Product Identification

Product Name

2(3H)-Benzothiazolethione sodium salt

Synonyms

2-Mercaptobenzothiazole sodium salt
Duodex
Nacap
Nambt
Sodium 2-benzothiazolethioate

CAS

2492-26-4

Formula

C7H4NNaS2

Molecular Weight

189.24

EINECS

219-660-8

RTECS

DL6825000

Beilstein/Gmelin

4164690

Physical and Chemical Properties

Appearance

Brown sometimes turbid liquid, (will darken with aging). Distinctive odor.

Solubility in water

Soluble.

Density

1.255 g/cm3 (25 C)

Heat Of Vaporization

Usage

Corrosion inhibitor for nonferrous metals, antifreeze, paper mill systems 50% aqueous soln.

Odor threshold

16 ppm

First Aid Measures

Ingestion

Administer charcoal as a slurry (240 ml water/30 g charcoal). Usual dose: 25 to 100 g in adults/adolescents.

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. Dermatitis - is usually controlled by removal of the offending agent, but may occasionally require a steroid cream.

Eyes

If symptoms develop, immediately move individual away from exposure and into fresh air. Flush eyes gently with water for at least 15 minutes while holding eyelids apart; seek immediate medical attention.

Handling and Storage

Storage

Keep in a cool, dry location in a sealed container.

Handling

No special requirements. Good housekeeping dictates that containers should be kept closed when not in use to minimize contamination. Keep away from acids.

Hazards Identification

Inhalation

Signs and symptoms of excessive exposure may be anaesthetic or narcotic effects.

Skin

Dermatitis has been reported by several authors due to garments containing rubber contaminated with mbt or contact with oil containing mbt. The compound itself is not highly irritating.

Eyes

May cause slight transient eye irritation due to alkaline nature of material.

Ingestion

Amounts swallowed incidentally are not likely to cause injury apart from mild alkaline effects.

Exposure Controls/Personal Protection

Personal 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

Respiratory protection is not generally required.

Exposure Effects

Seizures have been reported in animals given 335 mg/kg.

Poison Class

4

Fire Fighting Measures

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Use agent most appropriate to extinguish fire.

Accidental Release Measures

Small spills/leaks

Clean up personnel should wear full protective clothing. Do not allow spill material to enter sewers, storn water drains, etc. Do not allow to mix with acids. Soak up spill with nonreactive absorbent material and place in a secure container pending disposal. Wash residue with copious amounts of water, sewer disposal acceptable.

Stability and Reactivity

Stability

No data.

Incompatibilities

Strong oxidizing agents.

Decomposition

Oxides of carbon and sulfur.