化合物详情

Atmospheric Lifetime = 740 years

Nitrogen trifluoride does not occur naturally in the environment(1).

Unlike many other greenhouse gases, fluorinated gases /such as nitrogen trifluoride/ have no natural sources and only come from human-related activities. They are emitted through a variety of industrial processes such as aluminum and semiconductor manufacturing. ... Like other long-lived greenhouse gases, fluorinated gases are well-mixed in the atmosphere, spreading around the world after they're emitted. Fluorinated gases are removed from the atmosphere only when they are destroyed by sunlight in the far upper atmosphere. In general, fluorinated gases are the most potent and longest lasting type of greenhouse gases emitted by human activities(1).

NIOSH (NOES Survey 1981-1983) has statistically estimated that 1,096 workers (140 of these are female) were potentially exposed to nitrogen trifluoride in the US(1). Occupational exposure to nitrogen trifluoride may occur through inhalation and dermal contact with this compound at workplaces where nitrogen trifluoride is produced or used. (SRC)

In Animals: anoxia, cyanosis; methemoglobinemia; lassitude (weakness, exhaustion), dizziness, headache; liver, kidney injury

Blood, liver, kidneys

LC50 (rat) = 6,700 ppm/1H

Methemoglobinemia - The presence of increased methemoglobin in the blood; the compound is classified as secondary toxic effect

inhalation

IDENTIFICATION AND USE: Nitrogen trifluoride is a colorless gas with a moldy odor. It is used as a chamber-cleaning gas in the manufacture of electronics. Nitrogen trifluoride is preferred to F2 in high-power chemical lasers because of its ease of handling at ambient temperatures. It is also an oxidizer for high-energy fuels, chemical synthesis. HUMAN EXPOSURE AND TOXICITY: Nitrogen trifluoride is a simple asphyxiant. Five volunteers were exposed to nitrogen trifluoride at concentrations of 100 and 500 ppm for 2 to 3 minutes. No odor was detected at 100 ppm, but one of the five reported the odor detectable at 500 ppm. ANIMAL STUDIES: Nitrogen trifluoride has a moderate acute inhalation toxicity causing anoxic deaths due to methemoglobinemia. Acute inhalation also results in slight histo...

LC50 Monkey inhalation 7500 ppm/1hr

Persons with blood disorders may be at increased risk from exposure.