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Toxipedia: N

naphtha

See Petroleum Distillate.

Neogreene

Neogreene is the green version of neoprene. Instead of being made using the chloroprene chemistry of neoprene, it is made with a water based chemistry that allows for water based adhesives that still provides the squishy and smooth material with a little bit of stretch. Neogreene contains no phthalates, VOCs, chlorine, nor metals that are traditionally comprised in neoprene. Neoprene is also vulcanized in production while neogreene is not. Neogreene can, at the raw material level, be reformed and reused.

Neoprene

Neoprene (or polychloroprene) is a family of synthetic rubbers that are produced by polymerization of chloroprene. It is used in a wide variety of applications, such as in wetsuits, laptop sleeves, orthopedic braces, electrical insulation, and even car fan belts. Neoprene is also known for its toxic smell. Although neoprene itself is not a skin contact sensitizer, certain neoprene adhesives contain 4% rosin (CAS No. 8050-09-7, previously known as "colophony"), which is a skin contact sensitizer under the European Union Dangerous Preparations Directive 1999/45/EC. Lead-containing compounds, such as litharge (lead(II) oxide), are used as compounding agents to prepare finished products made of neoprene, and these can have a toxic effect on human blood, kidneys, and reproductive systems.

neurotoxin

A poisonous complex especially of protein that acts on the nervous system .

NiCad

Most rechargeable batteries available are nickel-cadmium or NiCad batteries. They are most often used in consumer electronic devices such as cellular phones, camcorders, and power tools. The more common alkaline batteries are not rechargeable and account for more than 50% of the mercury in landfills.NiCad batteries are also recyclable, though not enough people are aware of the fact. More than 50% of the cadmium in the U.S. waste stream comes from discarded NiCad batteries. Most major consumer electronic retailers will accept and recycle used NiCad batteries free of charge.

nitrocresolic herbicides

nitrogen dioxide

nitrophenolic herbicides

nitrous oxide

Nitrous oxide, or laughing gas, is an anesthetic that can possibly cause brain damage in very high doses. In medical use, patients are rarely given high concentrations of nitrous oxide, since anesthesiologists generally combine it with other gases.