Ethylenebisdithiocarbamate, disodium

  • Carbon d
  • Chem-bam
  • Disodium 1,2-ethanediylbis(carbamodithioate)
  • Disodium ethylenebis(dithiocarbamate)
  • Disodium ethylene-1,2-bisdithiocarbamate
  • Dithane a-40
Formula
C4H6N2Na2S4
Structure
Description
Colorless to light amber solid with a a slight odor.
Uses
Algicide, fungicide.

Registry Numbers and Inventories.
CAS
142-59-6
EC (EINECS/ELINCS)
205-547-0
EC Index Number
006-014-00-3
EC Class
Harmful; Irritant; Sensitising; Dangerous for the Environment
RTECS
FA6825000
RTECS class
Agricultural Chemical and Pesticide; Mutagen; Reproductive Effector
UN (DOT)
2771
Merck
12,6426
Beilstein/Gmelin
4165796
RCRA
U114
EPA OPP
14503
Swiss Giftliste 1
G-2554
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C4H6N2S4*2Na
Formula mass
256.35
Melting point, °C
195 - 198
Density
1.14 g/cm3 (20 C)
Solubility in water
200 g/L at 20 C

Hazards and Protection.
Storage
Keep in well ventilated area.
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
Wear appropriate protective gloves, clothing and goggles.
Respirators
Organic vapor acid gas canister; available in the cab or cockpit and worn while exiting.
Small spills/leaks
Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Cover with plastic sheet to prevent spreading. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS.
Stability
Unstable in dry, crystalline form decomposed by light, moisture and heat. Stable as an aqueous solution.
Incompatibilities
Incompatible with acids, peroxides, and acid halides.

Fire.
Fire fighting
Self-contained breathing apparatus, rubber gloves, hats, suits and boots must be worn. Highly toxic fumes are imminent.
Fire potential
Non-Combustible
Hazards
If water solution boils, poisonous hydrogen sulfide and highly flammable carbon disulfide vapors form.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Poison_Class
3
Exposure effects
Exposure to thiram or mbdt-carb (based on animal studies) may cause weakness, ataxia, ascending paralysis and hypothermia. Peripheral neuropathy (pain, numbness and weakness of the extremities) has been noted following exposure to thiuram (the ethyl analog of thiram). No adverse reproductive effects (testicular parameters) in male mice were observed following methyl thiophanate doses up to 1000 mg/kg orally for 5 consecutive days (Traina et al, 1998). Maternal toxicity was evident in female rats.
   Ingestion
Nausea, vomiting and diarrhea may occur.
   Inhalation
Respiratory failure, requiring ventilatory support, has been reported following ingestions.
   Skin
Exposure to dusts, sprays, solutions, wettable powder suspensions or emulsions of these agents may lead to skin and mucous membrane irritation.
   Eyes
See Inhalation.

First aid
 
   Ingestion
Ipecac induced vomiting is not recommended because of the potential for cns depression and seizures. Consider after ingestion of a potentially life-threatening amount of poison if it can be performed soon after ingestion (generally within 1 hour). Activated charcoal: administer charcoal as a slurry (240 ml water/30 g charcoal). Usual dose: 25 to 100 g in adults/adolescents. Intravenous fluids may be useful in restoring extracellular fluid volume following severe vomiting and diarrhea. Oxygen therapy is effective in relieving the distress of antabuse-like reactions rarely associated with exposure to thiram and possibly the mbdt-carb compounds. No specific antidotes are available for poisoning by these compounds. Activated charcoal: administer charcoal as a slurry (240 ml water/30 g charcoal). Usual dose: 25 to 100 g in adults/adolescents.
   Inhalation
Remove to fresh air; administer artificial respiration and oxygen, if indicated.
   Skin
Wash thoroughly with soap and water.
   Eyes
Immediately flush with running water for at least 20 minutes.

Transport.
UN number
2771
Response guide
Hazard class
6.1
Packing Group
I; II; III
 
USCG CHRIS Code
NAB