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2,4,5-T																				Related Pages
Synonyms & Trade Names
			2,4,5-Trichlorophenoxyacetic acid
CAS No.
			93-76-5
	RTECS No.
			AJ8400000
	DOT ID & Guide
			2765 152

FormulaCl3C6H2OCH2COOH
	Conversion
	IDLH
			250 mg/m3See: 93765

Exposure Limits
			NIOSH RELTWA 10 mg/m3OSHA PEL TWA 10 mg/m3
	Measurement Methods
			**NIOSH** 5001
					
					See: NMAM or OSHA Methods
										
Physical Description
			Colorless to tan, odorless, crystalline solid.
					[herbicide]													
										
Molecular Weight255.5	
	Boiling PointDecomposes
	Melting Point307°F
	Solubility(77°F): 0.03%
	Vapor Pressure1 x 10-7 mmHg
	Ionization Potential?											
Specific Gravity1.80	
	Flash Point?
	Upper Explosive Limit?
	Lower Explosive Limit?
Combustible Solid, but burns with difficulty.
Incompatibilities & Reactivities
			None reported
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
										
Personal Protection/Sanitation
			(See protection codes) **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 quarter-mask respirator. Click here for information on selection of N, R, or P filters.**Up to 100 mg/m3**: (APF = 10) Any particulate respirator equipped with an N95, R95, or P95 filter (including N95, R95, and P95 filtering facepieces) except quarter-mask respirators. The following filters may also be used: N99, R99, P99, N100, R100, P100. Click here for information on selection of N, R, or P filters.(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 an N100, R100, or P100 filter. Click here for information on selection of N, R, or P filters.(APF = 25) Any powered, air-purifying respirator with a high-efficiency particulate 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 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
					Important additional information about respirator selection
See also
			INTRODUCTION
					  ICSC CARD: 0075
					  MEDICAL TESTS: 0249

			
							

			Page last reviewed:  October 30, 2019						Content
							source: 	National Institute for Occupational Safety and Health NIOSH Pocket Guide to Chemical Hazards
Introduction
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Appendices
A – NIOSH Potential Occupational Carcinogens
B – Thirteen OSHA-Regulated Carcinogens
C – Supplementary Exposure Limits
D – Substances with No Established RELs
E – OSHA Respirator Requirements for Selected Chemicals
F – Miscellaneous Notes
G – 1989 Air Contaminants Update Project: Exposure Limits NOT in Effect
Type C & CE – Definitions for Type C and Type CE Respirators
Personal Protection and Sanitation Codes
First Aid Procedures Follow NIOSH Facebook
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