to eyes.
S Phrase S 22-26-37/39
Do not breathe dust.In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Wear suitable gloves and eye/face protection.


Storage Store below +30°C.


Transport Information
Declaration (railroad and road) ADR, RID UN 2811 , 6.1, III
Declaration (transport by air) IATA-DGR UN 2811 , 6.1, III
Declaration (transport by sea) IMDG-Code UN 2811 , 6.1, III


Assay (GC, area%) ≥ 99.0 % (a/a)
2-Naphthol (GC, area%) ≤ 0.20 % (a/a)
Naphthalene (GC, area%) ≤ 0.20 % (a/a)
Melting range (lower value) ≥ 95 °C
Melting range (upper value) ≤ 97 °C
Water (K. F.) ≤ 0.20 %
Identity (IR) passes test
Chloride (Cl) ≤ 0.005 %
Heavy metals (as Pb) ≤ 0.001 %
Iron (Fe) ≤ 0.001 %
Sulfated ash ≤ 0.05 %


Additional information


50g, 250g


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