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2-MERCAPTOBENZOTHIAZOLE DISULFIDEICSC: 0505
August 1997
CAS #: 120-78-5Benzothiazolyl disulfide
MBTS
2,2'-Dithiobis (benzothiazole)
UN #: 3077
EINECS #: 204-424-9

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Combustible. Gives off irritating or toxic fumes (or gases) in a fire.  Finely dispersed particles form explosive mixtures in air.  NO open flames.  PREVENT DISPERSION OF DUST. Prevent deposition of dust. Closed system, dust explosion-proof electrical equipment and lighting.  Use water spray, dry powder, foam, carbon dioxide.   

 AVOID ALL CONTACT!  
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation   Use local exhaust or breathing protection.  Fresh air, rest. 
Skin   Protective gloves. Protective clothing.  Wear protective gloves when administering first aid. Remove contaminated clothes. See Notes. Rinse and then wash skin with water and soap. 
Eyes Redness.  Wear safety goggles.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion   Do not eat, drink, or smoke during work.  Rinse mouth. 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: face shield and particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Sweep spilled substance into covered sealable containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations. 

According to UN GHS Criteria

excl mark;warnenviro;aqua
WARNING
May cause an allergic skin reaction
Very toxic to aquatic life with long lasting effects 

Transportation
UN Classification
UN Hazard Class: 9; UN Pack Group: III 

STORAGE
Store only in original container. Separated from strong oxidants. Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing. 
PACKAGING
Marine pollutant. 
2-MERCAPTOBENZOTHIAZOLE DISULFIDE ICSC: 0505
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
YELLOW POWDER WITH CHARACTERISTIC ODOUR. 

Physical dangers
Dust explosion possible if in powder or granular form, mixed with air. 

Chemical dangers
Decomposes on burning. This produces toxic and corrosive gases including carbon oxides, nitrogen oxides and sulfur oxides. Reacts with strong oxidants. This produces toxic and corrosive gases including carbon oxides, nitrogen oxides, sulfur oxides and hydrogen sulfide. 

Formula: C14H8N2S4
Molecular mass: 332.5
Melting point: 180°C
Density (at 20°C): 1.5 g/cm³
Solubility in water: very poor
Octanol/water partition coefficient as log Pow: 4.5
Flash point: 257°C 


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation of its aerosol, through the skin and by ingestion. 

Effects of short-term exposure
The substance may be irritating to the eyes. 

Inhalation risk
Evaporation at 20°C is negligible; a nuisance-causing concentration of airborne particles can, however, be reached quickly. 

Effects of long-term or repeated exposure
Repeated or prolonged contact may cause skin sensitization. See Notes. 


Occupational exposure limits
MAK: sensitization of skin (SH) 

ENVIRONMENT
The substance is very toxic to aquatic organisms. The substance may cause long-term effects in the aquatic environment. It is strongly advised not to let the chemical enter into the environment because it is persistent. 

NOTES
Do NOT take working clothes home.
Isolate contaminated clothing by sealing in a bag or other container.
2-Mercaptobenzothiazole (MBT, see ICSC #1183) a substance closely related to MBTS, is classified by IARC for its carcinogenicity.
Anyone who has shown skin sensitization due to this substance should avoid all further contact. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: Xi, N; R: 31-43-50/53; S: (2)-36/37-60-61 

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       Toxicological Abbreviations