Synonyms & Trade NamesButter yellow, DAB, p-Dimethylaminoazobenzene, N,N-Dimethyl-4-aminoazobenzene, Methyl yellow
DOT ID & Guide
See: IDLH INDEX
Physical DescriptionYellow, leaf-shaped crystals.
Vapor Pressure0.0000003 mmHg (est.)
Upper Exposive Limit?
Lower Explosive Limit?
Incompatibilities & ReactivitiesNone reported
Exposure Routesinhalation, skin absorption, ingestion, skin and/or eye contact
SymptomsEnlarged 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 OrgansSkin, respiratory system, liver, kidneys, bladder
Cancer Site[in animals: liver & bladder tumors]
Personal Protection/Sanitation(See protection codes)
Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:When contaminated/Daily
Remove:When wet or contaminated
Provide:Eyewash, Quick drench
First Aid(See procedures)
Skin:Soap wash immediately
Swallow:Medical attention immediately
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
(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
- Page last reviewed:April 11, 2016
- Page last updated:April 11, 2016
- Content source:
- National Institute for Occupational Safety and Health (NIOSH) Education and Information Division