Naphthalene CAS 91-20-3

Naphthalene Basic information

description Chemical Properties Uses Health Hazard Toxicity

Product Name:

Naphthalene

CAS:

91-20-3

MF:

C10H8

MW:

128.17

EINECS:

202-049-5

Mol File:

91-20-3.mol

Naphthalene Chemical Properties

Melting point

80-82 °C (lit.)

Boiling point

218 °C (lit.)

bulk density

550-600mg/m3

density

0.99

vapor density

4.4 (vs air)

vapor pressure

0.03 mm Hg ( 25 °C)

refractive index

1.5821

Fp

174 °F

storage temp.

Store below +30°C.

solubility

methanol: soluble50mg/mL, clear, colorless

form

Faint beige to brown to salmon red powder

color

White to almost white

Specific Gravity

1.145

Odor

at 10.00 % in benzyl benzoate. pungent dry tarry

Odor Type

pungent

explosive limit

0.9-5.9%(V)

Water Solubility

30 mg/L (25 ºC)

Merck

146,370

BRN

1421310

Henry's Law Constant

5.64 at 25 °C (thermodynamic method-GC/UV spectrophotometry, Altschuh et al., 1999)

Exposure limits

TLV-TWA 10 ppm （～50 mg/m3) (ACGIH, MSHA, and OSHA); STEL 15 ppm (～75 mg/m3) (ACGIH); IDLH 500 ppm.

Dielectric constant

2.5（85℃）

InChI

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

InChIKey

UFWIBTONFRDIAS-UHFFFAOYSA-N

SMILES

c1ccc2ccccc2c1

LogP

3.7 at 25℃

CAS DataBase Reference

91-20-3(CAS DataBase Reference)

NIST Chemistry Reference

Naphthalene(91-20-3)

IARC

2B (Vol. 82) 2002

EPA Substance Registry System

Naphthalene (91-20-3)

Test items

Specifications

Results

Appearance

Conforms

Purity

>99.0%

99.13%

Crystallizing Point

79.7-79.8°C

79.7°C

Melting Point

79-83°C

80.2°C

Boiling Point

217-221°C

218°C

Flash Point

78-79°C

78.86°C

Conclusion

The product conforms to Enterprise
standard