Chlorsulfuron

  • 2-Chloro-n-(((4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino)carbonyl)benzenesulfonamide
  • 1-(2-Chlorophenylsulfonyl)-3-(4-methoxy-6-methyl-1,3,5-triazin-2yl)urea
  • Glean
  • Khardin
  • Tuligen
  • N-(2-Chlorophenyl)sulfonyl-N'-(4-methyl-6-methoxy-2-triazinyl)urea
Formula
C12H12ClN5O4S
Structure
Description
Colorless crystals.
Uses
Control of most broadleaf weeds, annual ryegrass, including acreage enrolled in the conservation reserve program. For some annual grasses in wheat, barley, durum, rye, triticale, oats.

Registry Numbers and Inventories.
CAS
64902-72-3
EC (EINECS/ELINCS)
265-268-5
EC Index Number
613-121-00-4
EC Class
Dangerous for the Environment
RTECS
YS6640000
RTECS class
Agricultural Chemical and Pesticide
Merck
12,2244
Beilstein/Gmelin
577255
Beilstein Reference
5-26-09-00405
EPA OPP
118601
Austrailia AICS
Listed
New Zealand
Listed

Properties.
Formula
C12H12ClN5O4S
Formula mass
357.78
Melting point, °C
186 - 188
Boiling point, °C
563
pKa/pKb
3.6 (pKa)
Partition coefficient, pKow
2.63

Hazards and Protection.
Storage
Store in a cool, dry area. Do not contaminate water, food, or feed by storage. Keep from contact with fertilizers, insecticides, fungicides, and seeds during storage.
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
Chemical splash goggles in compliance with OSHA regulations are advised; however, OSHA regulations also permit other type safety glasses. Whre chemical resistant gloves. To prevent repeated or prolonged skin contact, wear impervious clothing and boots.
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
No data.
Incompatibilities
Strong oxidizing agents.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Use agent most appropriate to extinguish fire.
Fire potential
Nonflammable

Health.
Exposure effects
   Ingestion
Nausea, vomiting, and diarrhea may be noted following ingestion.
   Skin
Cyanosis unresponsive to oxygen therapy may be noted in patients with methemoglobinemia due to absorption of excessive amounts of these agents.

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.