Methylene bis(thiocyanate)

  • Methylenedithiocyanate
  • Dithiocyanatomethane
  • Methylene thiocyanate
  • Methylenedirhodanide
  • Nalco 5793
  • Slimicide MC
Formula
C3H2N2S2
Structure
Description
Yellow to light orange-colored mass or yellow powder.
Uses
Antifouling agent.

Registry Numbers and Inventories.
CAS
6317-18-6
EC (EINECS/ELINCS)
228-652-3
EC Index Number
615-020-00-0
EC Class
Very toxic; Toxic; Corrosive; Sensitising; Dangerous for the Environment
RTECS
XL1560000
RTECS class
Tumorigen; Reproductive Effector
UN (DOT)
2811
Beilstein/Gmelin
1743370
Beilstein Reference
3-03-00-00288
EPA OPP
68102
Swiss Giftliste 1
G-43842
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C3H2N2S2
Formula mass
130.19
Melting point, °C
89 - 90
Boiling point, °C
289
Critical temperature
529
Critical pressure
42.6
Solubility in water
Soluble
Partition coefficient, pKow
2.03

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
If Tyvek-type disposable protective clothing is not worn during handling of this chemical, wear disposable Tyvek-type sleeves taped to your gloves.
Respirators
Not available.
Small spills/leaks
Should a spill occur while you are handling this chemical, FIRST REMOVE ALL SOURCES OF IGNITION, then you should dampen the solid spill material with 60-70% ethanol and transfer the dampened material to a suitable container. Use absorbent paper dampened with 60-70% ethanol to pick up any remaining material. Seal the absorbent paper, and any of your clothes, which may be contaminated, in a vapor-tight plastic bag for eventual disposal. Solvent wash all contaminated surfaces with 60-70% ethanol 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.
Incompatibilities
React vigorously with strong bases and strong oxidizing agents such as hydrogen peroxide Reacts slowly and exothermically with aqueous acids.
Decomposition
When heated to decomposition it emits very toxic fumes of NOx and SOx.

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.
Hazards
Contact with metals may evolve flammable hydrogen gas.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Poison_Class
2
Exposure effects
Thiocyanate intoxication may result in cerebral excitement, delirium, seizures, confusion, irritability, and coma. Elevated levels of thiocyanate have been measured in umbilical cord blood and amniotic fluid of pregnant women who smoke.
   Ingestion
Not available.
   Inhalation
Not available.
   Skin
Not available.
   Eyes
Lachrymator.

First aid
 
   Ingestion
DO NOT INDUCE VOMITING. Corrosive chemicals will destroy the membranes of the mouth, throat, and esophagus and, in addition, have a high risk of being aspirated into the victim's lungs during vomiting which increases the medical problems. 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. IMMEDIATELY transport the victim to a hospital. If the victim is convulsing or unconscious, do not give anything by mouth, ensure that the victim's airway is open and lay the victim on his/her side with the head lower than the body. DO NOT INDUCE VOMITING. Transport the victim IMMEDIATELY to a hospital.
   Inhalation
IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. IMMEDIATELY call a physician and be prepared to transport the victim to a hospital even if no symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop. 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. IMMEDIATELY call a hospital or poison control center even if no symptoms (such as redness or irritation) develop. IMMEDIATELY transport the victim to a hospital for treatment after washing the affected areas.
   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
2811
Response guide
Hazard class
6.1
Packing Group
I; II; III