Crag herbicide

  • Sesone
  • Sodium 2-(2,4-dichloro-phenoxy)ethyl sulfate
  • Disul
  • 2-(2,4-dichlorophenoxy)ethyl hydrogen sulphate sodium salt
Formula
C8H7Cl2NaO5S
Structure
Description
Colorless to white crystalline solid. Odorless.
Uses
Used as an herbicide.

Registry Numbers and Inventories.
CAS
136-78-7
EC (EINECS/ELINCS)
205-259-5
RTECS
KK4900000
RTECS class
Agricultural Chemical and Pesticide
Merck
12,3430
Beilstein/Gmelin
NA
EPA OPP
30602
Swiss Giftliste 1
G-2587

Properties.
Formula
C8H7Cl2NaO5S
Formula mass
309.1
Melting point, °C
170
Decomposition point, °C
245
Vapor pressure, mmHg
1 (25 C)
Density
1.70 g/cm3 (20 C)
Solubility in water
25 g / 100 ml

Hazards and Protection.
Storage
Keep in well ventilated area.
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 eye protection and protective clothing to prevent skin and eye contact.
Respirators
Use NIOSH/MSHA approved respirator appropriate for exposure of concern.
Small spills/leaks
Evacuate area and ventilate. Wear protective equipment. If required, use an inert absrobent. Sweep up and place in an appropriate container for disposal. Wash contaminated surfaces.
Stability
Non-volatile.
Incompatibilities
Avoid contact with strong oxidizers, acids.
Decomposition
Decomposition @ boiling point when heated to decomposition it emits very toxic fumes of cl-, na2o and sox.

Fire.
Fire fighting
Self-contained breathing apparatus, rubber gloves, hats, suits and boots must be worn. Highly toxic fumes are imminent.

Health.
Exposure limit(s)
OSHA PEL: TWA 15 mg/m3 (total) TWA 5 mg/m3 (resp) NIOSH REL: TWA 10 mg/m3 (total) TWA 5 mg/m3 (resp) NIOSH IDLH: 500 mg/m3
Poison_Class
4
Exposure effects
Seizures have occurred in animals and humans. Coma, muscle fasciculations, and flaccid paralysis may also occur.
   Ingestion
Sesone is a gi irritant in high concentrations. Nausea, vomiting, and diarrhea may occur.
   Inhalation
Pulmonary hemorrhage occurred in fatally poisoned animals.
   Skin
Necrosis and edema were seen when a 5% solution in acetone was applied to rabbit skin. A 1% solution did not produce harm.
   Eyes
Corneal necrosis developed when a 5% solution was dropped into rabbit eyes. Constriction of the pupil may be present in overdose.

First aid
 
   Ingestion
Seek medical attention. If individual is drowsy or unconscious, do not give anything by mouth; place individual on the left side with the head down. Contact a physician, medical facility, or poison control center for advice about whether to induce vomiting. If possible, do not leave individual unattended.
   Inhalation
If symptoms develop, move individual away from exposure and into fresh air. If symptoms persist, seek medical attention. If breathing is difficult, administer oxygen. Keep person warm and quiet; seek immediate medical attention.
   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.