Merck
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8.22289

Sigma-Aldrich

1-Naphthol

for synthesis

Synonym(s):
1-Naphthol, 1-Hydroxynaphthalene
Empirical Formula (Hill Notation):
C10H8O
CAS Number:
Molecular Weight:
144.17
MDL number:
EC Index Number:
201-969-4

vapor pressure

1.3 hPa ( 94 °C)

Quality Level

assay

≥99% (GC)

form

solid

autoignition temp.

510 °C

potency

1870 mg/kg LD50, oral (Rat)
880 mg/kg LD50, skin (Rabbit)

technique(s)

UV/Vis spectroscopy: suitable

bp

288 °C/1013 hPa

mp

94-96 °C

transition temp

flash point 125 °C

solubility

0.1 g/L

density

1.28 g/cm3 at 20 °C

bulk density

450 kg/m3

storage temp.

2-30°C

InChI

1S/C10H8O/c11-10-7-3-5-8-4-1-2-6-9(8)10/h1-7,11H

InChI key

KJCVRFUGPWSIIH-UHFFFAOYSA-N

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Analysis Note

Assay (GC, area%): ≥ 99.0 % (a/a)
Melting range (lower value): ≥ 94 °C
Melting range (upper value): ≤ 96 °C
Identity (IR): passes test

Signal Word

Danger

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 3 - Eye Dam. 1 - Skin Irrit. 2 - Skin Sens. 1A - STOT SE 2 Oral - STOT SE 3

Target Organs

Kidney, Respiratory system

Storage Class Code

6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 1

Flash Point(F)

257.0 °F - closed cup

Flash Point(C)

125 °C - closed cup

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