Product Identification

Product Name

2,4-Dichlorophenoxyacetic acid isopropyl ester

Synonyms

Acetic acid, (2,4-dichlorophenoxy)-, 1-methylethyl ester
Esteron 44
Isopropyl 2,4-D ester
Niagara Estasol
Propan-2-yl 2-(2,4-dichlorophenoxy)acetate
Weedone 128

CAS

94-11-1

Formula

C11H12Cl2O3

Molecular Weight

263.13

EINECS

202-305-6

RTECS

AG8750000

RTECS Class

Agricultural Chemical and Pesticide; Tumorigen; Reproductive Effector

Beilstein/Gmelin

2333761

Beilstein Reference

4-06-00-00910

Physical and Chemical Properties

Appearance

Colorless liquid dependent on purity/.

Solubility in water

Insoluble

Melting Point

24

Boiling Point

323

Vapor Pressure

0.0003 (25 C)

Density

1.269 g/cm3 (20 C)

Partition Coefficient

3.55

Heat Of Vaporization

56.5 kJ/mol

Usage

Herbicide for pasture & rangelands, agricultural use-eg, wheat, corn, grain sorghum, rice and other grains, industrialcommercial uses, lawns, turf, & aquatic use, other field crops-eg, nuts, component of herbicide for jungle defoliation-former use 2,4-d and derivatives.

Refractive Index

1.5208 (25 C)

First Aid Measures

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.

Handling and Storage

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.

Hazards Identification

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.

Ingestion

Nausea, vomiting, and diarrhea have been reported. Necrosis of the gastrointestinal mucosa has been reported.

Hazards

Containers may explode when heated.

UN (DOT)

2765

Exposure Controls/Personal Protection

Personal Protection

See information, this field, in accession number 8400333 (2,4-d esters).

Respirators

Wear positive pressure self-contained breathing apparatus (SCBA).

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.

Poison Class

3

Fire Fighting Measures

Flash Point

126

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.

Accidental Release Measures

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 and Reactivity

Stability

Shelf life of ester formulations varies, depending on the emulsifying system. Some retain satisfactory emulsifying properties after 3 yr.

Combustion Products

Irritating hydrogen chloride may form in fire.

Transport Information

UN Number

2765

Hazard Class

3.2