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Naphthalene's minimum odor threshold is 0.084 ppm for humans. [42] Mothballs and other products containing naphthalene have been banned within the EU since 2008. [43] [44] In China, the use of naphthalene in mothballs is forbidden. [45] Danger to human health and the common use of natural camphor are cited as reasons for the ban.
Toxic Odor. As you take in this scent, you might not realize that you’re also breathing in toxic chemicals. Mothballs are effective because their active ingredients, either naphthalene or dichlorobenzene, vaporize at room temperature. The chemicals you’re breathing in are the same that kill the pests you want to get rid of.
Naphthalene concentrations up to 970 μg/m 3 were found in homes having an objectionable smell, where a damp-proof membrane had been applied, compared with less than 300 μg/m 3 for control homes . Rubber flooring may also emit naphthalene in odorous amounts.
When you smell mothballs, you are inhaling the pesticide. Small children and pets are at risk of eating mothballs, because they look like candy or other treats. What are some signs and symptoms from a brief exposure to naphthalene? People have developed headaches, nausea, dizziness, and/or vomiting after being exposed to naphthalene vapors.
Naphthalene is a white, crystalline solid that is flammable and smells strongly of mothballs. Uses of naphthalene. Naphthalene is the most abundant component of coal tar, which is the liquid...
Generally, naphthalene odor was described as intense and unpleasant. Habituation effects or olfactory fatigue were not observed. Endoscopic examination revealed mild inflammatory effects at the nasal mucosa of exposed employees in terms of reddening and swelling and abnormal mucus production.
Some moth balls and toilet deodorant cakes contain a substance called naphthalene. Naphthalene is a solid, white material with a distinctive odour, and it is found naturally in fossil fuels like coal and oil.
Naphthalene mothballs, and the odor they produce, remains in the environment of use longer than Paradichlorobenzene mothballs. That is, it will take longer for the Naphthalene odor to dissipate even when the mothball source has disappeared consumed or been removed.
Exposure to naphthalene, 1-methyl-naphthalene, or 2-methylnaphthalene can occur from breathing in tobacco smoke or from mothballs. You may experience breathing and/or neurological problems if exposed. Health effects may happen at air levels that you can’t smell.
Acute Effects: Acute exposure of humans to naphthalene by inhalation, ingestion, and dermal contact is associated with hemolytic anemia, damage to the liver, and, in infants, neurological damage.