Product Identification

Product Name

Benzothiazole

Synonyms

1-Thia-3-azaindene
Benzosulfonazole
FEMA number 3256
O-2857
USAF ek-4812
Vangard BT

CAS

95-16-9

Formula

C7H5NS

Molecular Weight

135.19

EINECS

202-396-2

RTECS

DL0875000

RTECS Class

Primary Irritant

Merck

13,1108

Beilstein/Gmelin

109468

Beilstein Reference

4-27-00-01069

EC Class

harmful

Physical and Chemical Properties

Appearance

Clear yellow liquid, odor similar to quinoline.

Solubility in water

slightly soluble

Melting Point

1 - 3

Boiling Point

231

Vapor Pressure

0.12 (25 C)

Density

1.246 g/cm3 (20 C)

pKa/pKb

11.56 (pKb)

Partition Coefficient

2.01

Heat Of Vaporization

44.5 kJ/mol

Heat Of Combustion

-4215 kJ/mol

Usage

Flavoring substance or adjuvant.

Saturation Concentration

4.5% at 131 C (calculated)

Vapor Density

4.66

Refractive Index

1.6379 (20 C)

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. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.

Eyes

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

Handling and Storage

Storage

Keep away from heat and flame. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep away from water.

Handling

Wash thoroughly after handling. Do not allow water to get into the container because of violent reaction. Do not get on skin or in eyes. Do not ingest or inhale. Do not allow contact with water. Use only in a chemical fume hood. Keep from contact with moist air and steam.

Hazards Identification

Ingestion

Harmful if swallowed. May cause gastrointestinal irritation with nausea, vomiting and diarrhea.

Inhalation

Inhalation of vapor may cause respiratory tract irritation.

Skin

Causes mild skin irritation. May be absorbed through the skin in harmful amounts.

Eyes

Causes mild eye irritation.

Hazards

When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards.

EC Risk Phrase

R 21/22

EC Safety Phrase

S 28 36/37

UN (DOT)

2810

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

A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.

Fire Fighting Measures

Flash Point

97

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. May ignite or explode on contact with steam or moist air. Extinguishing media: Use dry sand or earth to smother fire. Use agent most appropriate to extinguish fire. DO NOT USE WATER! Contact professional fire-fighters immediately. In case of fire, use carbon dioxide, dry chemical powder or appropriate foam.

Fire Potential

Combustible material: may burn but does not ignite readily.

Accidental Release Measures

Small spills/leaks

Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Wash area with soap and water. Clean up spills immediately, using the appropriate protective equipment. Provide ventilation. Do not expose spill to water.

Stability and Reactivity

Disposal Code

1

Stability

Stable under normal temperatures and pressures. Combines vigorously or explosively with water. Volatile in steam.

Incompatibilities

Strong oxidizing agents.

Decomposition

Hydrogen cyanide, nitrogen oxides, carbon monoxide, oxides of sulfur, carbon dioxide.

Combustion Products

Fire may produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number

2810

Hazard Class

6.1

Packing Group

I; II; III

HS Code

2934 20 80