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91-59-8

91-59-8 structural image
Product Name: 2-Naphthylamine
Formula: C10H9N
Synonyms: β-Naphthylamine;2-Aminonaphthalene
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CHEMICAL AND PHYSICAL PROPERTIES

Physical Description Beta-naphthylamine appears as a white to reddish colored solid in the form of flakes. Slightly soluble in hot water and denser than water. Toxic by ingestion, inhalation and skin absorption. Used to make dyes and agricultural chemicals.
Color/Form COLORLESS CRYSTALS WHICH DARKEN IN AIR TO A REDDISH-PURPLE COLOR
Odor Faint aromatic odor
Boiling Point 583 °F at 760 mmHg (NTP, 1992)
Melting Point 232 to 235 °F (NTP, 1992)
Flash Point 315 °F (NIOSH, 2023)
Solubility less than 1 mg/mL at 72 °F (NTP, 1992)
Density 1.061 at 208 °F (NTP, 1992) - Denser than water; will sink
Vapor Density 4.95 (NTP, 1992) - Heavier than air; will sink (Relative to Air)
Vapor Pressure 1 mmHg at 226.4 °F ; 5 mmHg at 286.9 °F (NTP, 1992)
LogP log Kow =2.28
Henry's Law Constant Henry's Law constant = 8.10X10-8 atm-cu m/mol @ 25 °C
Stability/Shelf Life Stable in cold in absence of air; oxidizes in presence of air; volatile in steam
Corrosivity NOT CORROSIVE
pH WEAK BASE
Ionization Potential 9.71 eV
Odor Threshold Odor Threshold Low: 1.4 [mmHg] Odor Threshold High: 1.9 [mmHg] Recognition odor threshold from HSDB
Refractive Index Index of refraction: 1.6493 @ 98 °C/D
Dissociation Constants pKa = 4.16
Kovats Retention Index 1484.8 1510.2 1535 1486
Other Experimental Properties Reduces warm ammoniacal silver nitrate
Chemical Classes Nitrogen Compounds -> Naphthylamines

SAFETY INFORMATION

Signal word Danger
Pictogram(s)

Exclamation Mark
Irritant
GHS07

Health Hazard
GHS08

Environment
GHS09
GHS Hazard Statements H302:Acute toxicity,oral
H350:Carcinogenicity
H411:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes P201:Obtain special instructions before use.
P273:Avoid release to the environment.
P308+P313:IF exposed or concerned: Get medical advice/attention.

COMPUTED DESCRIPTORS

Molecular Weight 143.18 g/mol
XLogP3 2.3
Hydrogen Bond Donor Count 1
Hydrogen Bond Acceptor Count 1
Rotatable Bond Count 0
Exact Mass 143.073499291 g/mol
Monoisotopic Mass 143.073499291 g/mol
Topological Polar Surface Area 26 Ų
Heavy Atom Count 11
Formal Charge 0
Complexity 133
Isotope Atom Count 0
Defined Atom Stereocenter Count 0
Undefined Atom Stereocenter Count 0
Defined Bond Stereocenter Count 0
Undefined Bond Stereocenter Count 0
Covalently-Bonded Unit Count 1
Compound Is Canonicalized Yes

PRODUCT INTRODUCTION

description

Beta-naphthylamine appears as a white to reddish colored solid in the form of flakes. Slightly soluble in hot water and denser than water. Toxic by ingestion, inhalation and skin absorption. Used to make dyes and agricultural chemicals.