2,4,5-T, butoxyethanol ester

  • Acetic acid, (2,4,5-trichlorophenoxy)-2-butoxyethyl ester
  • Bladex h
  • Butoxyethyl 2,4,5-T
  • Dinoxol
  • Hormoslyr 500t
  • (2,4,5-Trichlorophenoxy)acetic acid 2-butoxyethyl ester
Formula
C14H17Cl3O4
Structure
Uses
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.
CAS
2545-59-7
EC (EINECS/ELINCS)
219-828-0
RTECS
AJ8420000
RTECS class
Mutagen
UN (DOT)
2765
Beilstein/Gmelin
3431180
Beilstein Reference
4-06-00-00976
EPA OPP
82072
Austrailia AICS
Listed

Properties.
Formula
C14H17Cl3O4
Formula mass
355.66
Melting point, °C
200
Boiling point, °C
435
Vapor pressure, mmHg
9E-8 (25 C)
Critical temperature
556
Critical pressure
17.0
Density
1.28 g/cm3 (20 C)
Solubility in water
Insoluble
Partition coefficient, pKow
5.32
Heat of vaporization
69.1 kJ/mol

Hazards and Protection.
Storage
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.
Handling
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.
Protection
Wear appropriate chemical protective gloves, boots and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
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.
Stability
No data.

Fire.
Flash Point,°C
161
Fire fighting
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.
Fire potential
Combustible when dissolved in kerosene or diesel oil.
Hazards
Containers may explode when heated.
Combustion products
Hydrogen chloride gas and other irritating fumes may form during fires.

Health.
Exposure effects
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.
   Ingestion
Nausea, vomiting, and diarrhea have been reported. Necrosis of the gastrointestinal mucosa has been reported.
   Inhalation
Ingestion of large amounts may cause bradypnea, respiratory failure, hyperventilation, or pulmonary edema.
   Skin
Direct contact may cause skin irritation. Chlorodioxin contamination of products may produce chloracne with heavy exposure.
   Eyes
See Skin.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
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.
   Skin
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.
   Eyes
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.

Transport.
UN number
2765
Response guide
Hazard class
3.2