Methabenzthiazuron

  • 1-(Benzothiazol-2-yl)-1,3-dimethylurea
  • 1-Benzothiazol-2-yl-1,3-dimethylurea
  • 1-(2-Benzothiazolyl)-1,3-dimethylurea
Formula
C10H11N3OS
Structure
Uses
Selective herbicide.

Registry Numbers and Inventories.
CAS
18691-97-9
EC (EINECS/ELINCS)
242-505-0
EC Index Number
613-137-00-1
RTECS
YR8980000
RTECS class
Agricultural Chemical and Pesticide
UN (DOT)
3077
Merck
12,6002
Beilstein/Gmelin
196633
Beilstein Reference
4-27-00-04842
EPA OPP
281300
Swiss Giftliste 1
G-3734
Austrailia AICS
Listed
New Zealand
Listed
Korea ECL
Listed

Properties.
Formula
C10H11N3OS
Formula mass
221.28
Melting point, °C
116 - 122
Boiling point, °C
381
Solubility in water
Insoluble
pKa/pKb
9.67 (pKa)
Partition coefficient, pKow
2.28

Hazards and Protection.
Storage
Keep tightly closed.
Protection
Protective gloves. Chemical safety goggles.
Respirators
Wear dust mask.
Small spills/leaks
Sweep up, place in a bag and hold for waste disposal. Avoid raising dust. Ventilate area and wash spill site after material pickup is complete.
Stability
Stable at normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Carbon monoxide, Carbon dioxide, Nitrogen oxides, Sulfur oxides.

Fire.
Fire fighting
Extinguish using Water spray. Carbon dioxide, dry chemical powder, or appropriate foam. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.
Fire potential
May burn but does not ignite readily.
Hazards
Emits toxic fumes under fire conditions.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
1
 
Flammability
0
 
 
Reactivity
0
 

Health.
Poison_Class
4
Exposure effects
Avoid contact and inhalation.
   Ingestion
May be harmful if swallowed.
   Inhalation
May be harmful if inhaled. Material may be irritating to mucous membranes and upper respiratory tract.
   Skin
May cause skin irritation. May be harmful if absorbed through the skin.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
If swallowed, wash out mouth with water provided person is conscious. Call a physician.
   Inhalation
If inhaled, remove to fresh air. If breathing becomes difficult, call a physician.
   Skin
In case of contact, immediately wash skin with soap and copious amounts of water.
   Eyes
In case of contact with eyes, flush with copious amounts of water for at least 15 minutes. Assure adequate flushing by separating the eyelids with fingers. Call a physician.

Transport.
UN number
3077
Response guide
Hazard class
9
Packing Group
III