Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information
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4-(2,4-Dichlorophenoxy)butanoic acid(94-82-6)

Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information

Product Identification

Product Name
4-(2,4-Dichlorophenoxy)butanoic acid
Synonyms
(2,4-Dichlorophenoxy)butyric acid
2,4-D butyric acid
2,4-DB
4-(2,4-Dichlorophenoxy)butanoic acid
Butirex
Embutone
CAS
94-82-6
Formula
C10H10Cl2O3
Molecular Weight
249.09
EINECS
202-366-9
RTECS
ES9100000
RTECS Class
Agricultural Chemical and Pesticide; Mutagen; Reproductive Effector
Merck
13,2855
Beilstein/Gmelin
1976809
Beilstein Reference
4-06-00-00927
EC Index Number
607-083-00-8
EC Class
Harmful; Dangerous for the Environment

Physical and Chemical Properties

Appearance
Colorless crystals.
Solubility in water
46 ppm at 25 C
Melting Point
118
Boiling Point
150 (0.2 torr)
Vapor Pressure
.000004
pKa/pKb
4.95 (pKa)
Partition Coefficient
3.53
Usage
Control of broad-leafed plants in row crops, defoliants, general brush control. Chlorophenoxy compounds, from table.

First Aid Measures

Ingestion
Seek medical assistance.
Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult.
Skin
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists.
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
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
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

Ingestion
Nausea, vomiting, and diarrhea may be noted following ingestion.
Inhalation
Highly toxic, may be fatal if inhaled, swallowed or absorbed through skin. Effects of contact or inhalation may be delayed.
Skin
Cyanosis unresponsive to oxygen therapy may be noted in patients with methemoglobinemia due to absorption of excessive amounts of these agents.
Eyes
See Skin.
Hazards
Containers may explode when heated.
EC Risk Phrase
R 22 51/53
EC Safety Phrase
S 25 29 46 61
UN (DOT)
2765

Exposure Controls/Personal Protection

Personal Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Poison Class
3

Fire Fighting Measures

Fire Fighting
Small Fires: Dry chemical, carbon dioxide or water spray. Large Fires: Water spray, fog or regular foam.
Fire Potential
Combustible material: may burn but does not ignite readily.

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
No data.
Combustion Products
Fire may produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number
2765
Hazard Class
3.2
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