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