Product Identification

Product Name

1,2,4-1H-Triazole

Synonyms

1H-1,2,4-Triazole
Pyrrodiazole
s-Triazole

CAS

288-88-0

Formula

C2H3N3

Molecular Weight

69.069999999999993

EINECS

206-022-9

RTECS

XZ3806000

RTECS Class

Drug; Primary Irritant

Merck

12,9735

Beilstein/Gmelin

104767

Beilstein Reference

5-26-01-00082

EC Index Number

613-111-00-X

EC Class

Toxic for reproduction Category 3; Harmful; Irritant

Physical and Chemical Properties

Appearance

Pale yellow crstals with a characteristic odor.

Solubility in water

1250 g/L

Melting Point

116 - 119

Boiling Point

260

Vapor Pressure

0.02 (25 C)

Density

1.394 g/cm3 (25 C)

pKa/pKb

10.18 (pKa)

Partition Coefficient

-1.2

Heat Of Vaporization

47.8 kJ/mol

Heat Of Combustion

-1322 kJ/mol

Usage

Used to produce antifungals.

First Aid Measures

Ingestion

Get medical aid. Wash mouth out with water.

Inhalation

Remove from exposure to fresh air immediately.

Skin

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

Eyes

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

Handling and Storage

Storage

Store in a cool, dry place. Store in a tightly closed container.

Handling

Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes.

Hazards Identification

Ingestion

Harmful if swallowed. May cause irritation of the digestive tract.

Inhalation

May cause respiratory tract irritation. May be harmful if inhaled.

Skin

May be harmful if absorbed through the skin.

Eyes

Causes eye irritation.

EC Risk Phrase

R 22 36 63

EC Safety Phrase

S 36/37

Exposure Controls/Personal Protection

Personal Protection

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

140

Autoignition

490

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

Vacuum or sweep up material and place into a suitable disposal container.

Stability and Reactivity

Disposal Code

3

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents.

Decomposition

Hydrogen cyanide, nitrogen oxides, carbon monoxide, carbon dioxide, ammonia.

Transport Information

HS Code

2933 99 90