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Chemical Datasheet
2,4,5-TRICHLOROPHENOXYACETIC ACID |
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Chemical Identifiers
| CAS Number |
UN/NA Number |
DOT Hazard Label |
USCG CHRIS Code |
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| NIOSH Pocket Guide |
International Chem Safety Card |
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2,4,5-T
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- (2,4,5-TRICHLOROPHENOXY) ACETIC ACID
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NFPA 704
data unavailable
General Description
Light tan solid (melting point 153°C). Insoluble in water. Contact may irritate the skin.
Hazards
Reactivity Alerts
none
Air & Water Reactions
Insoluble in water.
Fire Hazard
Special Hazards of Combustion Products: Toxic hydrogen chloride and phosgene gases may be formed. (USCG, 1999)
Health Hazard
Overexposure to dust by inhalation or ingestion may cause fatigue, nausea, vomiting, lowered blood pressure, convulsions, coma. Dust may irritate eyes and skin. (USCG, 1999)
Reactivity Profile
2,4,5-TRICHLOROPHENOXYACETIC ACID is a weak acid. Reacts with organic and inorganic bases to form water-soluble salts and with alcohols to form esters. Incompatible with strong oxidizing agents and strong bases. Can corrode metals, especially if moist. May harm painted surfaces (NTP, 1992).
Belongs to the Following Reactive Group(s)
- Acids, Carboxylic
- Ethers
- Halogenated Organic Compounds
- Aryl Halides
Potentially Incompatible Absorbents
No information available.
Response Recommendations
Isolation and Evacuation
Excerpt from 154
[Substances - Toxic and/or Corrosive (Non-Combustible)]:
IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.
SPILL: Increase the immediate precautionary measure distance, in the downwind direction, as necessary.
FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2020)
Firefighting
Fire Extinguishing Agents: Water, foam, dry chemical, carbon dioxide (USCG, 1999)
Non-Fire Response
Excerpt from 154
[Substances - Toxic and/or Corrosive (Non-Combustible)]:
ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Prevent entry into waterways, sewers, basements or confined areas. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS. (ERG, 2020)
Protective Clothing
Excerpt from NIOSH Pocket Guide for 2,4,5-T:
Skin: No recommendation is made specifying the need for personal protective equipment for the body.
Eyes: No recommendation is made specifying the need for eye protection.
Wash skin: No recommendation is made specifying the need for washing the substance from the skin (either immediately or at the end of the work shift).
Remove: No recommendation is made specifying the need for removing clothing that becomes wet or contaminated.
Change: No recommendation is made specifying the need for the worker to change clothing after the workshift. (NIOSH, 2023)
DuPont Tychem® Suit Fabrics
No information available.
First Aid
EYES: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.
SKIN: IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment.
INHALATION: IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. IMMEDIATELY call a physician and be prepared to transport the victim to a hospital even if no symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used; if not available, use a level of protection greater than or equal to that advised under Protective Clothing.
INGESTION: DO NOT INDUCE VOMITING. If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center. Be prepared to transport the victim to a hospital if advised by a physician. If the victim is convulsing or unconscious, do not give anything by mouth, ensure that the victim's airway is open and lay the victim on his/her side with the head lower than the body. DO NOT INDUCE VOMITING. IMMEDIATELY transport the victim to a hospital.
OTHER: Since this chemical is a known or suspected carcinogen you should contact a physician for advice regarding the possible long term health effects and potential recommendation for medical monitoring. Recommendations from the physician will depend upon the specific compound, its chemical, physical and toxicity properties, the exposure level, length of exposure, and the route of exposure. (NTP, 1992)
Physical Properties
Flash Point: data unavailable
Lower Explosive Limit (LEL): data unavailable
Upper Explosive Limit (UEL): data unavailable
Autoignition Temperature: data unavailable
Melting Point:
316°F
(NTP, 1992)
Vapor Pressure:
0 mmHg
at 68°F
approximately
(NTP, 1992)
Vapor Density (Relative to Air): data unavailable
Specific Gravity:
1.803
at 68°F
(USCG, 1999)
- Denser than water; will sink
Boiling Point:
Decomposes
(NTP, 1992)
Molecular Weight:
255.49
(NTP, 1992)
Water Solubility:
less than 0.1 mg/mL
at 69.8°F
(NTP, 1992)
Ionization Energy/Potential: data unavailable
IDLH:
250 mg/m3
(NIOSH, 2023)
AEGLs (Acute Exposure Guideline Levels)
No AEGL information available.
ERPGs (Emergency Response Planning Guidelines)
No ERPG information available.
PACs (Protective Action Criteria)
| Chemical |
PAC-1 |
PAC-2 |
PAC-3 |
| Trichlorophenoxyacetic acid, 2,4,5-; (2,4,5-T) (93-76-5)
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30 mg/m3 |
42 mg/m3 |
250 mg/m3 |
(DOE, 2018)
Regulatory Information
EPA Consolidated List of Lists
| Regulatory Name |
CAS Number/
313 Category Code |
EPCRA 302
EHS TPQ |
EPCRA 304
EHS RQ |
CERCLA RQ |
EPCRA 313
TRI |
RCRA
Code |
CAA 112(r)
RMP TQ |
| 2,4,5-T acid |
93-76-5 |
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1000 pounds |
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(EPA List of Lists, 2022)
CISA Chemical Facility Anti-Terrorism Standards (CFATS)
No regulatory information available.
OSHA Process Safety Management (PSM) Standard List
No regulatory information available.
Alternate Chemical Names
- AMINE 2,4,5-T FOR RICE
- ARBOKAN
- BCF-BUSHKILLER
- BRUSH RHAP
- BRUSH-OFF 445 LOW VOLATILE BRUSH KILLER
- BRUSHTOX
- DACAMINE
- DEBROUSSAILLANT CONCENTRE
- DEBROUSSAILLANT SUPER CONCENTRE
- DECAMINE 4T
- DED-WEED BRUSH KILLER
- DED-WEED LV-6 BRUSH KIL AND T-5 BRUSH KIL
- DINOXOL
- ENVERT-T
- ESTERICIDE T-2 AND T-245
- ESTERON
- ESTERON 245
- ESTERON 245 BE
- ESTERON BRUSH KILLER
- FARMCO FENCE RIDER
- FENCE RIDER
- FORRON
- FORST U 46
- FORTEX
- FRUITONE A
- INVERTON 245
- LINE RIDER
- PHORTOX
- REDDON
- REDDOX
- SPONTOX
- SUPER D WEEDONE
- 2,4,5-T ACID
- 2,4,5-T
- TIPPON
- TORMONA
- TRANSAMINE
- TRIBUTON
- (2,4,5-TRICHLOROPHENOXY)ACETIC ACID
- TRICHLOROPHENOXYACETIC ACID
- 2,4,5-TRICHLOROPHENOXYACETIC ACID
- TRINOXOL
- TRIOXON
- TRIOXONE
- U 46
- VEON
- VEON 245
- VERTON 2T
- VISKO RHAP LOW VOLATILE ESTER
- WEEDAR
- WEEDONE
- WEEDONE 2,4,5-T