2,4,5-T, butoxyethanol ester
- Acetic acid, (2,4,5-trichlorophenoxy)-2-butoxyethyl ester
- Bladex h
- Butoxyethyl 2,4,5-T
- Hormoslyr 500t
- (2,4,5-Trichlorophenoxy)acetic acid 2-butoxyethyl ester
2,4,5-T salts & esters are used widely to control woody plants on industrial sites & rangeland. 2,4,5-T salts and esters, former use.
Registry Numbers and Inventories.
Melting point, °C
Boiling point, °C
Vapor pressure, mmHg
9E-8 (25 C)
1.28 g/cm3 (20 C)
Solubility in water
Partition coefficient, pKow
Heat of vaporization
Hazards and Protection.
Keep containers of 2,4,5-t and derivatives tightly closed at ambient temperature in a well-ventilated area away from food and feed products, heat, and water. Do not store near other agrochemicals or seeds.
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Wear appropriate chemical protective gloves, boots and goggles.
Wear positive pressure self-contained breathing apparatus (SCBA).
Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Cover with plastic sheet to prevent spreading. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS.
DOT recommendations for 2,4,5-t amine, ester, or salt- use dry chemical, carbon dioxide, water fog, or spray. Dry chemical and carbon dioxide are preferable due to noxious vapors. Contain runoff to avoid possible water pollution. updated 12/1984.
Combustible when dissolved in kerosene or diesel oil.
Containers may explode when heated.
Hydrogen chloride gas and other irritating fumes may form during fires.
Low dose exposures - vertigo, headache, malaise, and paresthesias may occur depending on the specific compound involved. High dose exposures - muscle twitching, spasms, profound weakness, polyneuritis, and unconsciousness may occur depending on the specific compound involved. Idiosyncratic reactions - peripheral neuropathies 2,4-D and 2,4,5-T have caused adverse reproductive effects in experimental animals. Allegations of human birth defects due to these compounds have not been confirmed.
Nausea, vomiting, and diarrhea have been reported. Necrosis of the gastrointestinal mucosa has been reported.
Ingestion of large amounts may cause bradypnea, respiratory failure, hyperventilation, or pulmonary edema.
Direct contact may cause skin irritation. Chlorodioxin contamination of products may produce chloracne with heavy exposure.
Seek medical assistance.
Move patient to fresh air. Monitor for respiratory distress. If cough or difficulty breathing develops, evaluate for respiratory tract irritation, bronchitis, or pneumonitis. Administer oxygen and assist ventilation as required. Treat bronchospasm with beta2 agonist and corticosteroid aerosols.
Remove contaminated clothing and jewelry. Wash the skin, including hair and nails, vigorously; do repeated soap washings. Discard contaminated clothing. Treat dermal irritation or burns with standard topical therapy. Patients developing dermal hypersensitivity reactions may require treatment with systemic or topical corticosteroids or antihistamines.
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.