Bensulfuron methyl

  • Methyl 2-[(4,6-dimethoxypyrimidin-2-yl)ureidosulfonylmethyl]benzoate
  • DPX-F-5384
  • F-5384
  • Londax
  • Methyl alpha-(4,6-dimethoxypyrimidin-2-ylcarbamoylsulfamoyl)-o-toluate
  • Benzoic acid, 2-((((((4,6-dimethoxy-2-pyrimidinyl)amino)carbonyl)amino)sulfonyl)methyl)-, methyl ester
Formula
C16H18N4O7S
Structure
Description
Light tan solid with a sweet, woody odor.
Uses
Substance is used as a herbicide.

Registry Numbers and Inventories.
CAS
83055-99-6
EC (EINECS/ELINCS)
401-340-6
EC Index Number
607-178-00-4
R: 43 51/53
S: 24 37 61
RTECS
DG8733000
Merck
12,10458
Beilstein/Gmelin
7447488
Beilstein Reference
6-25
EPA OPP
128880
New Zealand
Listed
Korea ECL
Listed

Properties.
Formula
C16H18N4O7S
Formula mass
410.41
Melting point, °C
187
Density
1.44 g/cm3
Solubility in water
Insoluble
pKa/pKb
9.83 (pKb)
Partition coefficient, pKow
2.60

Hazards and Protection.
Storage
Store product in original container only. Store in a cool, dry place.
Protection
Long-sleeved shirt and long pants. Chemical resistant gloves made of any waterproof material such as polyethylene or polyvinylchloride. Shoes plus socks. Protective eye wear.
Small spills/leaks
Dike spill. Prevent material from entering sewers, waterways, or low areas. Shovel or sweep up.
Stability
Stable at normal temperatures and storage conditions.

Fire.
Autoignition, °C
400
Fire fighting
If area is heavily exposed to fire and if conditions permit, let fire burn itself out since water may increase the contamination area. Extinguish with water Fog, Foam, Dry Chemical, CO2. Wear self-contained breathing apparatus. Use water spray. Runoff from fire control may be a pollution hazard.
Fire potential
Not a fire or explosion hazard.
Hazards
Like most organic powders or crystals, under severe dusting conditions, this material may form explosive mixtures in air.
Health
1
 
Flammability
1
 
 
Reactivity
0
 

Health.
Exposure effects
   Ingestion
Repeated and long term ingestion exposures with Bensulfuron Methyl caused decreased body weight, increased liver weight, pathological changes of the liver and kidneys, anemia, and altered hematology and clinical chemistry.
   Inhalation
Single inhalation exposure caused decreased body weight with nasal and ocular discharge.
   Eyes
Causes substantial but temporary eye injury.

First aid
 
   Ingestion
Call poison control center or doctor immediately for treatment advice. Have a person sip a glass of water if able to swallow. Do not induce vomiting unless told to do so by the poison control center or doctor. Do not give anything by mouth to an unconscious person.
   Inhalation
No specific intervention is indicated, as the compound is not likely to be hazardous by inhalation. Consult a physician if necessary.
   Skin
Take off contaminated clothing. Rinse skin immediately with plenty of water for 15-20 minutes.Call a poison control center or doctor for treatment advice.
   Eyes
Hold eye open and rinse slowly and gently with water for 15-20 minutes. Remove contact lenses, if present,after the first 5 minutes, then continue rinsing eye. Call a poison control center or doctor for treatment advice.

Transport.