Product Identification

Product Name

2,5-Diaminopyridine

Synonyms

2,5-Diaminopyridine
Pyridine-2,5-diamine

CAS

4318-76-7

Formula

C5H7N3

Molecular Weight

109.15

RTECS

US7555000

Beilstein/Gmelin

108741

Beilstein Reference

5-22-11-00252

Physical and Chemical Properties

Solubility in water

39 g/L (25 C)

Melting Point

110.3

Boiling Point

329

Vapor Pressure

0.0002 (25 C)

Density

1.251 g/cm3 (20 C)

pKa/pKb

7.42 (pKb)

Partition Coefficient

-.47

Heat Of Vaporization

57.15 kJ/mol

First Aid Measures

Ingestion

If swallowed, wash out mouth with water provided person is conscious. Call a physician.

Inhalation

If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen.

Skin

In case of contact, immediately wash skin with soap and copious amounts of water. Remove contaminated clothing and shoes. Call a physician.

Eyes

In case of contact with eyes, flush with copious amounts of water for at least 15 minutes. Assure adequate flushing by separating the eyelids with fingers. Call a physician.

Handling and Storage

Storage

Keep container tightly closed.

Hazards Identification

Ingestion

May be harmful if ingested.

Inhalation

May be harmful if inhaled. Material is irritating to mucous membranes and upper respiratory tract.

Skin

Causes skin irritation. May be harmful if absorbed through the skin.

Eyes

Causes irritation.

Hazards

Emits toxic fumes under fire conditions.

Exposure Controls/Personal Protection

Personal Protection

Compatible chemical-resistant gloves. Chemical safety goggles. Protective clothing.

Respirators

Use respirators and components tested and approved under appropriate government standards such as NIOSH (US) or CEN (EU). Where risk assessment shows air-purifying respirators are appropriate use a dust mask type N95 (US) or type P1 (EN 143) respirator.

Fire Fighting Measures

Flash Point

179

Fire Fighting

Extinguish with water spray, carbon dioxide, dry chemical powder or appropriate foam. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.

Accidental Release Measures

Small spills/leaks

Sweep up, place in a bag and hold for waste disposal. Avoid raising dust. Ventilate area and wash spill site after material pickup is complete.

Stability and Reactivity

Stability

Stable at normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents.

Decomposition

Oxides of carbon, oxides of nitrogen.