2,4-D, butoxyethyl ester

  • Silvaprop 1
  • Acetic acid, (2,4-dichlorophenoxy)-2-butoxyethyl ester
  • Aqua-Kleen
  • Bladex-B
  • Butoxyethanol ester of (2,4-dichlorophenoxy) acetic acid
  • 2,4-D butoxyethyl ester
Formula
C14H18Cl2O4
Structure
Description
Amber liquid. Odorless when pure.
Uses
Herbicide

Registry Numbers and Inventories.
CAS
1929-73-3
EC (EINECS/ELINCS)
217-680-1
RTECS
AG7700000
RTECS class
Agricultural Chemical and Pesticide; Reproductive Effector
UN (DOT)
2765
Beilstein/Gmelin
1996617
Beilstein Reference
4-06-00-00911
RCRA
U240
EPA OPP
30061
Swiss Giftliste 1
G-7015
Austrailia AICS
Listed

Properties.
Formula
C14H18Cl2O4
Formula mass
321.22
Melting point, °C
157
Boiling point, °C
409
Vapor pressure, mmHg
7E-7 (25 C)
Critical temperature
539
Critical pressure
17.8
Density
1.232 g/cm3 (20 C)
Solubility in water
12 mg/L
Partition coefficient, pKow
4.27
Heat of vaporization
66.1 kJ/mol

Hazards and Protection.
Storage
Store at ambient temperatures with open venting.
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
See information for this field in accession number 8400333 (2,4-d esters).
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
Shelf life of ester formulations varies, depending on the emulsifying system. Some retain satisfactory emulsifying properties after 3 yr.

Fire.
Flash Point,°C
153
Fire fighting
Extinguish with dry chemicals, foam, or carbon dioxide. Water may be ineffective. Cool exposed containers with water.
Fire potential
Material itself does not burn or burns with difficulty.
Hazards
Containers may explode when heated.
Combustion products
Irritating hydrogen chloride may form in fire.

Health.
Poison_Class
3
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
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.
   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