Product Identification

Product Name

1H-1,2,4-Triazole-3,5-diamine

Synonyms

1H-1,2,4-Triazole-3,5-diamine
3,5-Diamino-1,2,4-triazole
3,5-Diamino-1H-1,2,4-triazole
3,5-Diamino-S-triazole
NSC 1895

CAS

1455-77-2

Formula

C2H5N5

Molecular Weight

99.1

EINECS

215-937-2

RTECS

XZ4535000

RTECS Class

Tumorigen; Drug; Mutagen; Human Data

Beilstein/Gmelin

112467

Beilstein Reference

4-26-00-01161

Physical and Chemical Properties

Appearance

Colorless crystals.

Solubility in water

Very soluble

Melting Point

205

Boiling Point

425

pKa/pKb

7.95 (pKb)

Partition Coefficient

-.43

First Aid Measures

Ingestion

Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or 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

Immediately 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. Keep container closed when not in use.

Handling

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.

Hazards Identification

Ingestion

See inhalation.

Inhalation

This chemical is stable under normal laboratory conditions.

Skin

See inhalation.

Eyes

See inhalation

EC Safety Phrase

S 22 24/25

Exposure Controls/Personal Protection

Personal Protection

Eyes: Wear safety glasses and chemical goggles if splashing is possible. Skin: Wear appropriate protective gloves and clothing to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.

Respirators

Wear a NIOSH/MSHA or European Standard EN 149 approved full-facepiece airline respirator in the positive pressure mode with emergency escape provisions.

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. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam.

Fire Potential

This material is probably combustible.

Accidental Release Measures

Small spills/leaks

Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal.

Stability and Reactivity

Incompatibilities

Sensitive to heat, friction, and impact.

Stability

Stable under normal temperatures and pressures.

Decomposition

Nitrogen oxides, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, nitrogen.

Transport Information

HS Code

2933 99 90