Dazomet

  • Dimethylformocarbothialdine
  • 3,5-Dimethyl-1,3,5-thiadiazine-2-thione
  • Tetrahydro-3,5-dimethyl-1,3,5-thiadiazine-2-thione
Formula
C5H10N2S2
Structure
Description
White crystals or off-white powder. Pungent, acrid odor.
Uses
For soil fungi, nematodes, germinating weeds, soil insects. Preplant in seed beds for tobacco, nurseries, greenhouses, substrates for potted plants, turf, ornamentals. Anti-microbial in slimicide preparations.

Registry Numbers and Inventories.
CAS
533-74-4
EC (EINECS/ELINCS)
208-576-7
EC Index Number
613-008-00-X
EC Class
Harmful; Irritant; Dangerous for the Environment
RTECS
XI2800000
RTECS class
Agricultural Chemical and Pesticide; Drug; Primary Irritant
UN (DOT)
2588
Merck
12,2892
Beilstein/Gmelin
116039
Beilstein Reference
4-27-00-07436
RCRA
U366
EPA OPP
35602
Swiss Giftliste 1
G-1470
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C5H10N2S2
Formula mass
162.28
Melting point, °C
106
Boiling point, °C
295
Vapor pressure, mmHg
3
Vapor density (air=1)
5.6
Density
1.30 g/cm3 (20 C)
Solubility in water
30 g/L
Partition coefficient, pKow
1.96

Hazards and Protection.
Storage
Store at in a cool, dry place. It is of moderate stability but is sensitive to heat above 35 C and to moisture.
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
Protective gloves and clothing. Safety goggles or eye protection in combination with breathing protection.
Respirators
Wear a NIOSH-approved half face respirator equipped with an organic vapor/acid gas cartridge (specific for organic vapors, HCl, acid gas and SO2) with a dust/mist filter. Splash proof safety goggles should be worn while handling this chemical. Alternatively, a full face respirator, equipped as above, may be used to provide simultaneous eye and respiratory protection.
Small spills/leaks
If a spill of this chemical occurs, FIRST REMOVE ALL SOURCES OF IGNITION, then you should dampen the solid spill material with acetone and transfer the dampened material to a suitable container. Use absorbent paper dampened with acetone to pick up any remaining material. Seal your contaminated clothing and the absorbent paper in a vapor-tight plastic bag for eventual disposal. Solvent wash all contaminated surfaces with acetone followed by washing with a soap and water solution. Do not reenter the contaminated area until the Safety Officer (or other responsible person) has verified that the area has been properly cleaned.
Stability
No data.

Fire.
Fire fighting
Fires involving this material can be controlled with a dry chemical, carbon dioxide or Halon extinguisher.
Fire potential
This material is probably combustible.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Poison_Class
3
Exposure effects
The toxological properties of this substance have not been fully investigated.
   Inhalation
Highly toxic, may be fatal if inhaled, swallowed or absorbed through skin. Effects of contact or inhalation may be delayed.
   Skin
Sensitization.
   Eyes
Redness, pain.

First aid
 
   Ingestion
DO NOT INDUCE VOMITING. If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center. Be prepared to transport the victim to a hospital if advised by a physician.
   Inhalation
IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. If symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop, call a physician and be prepared to transport the victim to a hospital. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used.
   Skin
IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment.
   Eyes
First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.

Transport.
UN number
2588
Response guide
Hazard class
6.1
Packing Group
I; II; III