Methyl diclofop

  • Illoxan
  • Diclofop
  • Hoegrass
  • Hoelon
  • Methyl 2[4-(2,4-dichlorophenoxy)phenoxy]propionate
  • Propanoic acid, 2-[4-(2,4-dichlorophenoxy)phenoxy]-, methyl ester
Formula
C16H14Cl2O4
Structure
Description
Colorless crystals.
Uses
Control of broad-leafed plants in row crops, defoliants, general brush control. Chlorophenoxy compounds, from table.

Registry Numbers and Inventories.
CAS
51338-27-3
EC (EINECS/ELINCS)
257-141-8
EC Index Number
607-165-00-3
EC Class
Harmful; Sensitising; Dangerous for the Environment
RTECS
UF1180000
RTECS class
Agricultural Chemical and Pesticide
UN (DOT)
2765
Merck
12,3133
Beilstein/Gmelin
2224754
EPA OPP
328500
Swiss Giftliste 1
G-4857
Austrailia AICS
Listed
New Zealand
Listed

Properties.
Formula
C16H14Cl2O4
Formula mass
341.19
Melting point, °C
39-41
Boiling point, °C
408
Vapor pressure, mmHg
7E-7 (25 C)
Density
1.30 g/cm3 (40 C)
Solubility in water
Insoluble
Partition coefficient, pKow
4.65
Heat of vaporization
66.0 kJ/mol

Hazards and Protection.
Storage
Store where contamination of fertilizer, seed, and foodstuffs will not occur.
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 protective gloves, clothing 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
Decomposed by UV irradiation, and by strong acids and alkalis.

Fire.
Flash Point,°C
150
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.
Hazards
Containers may explode when heated.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Poison_Class
3
Exposure effects
   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.

First aid
 
   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.

Transport.
UN number
2765
Response guide
Hazard class
3.2