SPECTRUM

Chemical Fact Sheet

Chemical Abstract Number (CAS #) 91598
CASRN 91-59-8
Synonymsbeta-Naphthylamine
2-Naphthylamine
Analytical Method EPA Method 8270
Molecular FormulaC10H9N

Link to the National Library of Medicine's Hazardous Substances
Database for more details on this compound.

Use FORMERLY USED IN THE MANUFACTURE OF RUBBER CHEM INT FOR DYES (FORMER USE) CHEM INT FOR RUBBER ANTIOXIDANTS (FORMER USE) Used to produce 2-chloronaphthylamine
Apparent Color COLORLESS CRYSTALS WHICH DARKEN IN AIR TO A REDDISH-PURPLE COLOR
Odor Faint aromatic odor
Boiling Point 306 DEG C, ALSO STATED AS 294 DEG C
Melting Point 111-113 DEG C
Molecular Weight 143.18
Density 1.061 AT 98 DEG C/4 DEG C
Odor Threshold Concentration Recognition: 1.4-1.9 mg/cu m
Sensitivity Data B-Naphthylamine is mildly irritating to the skin and has produced contact dermatitis.
Environmental Impact 2-Naphthylamine was released into wastewater principally from the dye and pigment industry where it is used as a chemical intermediate, however it has not been produced or consumed commercially in the US for many years. It is produced in the pyrolysis of nitrogen-containing organic matter and may be emitted to the air in this process or disposed of in the residue. Cigarette smoke contains 2-naphthylamine and may be its most ubiquitous source. 2-Naphthylamine will degrade rapidly in the atmosphere in a matter of hours to a day by a combination of photolysis and oxidation by air and hydroxyl radicals. In water and soil it will probably disappear fairly rapidly due to oxidation by free radicals, adsorption to humic materials, catalytic oxidation by cations and photolysis although no experimental data for these reactions could be found. Biodegradation may occur but only where well acclimated microorganisms exist. It would not be expected to bioconcentrate in fish. Human exposure will be occupational as well as exposure to emissions from sources where nitrogen-containing organic matter is pyrolyzed such as cigarettes, coal furnaces, etc.

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