alpha-Naphthylamine
Synonyms & Trade Names
1-Aminonaphthalene, 1-Naphthylamine
Exposure Limits
Measurement Methods
Physical Description
Colorless crystals with an ammonia-like odor.
[Note: Darkens in air to a reddish-purple color.]
Molecular Weight
143.2
Boiling Point
573°F
Melting Point
122°F
Solubility
0.002%
Vapor Pressure
(220°F): 1 mmHg
Ionization Potential
7.30 eV
Specific Gravity
1.12
Flash Point
315°F
Upper Explosive Limit
?
Lower Explosive Limit
?
Combustible Solid
Incompatibilities & Reactivities
Oxidizes in air
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
dermatitis; hemorrhagic cystitis; dyspnea (breathing difficulty), ataxia, methemoglobinemia; hematuria (blood in the urine); dysuria; [potential occupational carcinogen]
Target Organs
Bladder, skin
Cancer Site
[bladder cancer]
Personal Protection/Sanitation
(See protection codes)
Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:When contaminated/Daily
Remove:When wet or contaminated
Change:Daily
Provide:Eyewash, Quick drench
Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:When contaminated/Daily
Remove:When wet or contaminated
Change:Daily
Provide:Eyewash, Quick drench
First Aid
(See procedures)
Eye:Irrigate immediately
Skin:Soap wash immediately
Breathing:Respiratory support
Swallow:Medical attention immediately
Eye:Irrigate immediately
Skin:Soap wash immediately
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations
NIOSH
At concentrations above the NIOSH REL, or where there is no REL, at any detectable concentration:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus
Escape:
(APF = 50) Any air-purifying, full-facepiece respirator with an N100, R100, or P100 filter.
Click here for information on selection of N, R, or P filters.
Any appropriate escape-type, self-contained breathing apparatus
See also
Page last reviewed: October 30, 2019
Content
source: National Institute for Occupational Safety and Health