1,2-dihydro-5-nitro-3H-1,2,4-triazol-3-one Property

Boiling point:

240.69°C (rough estimate)

Density 

1.9[at 20℃]

vapor pressure 

0Pa at 25℃

refractive index 

1.4164 (estimate)

solubility 

16.8g/L in organic solvents at 20 ℃

pka

3.76[at 20 ℃]

Water Solubility 

17.2g/L at 25℃

LogP

-1.699 at 22℃

CAS DataBase Reference

932-64-9

EPA Substance Registry System

3-Nitro-1,2,4-triazol-5-one (932-64-9)

Safety

RIDADR 

0490

HazardClass 

1.1D

Hazardous Substances Data

932-64-9(Hazardous Substances Data)

Toxicity

LD50 orl-rat: >5 g/kg NTIS** DE86-003296

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H201Explosive; mass explosion hazard

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P230Keep wetted with …

P240Ground/bond container and receiving equipment.

P250Do not subject to grinding/shock/…/friction.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P321Specific treatment (see … on this label).

P332+P313IF SKIN irritation occurs: Get medical advice/attention.

P362Take off contaminated clothing and wash before reuse.

P370+P380in case of fire: Evacuate area.

P372Explosion risk in case of fire.

P373DO NOT fight fire when fire reaches explosives.

P401Store …

P501Dispose of contents/container to..…

1,2-dihydro-5-nitro-3H-1,2,4-triazol-3-one Chemical Properties,Usage,Production

General Description

A solid or liquid. May explode under prolonged exposure to heat or fire. Primary hazard is blast of an instantaneous explosion, not flying projectiles or fragments.

Air & Water Reactions

Dust may form an explosive mixture in air.

Reactivity Profile

The triazoles are a group of highly explosive materials that are sensitive to heat, friction, and impact. Sensitivity varies with the type substitution to the triazole ring. Metal chelated and halogen substitution of the triazol ring make for a particularly heat sensitive material. Azido and nitro derivatives have been employed as high explosives. No matter the derivative these materials should be treated as explosives.

Health Hazard

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

Fire Hazard

MAY EXPLODE AND THROW FRAGMENTS 1600 meters (1 MILE) OR MORE IF FIRE REACHES CARGO.

Safety Profile

Low toxicity by ingestion and skin contact. A skin and eye irritant. An unstable explosive. When heated to decomposition it emits toxic vapors of NOx.