Dibenz-(b,f)-1,4-oxazephine Chemical Properties

Melting point:

68-69 °C

Boiling point:

331.88°C (rough estimate)

Density 

1.1266 (rough estimate)

refractive index 

1.6060 (estimate)

pka

0.50±0.70(Predicted)

EPA Substance Registry System

Dibenz[b,f][1,4]oxazepine (257-07-8)

Safety Information

Hazardous Substances Data

257-07-8(Hazardous Substances Data)

Dibenz-(b,f)-1,4-oxazephine Usage And Synthesis

Description

Agent CR, dibenz-(b,f)-1,4-oxazepine, is a pale-yellow, crystalline solid, which has a melting point of 163°F (72°C). It has a pepper-like odor and is only used in solution for dissemination in liquid dispensers. Solutions consist of 0.1% of CR in 80 parts of propylene glycol and 20 parts water. CR is an eye irritant in organic solutions at concentrations of 0.0025% or lower. Agent CR is less toxic when inhaled, but has more profound skin effects, which are longer lasting. It is a persistent agent when released in the environment and deposited on clothing.

General Description

Colorless liquid, odorless to fruity.

Reactivity Profile

As an amine, Dibenz-(b,f)-1,4-oxazephine probably behaves less as a base than other aliphatic amines as due to Dibenz-(b,f)-1,4-oxazephine cyclic structure. However Dibenz-(b,f)-1,4-oxazephine will react as a weak base.

Health Hazard

Median incapacitating dose: 0.15. Eye/skin toxicity: Highly irritating; not toxic. Rate of action: Instantaneous. Physiological action: Irritates skin, eyes, nose, and throat. Detoxification rate: Moderate. (ANSER)

Safety Profile

Poison by intraperitoneal and intravenous routes. Moderately toxic by ingestion and inhalation. Experimental teratogenic and reproductive effects. A human skin and eye irritant. Questionable carcinogen with experimental carcinogenic and tumorigenic data. When heated to decomposition it emits toxic fumes of NOx.

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