Product Identification

Product Name

1H-Benzotriazole

Synonyms

1,2,3-Benzotriazole
1,2,3-Triazaindene
1H-Benzotriazol
Azimidobenzene

CAS

95-14-7

Formula

C6H5N3

Molecular Weight

119.13

EINECS

202-394-1

RTECS

DM1225000

RTECS Class

Agricultural Chemical and Pesticide; Tumorigen; Mutagen

Merck

13,1109

Beilstein/Gmelin

112133

Beilstein Reference

4-26-00-00093

EC Class

harmful, irritant, dangerous for the environment

Physical and Chemical Properties

Appearance

White to light tan crystalline powder, odorless.

Solubility in water

20 g/L

Melting Point

99

Boiling Point

350

Vapor Pressure

2.4E-5 (25 C)

Density

1.34 g/cm3

pKa/pKb

5.63 (pKb)

Partition Coefficient

1.44

Heat Of Vaporization

60.5 kJ/mol

Heat Of Combustion

-3318 kJ/mol

Usage

Photographic restrainer, chemical intermediate.

Vapor Density

4.1

First Aid Measures

Ingestion

Do NOT induce vomiting. 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.

Inhalation

Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear. DO NOT use mouth-to-mouth respiration.

Skin

Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. 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, sparks, and flame. Store in a cool, dry place. Keep from contact with oxidizing materials.

Handling

Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with skin and eyes. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation. Wash clothing before reuse.

Hazards Identification

Inhalation

May cause respiratory tract irritation. May be harmful if inhaled. May cause central, peripheral, and autonomic nervous system effects.

Skin

Causes skin irritation.

Eyes

Causes eye irritation.

Ingestion

May cause irritation of the digestive tract. Moderately toxic to humans by ingestion. May be harmful if swallowed. May cause central, peripheral, and autonomic nervous system effects.

EC Risk Phrase

R 20/21/22 36/37/38 40 52

EC Safety Phrase

S 22 26 36/37/39

UN (DOT)

2811

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 gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.

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.

Exposure Effects

Effects may be delayed.

Poison Class

4

Fire Fighting Measures

Flash Point

186

Autoignition

400

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 water spray to keep fire-exposed containers cool. This material in sufficient quantity and reduced particle size is capable of creating a dust explosion. Containers may explode when heated. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam.

Accidental Release Measures

Small spills/leaks

Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Remove all sources of ignition. Provide ventilation.

Stability and Reactivity

Stability

Stable under normal shipping and handling conditions. However, may decompose if heated.

Incompatibilities

Strong oxidizing agents.

Decomposition

Nitrogen oxides, carbon monoxide, carbon dioxide.

Transport Information

UN Number

2811

HS Code

2933 99 90