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Key Documents

8.20846

Sigma-Aldrich

Naphthalene

for synthesis

Synonym(s):

Naphthalene

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About This Item

Empirical Formula (Hill Notation):
C10H8
CAS Number:
91-20-3
Molecular Weight:
128.17
MDL number:
MFCD00001742
UNSPSC Code:
12352005
EC Index Number:
202-049-5
NACRES:
NA.22

vapor pressure

0.072 hPa ( 20 °C)

Quality Level

200

assay

≥99.0% (GC)

form

solid

autoignition temp.

540 °C

potency

>2500 mg/kg LD50, skin (Rat)

expl. lim.

0.9-5.9 % (v/v)

bp

218 °C/1013 hPa

mp

79-82 °C

transition temp

flash point 79 °C

solubility

slightly soluble ≥0.038 g/L

density

1.085 g/cm3 at 20 °C

bulk density

550‑600 mg/m3

storage temp.

2-30°C

InChI

1S/C10H8/c1-2-6-10-8-4-3-7-9(10)5-1/h1-8H

InChI key

UFWIBTONFRDIAS-UHFFFAOYSA-N

Analysis Note

Assay (GC, area%): ≥ 99.0 % (a/a)
Melting range (lower value): ≥ 79 °C
Melting range (upper value): ≤ 82 °C
Identity (IR): passes test

signalword

Warning

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 2 - Flam. Sol. 2

Storage Class

4.1B - Flammable solid hazardous materials

wgk_germany

WGK 3

flash_point_f

173.3 °F - closed cup

flash_point_c

78.5 °C - closed cup

Certificates of Analysis (COA)

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