NIOSH Publication No. 2005-151:

NIOSH Pocket Guide to Chemical Hazards

September 2005

alpha-Naphthylamine

CAS
134-32-7

C10H7NH2

RTECS
QM1400000
Synonyms & Trade Names

1-Aminonaphthalene, 1-Naphthylamine
DOT ID & Guide
2077 / 153

Exposure
Limits

NIOSH REL: Ca See Appendix A
OSHA PEL: [1910.1004] See Appendix B
IDLH
Ca [N.D.] See: IDLH INDEX
Conversion
Physical Description
Colorless crystals with an ammonia-like odor. [Note: Darkens in air to a reddish-purple color.]
MW: 143.2
BP: 573°F
MLT: 122°F
Sol: 0.002%
VP(220°F): 1 mmHg
IP: 7.30 eV

Sp.Gr: 1.12
Fl.P: 315°F
UEL: ?
LEL: ?

Combustible Solid
Incompatibilities & Reactivities

Oxidizes in air
Measurement Methods
NIOSH 5518; OSHA 93
See: NMAM or OSHA Methods
Personal Protection & Sanitation
(See protection)
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
Respirator Recommendations
(See Appendix E) 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
Important additional information about respirator selection
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]
See also: INTRODUCTION   See ICSC CARD: 0518   See MEDICAL TESTS: 0153