2,4-Dithiobiuret

  • Thioimidodicarbonic diamide
  • Imidodicarbonimidothioic diamide
  • Dihydrothiuret
Formula
NH2CSNHCSNH2
Structure
Description
Crystalline solid.
Uses
Plasticizer, rubber accelerator, intermediate in resin mfr, in making insecticides & rodenticides, can be used to delay wilting of flowers. Reagent for the photometric determination of Mo(VI).

Registry Numbers and Inventories.
CAS
541-53-7
EC (EINECS/ELINCS)
208-784-8
S 28 36/37 45
RTECS
EC1575000
RTECS class
Other
UN (DOT)
2811
Merck
13,3407
Beilstein/Gmelin
1756621
Beilstein Reference
4-03-00-00356
RCRA
P049
EPA OPP
129003
Swiss Giftliste 1
G-1981
Canada DSL/NDSL
NDSL
US TSCA
Listed

Properties.
Formula
C2H5N3S2
Formula mass
135.21
Melting point, °C
189 - 190
Density
1.522 g/cm3 (20 C)
Solubility in water
Very soluble
pKa/pKb
11.15 (pKa)

Hazards and Protection.
Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
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
(Non-Specific -- Dithiocarbamate Pesticide, Solid, n.o.s.) Keep sparks, flames and other sources of ignition away. Keep material out of water sources and sewers. Avoid breathing dusts and fumes from burning material. Keep upwind; avoid bodily contact with the material. Do not handle broken packages without protective equipment. Wash away any material which may have contacted the body with copious amounts of water or soap and water.
Stability
No data.
Incompatibilities
May react with acids and reducing agents to form toxic hydrogen sulfide gas Organic amides/imides react with azo and diazo compounds to generate toxic gases.

Fire.
Fire fighting
(Non-Specific -- Dithiocarbamate Pesticide, Solid, n.o.s.) Wear boots, protective gloves, goggles and self-contained breathing apparatus.(Non-Specific -- Dithiocarbamate Pesticide, Solid, n.o.s.) Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.) Use water in flooding quantities as fog. Use alcohol foam, carbon dioxide or dry chemical.
Hazards
When heated to decomposition, it emits highly toxic fumes of oxides of sulfur and nitrogen.

Health.
Poison_Class
2
Exposure effects
   Ingestion
Watery diarrhea occurs in experimental animals and leads to fluid losses and dehydration.
   Inhalation
Respiratory failure has been described in exposed experimental animals. This effect has not been described in exposed humans.

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. Treatment should include recommendations listed in the oral exposure section when appropriate.
   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.
UN number
2811
Response guide
USCG CHRIS Code
TID