NIOSH Pocket Guide to Chemical Hazards

4-Dimethylaminoazobenzene CAS 60-11-7
C6H5NNC6H4N(CH3)2 RTECS BX7350000
Synonyms & Trade Names
Butter yellow; DAB; p-Dimethylaminoazobenzene; N,N-Dimethyl-4-aminoazobenzene; Methyl yellow
DOT ID & Guide
NIOSH REL: Ca See Appendix A
OSHA PEL: [1910.1015] See Appendix B
IDLH Ca [N.D.] Conversion
Physical Description
Yellow, leaf-shaped crystals.
MW: 225.3
BP: Sublimes
MLT: 237°F
Sol: 0.001%
VP: 0.0000003 mmHg (est.)
IP: ?

Sp.Gr: ?
Fl.P: ?
UEL: ?
LEL: ?

Incompatibilities & Reactivities
None reported
Measurement Methods
Personal Protection & Sanitation
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 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 a high-efficiency particulate filter/Any appropriate escape-type, self-contained breathing apparatus
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms Enlarged liver; liver, kidney disturbance; contact dermatitis; cough, wheezing, dyspnea (breathing difficulty); bloody sputum; bronchial secretions; frequent urination, hematuria (blood in the urine), dysuria; [potential occupational carcinogen]
Target Organs Skin, respiratory system, liver, kidneys, bladder

Cancer Site [in animals: liver & bladder tumors]