# NIOSH Pocket Guide to Chemical Hazards
2,4,5-T | CAS 93-76-5
Cl3C6H2OCH2COOH | RTECS AJ8400000
Synonyms & Trade Names 2,4,5-Trichlorophenoxyacetic acid | DOT ID & Guide 2765 152
Exposure Limits | NIOSH REL: TWA 10 mg/m3
OSHA PEL: TWA 10 mg/m3
IDLH 250 mg/m3 | Conversion
Physical Description Colorless to tan, odorless, crystalline solid. [herbicide]
MW: 255.5 | BP: Decomposes | MLT: 307°F | Sol(77°F): 0.03%
VP: 1 x 10-7 mmHg | IP: ? |  | Sp.Gr: 1.80
Fl.P: ? | UEL: ? | LEL: ? |
Combustible Solid, but burns with difficulty.
Incompatibilities & Reactivities None reported
Measurement Methods NIOSH 5001
Personal Protection & Sanitation Skin: No recommendation Eyes: No recommendation Wash skin: No recommendation Remove: No recommendation Change: No recommendation | First Aid (See procedures) Eye: Irrigate immediately Skin: Soap wash Breathing: Respiratory support Swallow: Medical attention immediately
Respirator Recommendations NIOSH/OSHA Up to 50 mg/m3: (APF = 5) Any dust and mist respirator Up to 100 mg/m3: (APF = 10) Any dust and mist respirator except single-use and quarter-mask respirators/(APF = 10) Any supplied-air respirator Up to 250 mg/m3: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode/(APF = 50) Any air-purifying, full-facepiece respirator with a high-efficiency particulate filter/(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, ingestion, skin and/or eye contact
Symptoms In animals: ataxia; skin irritation, acne-like rash; liver damage
Target Organs Skin, liver, gastrointestinal tract
See also: INTRODUCTION