Question

The ignition temperature of white phosphorus is 35 degree . What will happen if it is kept in a room in summer when the temperature rises to 35 degrees and how it is different from other types of combustion

Answer 1

Naphthalene is a white, volatile, solid polycyclic hydrocarbon with a strong mothball odor. Naphthalene is obtained from either coal tar or petroleum distillation and is primarily used to manufacture phthalic anhydride, but is also used in moth repellents. Exposure to naphthalene is associated with hemolytic anemia, damage to the liver and neurological system, cataracts and retinal hemorrhage. Naphthalene is reasonably anticipated to be a human carcinogen and may be associated with an increased risk of developing laryngeal and colorectal cancer. (NCI05)

Pharmacology from NCIt

Naphthalene is found in black walnut. Naphthalene is found in many essential oils. Naphthalene is an organic compound with formula C10H8. It is a white crystalline solid with a characteristic odor that is detectable at concentrations as low as 0. 08 ppm by mass. Trace amounts of naphthalene are produced by magnolias and specific types of deer, as well as the Formosan subterranean termite. Some strains of the endophytic fungus Muscodor albus produce naphthalene among a range of volatile organic compounds, while Muscodor vitigenus produces naphthalene almost exclusively (Wikipedia

Metabolite Description from Human Metabolome Database (HMDB)

Naphthalene is used in the production of phthalic anhydride; it is also used in mothballs. Acute (short-term) exposure of humans to naphthalene by inhalation, ingestion, and dermal contact is associated with hemolytic anemia, damage to the liver, and neurological damage. Cataracts have also been reported in workers acutely exposed to naphthalene by inhalation and ingestion. Chronic (long-term) exposure of workers and rodents to naphthalene has been reported to cause cataracts and damage to the retina. Hemolytic anemia has been reported in infants born to mothers who "sniffed" and ingested naphthalene (as mothballs) during pregnancy. Available data are inadequate to establish a causal relationship between exposure to naphthaleneand cancer in humans. EPA has classified naphthaleneas a Group C, possible human carcinogen.

Answer 2

Explanation:

An ignition temperature is defined as lowest temperature at which combustible substance starts burning(catches fire) in the presence of air without any help of external sources.

The ignition temperature of white phosphorus is 35 degree. When in summers temperature rises to 35° Celsius the phosphorus kept in this environment will result in burning phosphorus with flame.

This combustion is different from other types of combustion because here no external source is used to ignite the phosphorus. Phosphorus itself starts burning above the 35° Celsius. Energy provided to phosphorus to burn (combustion) is due to increase in temperature.