Hexazinone

  • 3-Cyclohexyl-6-(dimethylamino)-1-methyl-1,3,5-triazine-2,4(1H,3H)-dione
  • 3-Cyclohexyl-6-(dimethylamino)-1-methyl-S-triazine-2,4(iH,3H)-dione
  • DPX 3674
  • SHA 107201
  • Velpar
Formula
C12H20N4O2
Structure
Description
Tan, free flowing granules with a slight acrid odor.
Uses
Control of many annual, biennial and perennial weeds and woody plants on noncropland areas. Selective weed control in conifers, sugarcane, pineapple, rubber trees and alfalfa.

Registry Numbers and Inventories.
CAS
51235-04-2
EC (EINECS/ELINCS)
257-074-4
EC Index Number
613-132-00-4
EC Class
Harmful; Irritant; Dangerous for the Environment
RTECS
XY7850000
RTECS class
Agricultural Chemical and Pesticide; Reproductive Effector; Primary Irritant
Merck
12,4734
Beilstein/Gmelin
618801
Beilstein Reference
5-26-10-00171
EPA OPP
107201
Canada DSL/NDSL
NDSL
US TSCA
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C12H20N4O2
Formula mass
252.32
Melting point, °C
97-100.5
Density
0.58 g/cm3 (20 C)
Solubility in water
33 g/kg @ 25 C
Refractive index
1.513 (25 C)
Partition coefficient, pKow
-4.40

Hazards and Protection.
Storage
Store product in original container only. Do not contaminate water, other pesticides, fertilizer, food or feed in storage.
Handling
Do not get in eyes. Avoid breathing dust. Avoid contact with skin. Avoid contact with clothing. USERS SHOULD: Wash hands before eating, drinking, chewing gum, using tobacco or using the toilet.
Protection
Wear goggles or face shield and rubber gloves when handling this material.
Respirators
Use NIOSH/MSHA approved respirator appropriate for exposure of concern.
Small spills/leaks
While wearing protective equipment, shovel or sweep up.
Stability
Stable at normal temperatures and storage conditions.
Incompatibilities
Strong oxidizing agents.
Decomposition
No data.

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
Flammable velpar l
Health
2
 
Flammability
1
 
 
Reactivity
0
 

Health.
Exposure effects
Coma was reported following ingestion of an herbicide containing atrazine, aminotriazole, ethylene glycol, and formaldehyde. Muscle tremors, tetany, and ataxia have been reported in animals following ingestions of triazine herbicides.
   Ingestion
Abnormal liver function.
   Inhalation
Irritation.
   Skin
Irritation.
   Eyes
Causes irreversible eye damage. Corrosive.

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.