Product Identification

Product Name

2-Methylmercaptobenzothiazole

Synonyms

2-(Methylthio)benzothiazole
2-Methylsulfanyl-1,3-benzothiazole
MTBT

CAS

615-22-5

Formula

C8H7NS2

Molecular Weight

181.28

EINECS

210-417-1

Beilstein/Gmelin

122357

Beilstein Reference

4-27-00-01836

Physical and Chemical Properties

Appearance

Solid

Solubility in water

Insoluble

Melting Point

52

Boiling Point

116 (0.5 torr)

pKa/pKb

11.39 (pKb)

First Aid Measures

Ingestion

If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.

Inhalation

Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.

Skin

Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Remove contaminated clothing and shoes.

Eyes

Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Handling and Storage

Storage

Store in a cool, dry, well-ventilated area away from incompatible substances. Water free area. Keep away from acids.

Handling

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Do not allow water to get into the container because of violent reaction. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation. Use with adequate ventilation.

Hazards Identification

Ingestion

May cause digestive tract disturbances.

Inhalation

May cause irritation of the mucous membranes.

Skin

May cause skin irritation.

Eyes

May cause eye irritation.

Hazards

During a fire, irritating and highly toxic gasesmay be generated by thermal decomposition or combustion.

EC Safety Phrase

S 22 24/25

Exposure Controls/Personal Protection

Personal Protection

Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.

Respirators

Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.

Fire Fighting Measures

Flash Point

>110

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Water Reactive. Material will react with water and may release a flammable and/or toxic gas. Contact with moisture or water may generate sufficient heat to ignite nearby combustible materials. Contact with acid or acid fumes evolves heat and flammable vapors. May re-ignite after fire is extinguished. May be ignited by heat, sparks, and flame. Extinguishing media: DO NOT USE WATER OR FOAM. For small fires use dry chemical, soda ash, lime or sand. For large fires use dry sand, dry chemical, soda ash or lime or withdraw from area and let fire burn. Contact with water or steam may produce toxic and flammable vapors.

Accidental Release Measures

Small spills/leaks

Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Provide ventilation. Do not get water on spilled substances or inside containers. Cover with dry earth, dry sand, or other non-combustible material followed with plastic sheet to minimize spreading and contact with water. DO NOT CLEAN-UP OR DISPOSE OF, EXCEPT UNDER SUPERVISION OF A SPECIALIST.

Stability and Reactivity

Incompatibilities

Acids, water, strong oxidizing agents.

Stability

Stable under normal temperatures and pressures. Reacts with water to form toxic fumes.

Decomposition

Nitrogen oxides, toxic fumes of sodium oxide.