Gases - Nitrogen Dioxide

Question 1

What is the Chemical Symbol for Nitrogen Dioxide?

Answer 1

NO2

Question 2

What is the Specific Gravity of Nitrogen Dioxide?

Answer 2

1.6

Question 3

What are the Characteristics of Nitrogen Dioxide?

Answer 3

Reddish-Brown in Colour
Acrid Smell and
Acidic taste

Question 4

Legal limits for Nitrogen Dioxide?

Answer 4

LTEL - 3ppm MEL - 5ppm

Question 5

What effect does Nitrogen Dioxide have on a person?

Answer 5

Highly toxic, irritant to the lungs and air passages

Question 6

Effects on persons at 0.04-5ppm?

Answer 6

Odour detectable but varies from person to person

Question 7

Effects on persons at 10-20ppm?

Answer 7

Irritating to eyes, nose, upper respiratory tract

Question 8

Effects on persons at 80ppm

Answer 8

Tightness of chest, symptoms of acute Bronchi - pneumonia develops several hours after exposure

Question 9

Effects on persons at >100ppm

Answer 9

Lethal

Question 10

Is Nitrogen Dioxide Combustible?

Answer 10

No - Incombustible

Question 11

Flammable Limits for Nitrogen Dioxide?

Answer 11

Non-Flammable

Question 12

Detection of Nitrogen Dioxide?

Answer 12

Electrochemical sensor, detector tubes, and human senses

Question 13

Nitrogen Dioxide - where found in a mine?

Answer 13

After Shot-firing and diesel engines