Exposure to naphthalene is associated with hemolytic anemia, damage to the liver and neurological system, cataracts and retinal hemorrhage. It is also produced when things burn, so naphthalene is found in cigarette smoke, car exhaust, and smoke from forest fires.
It is used as an insecticide and pest repellent. See full list on npic. Always follow label instructions and take steps to avoid exposure. If any exposures occur, be sure to follow the First Aid instructions on the product label carefully.
You can be exposed to a pesticide if you breathe it in, get it on your skin, or if you accidentally eat or drink something containing a pesticide. People are most likely to be exposed to naphthalene by breathing in the vapors.
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. In humans, naphthalene is broken down to alpha-naphthol, which is linked to the development of hemolytic anemia. Kidney and liver damage may also occur.
Alpha-naphthol and other metabolites are excreted in urine. Animal studies have suggested that naphthalene can cause cancer. The International Agency for Research on Cancer (IARC) of the World Health Organization (WHO) concluded that naphthalene is possibly carcinogenic to humans. EPA classified naphthalene as a possible human carcinogen, also based on animal studies.
Rats fed naphthalene while pregnant did not gain weight as quickly. In humans, women who ate naphthalene mothballs or inhaled the vapors while pregnant gave birth to babies with hemolytic anemia. No information was found on naphthalene and asthma or other chronic diseases.
While children may be especially sensitive to pesticides compared to adults, there are currently no data showing that children have increased sensitivity specifically to naphthalene. However, small children are at greatest danger from eating stray mothballs, because they may look like candy. Most naphthalene in the environment will turn into a gas. Some of it may be bound to soil, where it can be taken up by plants.
It can also be deposited on plant leaves from the air. The half-life of naphthalene in the environment may range from less than one day in air to over days in soil. Naphthalene has been found in wastewater treatment plant discharge. It was considered slightly toxic to green algae.
It is an important hydrocarbon raw material that gives rise to a host of substitution products used in the manufacture of dyestuffs and synthetic resins. It was used as fluorescent probe to study the aggregation behavior of sodium cholate.
Define naphthalene. English dictionary definition of naphthalene. A white crystalline aromatic compoun C10H derived from coal tar or petroleum and used in manufacturing dyes, moth.
Perdeuterated naphthalene. Searchfor naphthalene at Sigma-Aldrich. It is produced from coal tar fraction by crystallization and distillation. It is often used as dispersants in natural and synthetic rubbers, in the production of naphthalene sulfonate superplasticizers for concrete, in paints, tanning agents in the leather industry, in the production of the.
Uses of naphthalene. An additional experiment carried out with very low catalyst loading led to a low naphthalene conversion and only tetralin as product. 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.
It is the simplest polycyclic aromatic hydrocarbon, and is a white crystalline solid with a characteristic odor that is detectable at concentrations as low as 0. It is one of two mono sulfonic acids of naphthalene, the other being the more stable naphthalene -2-sulfonic acid. L dissolved naphthalene.
In a sealed container containing naphthalene pellets, naphthalene vapors build up to levels toxic to both the adult and larval forms of many moths that attack textiles. Perhaps one of the most offensive odors known to man (and moth) comes from naphthalene.
It is often used in the long term storage of clothes to prevent pests from invading, as pests avoid the strong odor of the chemical. Below is a drawing of the naphthalene molecule.
Erlenmeyer showed that the naphthalene molecule consists of two benzene molecules joined to each other. NAPHTHALENE International Programme on Chemical Safety Poisons Information Monograph 3Chemical 1. It can be used as a chemical intermediate, mainly used as a precursor to other chemicals. The single largest use of naphthalene is the industrial production of phthalic anhydride, although more phthalic anhydride is made from o-xylene.
Why is naphthalene soluble in benzene? Because, organic compound like benzene and naphthalene are nonpolar but CsF is polar so naphthalene would be more soluble in benzene since both are nonpolar 12.
The main intake route of naphthalene at the workplace is the respiratory tract.
