# NIOSH Pocket Guide to Chemical Hazards
Dinitro-o-cresol | CAS 534-52-1
CH3C6H2OH(NO2)2 | RTECS GO9625000
Synonyms & Trade Names 4,6-Dinitro-o-cresol; 3,5-Dinitro-2-hydroxytoluene; 4,6-Dinitro-2-methyl phenol; DNC; DNOC | DOT ID & Guide 1598 153
Exposure Limits | NIOSH REL: TWA 0.2 mg/m3 [skin]
OSHA PEL: TWA 0.2 mg/m3 [skin]
IDLH 5 mg/m3 | Conversion
Physical Description Yellow, odorless solid. [insecticide]
MW: 198.1 | BP: 594°F | MLT: 190°F | Sol: 0.01%
VP: 0.00005 mmHg | IP: ? |  | Sp.Gr: 1.1 (estimated)
Fl.P: NA | UEL: NA | LEL: NA | MEC: 30 g/m3
Noncombustible Solid
Incompatibilities & Reactivities Strong oxidizers
Measurement Methods NIOSH S166 (II-5)
Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated/Daily Remove: When wet or contaminated Change: Daily | First Aid (See procedures) Eye: Irrigate immediately Skin: Soap wash immediately Breathing: Respiratory support Swallow: Medical attention immediately
Respirator Recommendations NIOSH/OSHA Up to 2 mg/m3: (APF = 10) Any dust and mist respirator with a full facepiece Up to 5 mg/m3: (APF = 50) Any air-purifying, full-facepiece respirator with a high-efficiency particulate filter/(APF = 25) Any supplied-air respirator operated in a continuous-flow mode£/(APF = 25) Any powered, air-purifying respirator with a dust and mist filter£/(APF = 50) Any self-contained breathing apparatus with a full facepiece/(APF = 50) Any supplied-air respirator with a full facepiece Emergency or planned entry into unknown concentrations or IDLH conditions: (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 Sense of well being; headache, fever, lassitude (weakness, exhaustion), profuse sweating, excess thirst, tachycardia, hyperpnea, cough, shortness breath, coma
Target Organs cardiovascular system, endocrine system
See also: INTRODUCTION