Naphthalene F A Q

What is naphthalene? 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. As an aromatic hydrocarbon, naphthalene’s structure consists of a fused pair of benzene rings. It is best known as the traditional ingredient(s) of mothballs. (The other is para-dichlorobenzene). more about naphthalene


Who discover naphthalene?

In 1819–1820, at least two chemists reported a white solid with a pungent odor derived from the distillation of coal tar. In 1821, John Kidd described many of this substance’s properties and the means of its production, and proposed the name naphthaline, as it had been derived from a kind of naphtha (a broad term encompassing any volatile, flammable liquid hydrocarbon mixture, including coal tar). Naphthaline’s chemical formula was determined by Michael Faraday in 1826. The structure of two fused benzene rings was proposed by Emil Erlenmeyer in 1866, and confirmed by Carl Gräbe three years later.


What is the formula for naphthalene?

Naphthalene, also known as naphthalin, bicyclo[4.4.0]deca-1,3,5,7,9-pentene or antimite and not to be confused with naphtha, is a crystalline, aromatic, white, solid hydrocarbon with formula C10H8and the structure of two fused benzene rings. It is best known as the traditional, primary ingredient of mothballs. It is volatile, forming a flammable vapor, and readily sublimes at room temperature, producing a characteristic odor that is detectable at concentrations as low as 0.08 ppm by mass.


What is naphthalene used for?

Naphthalene is most commonly used to make mothballs for House hold applications and Pest control in Closets or against Rodents,Insects, etc. Naphthalene can be reacted with other chemicals like Sulphuric acid, polymerization agents, Caustic Soda, etc for many other applications eg. Pharmaceutical intermediates, Dyestuffs (colorants for textiles, etc), Concrete applications as water reducer (Rheology improver), Pesticides, etc… Read more about naphthalene application


Why does Naphthalene melt?

If you take off the top of the bottle of naphthalene and have a smell, you get the strong odour of old fashioned moth balls. Why .. because as you correctly say, it is subliming. However this is not instantaneous. It is a relatively slow process. Yes, if you left the top off the bottle, it would all sublime, but not today or tomorrow … it would take quite a few days. Old fashioned moth balls, that granny put in her drawer to stop the moths eating her wolly cardigans, lasted for weeks or months. When you start heating it is still subliming, but at a faster rate. However, when you reach 80C it will melt pretty rapidly as this is it’s melting point. You get a colourless liquid. Note that the liquid, although not boiling, is still forming naphthalene vapour.


What is the synthesis of naphthalene?

Napthalene may be synthesized chemically by Howarth synthesis or Diel’s Alder approach. This is chemical synthesis starting from say benzene. Otherwise, it may be obtained from crude petroleum etc.


Does naphthalene dissovled in water?

No, naphthalene is a non polar organic solid so insoluble in water.


What is the boiling point of Naphthalene?

The boiling point of Napthalene (C10H8) is 218 °C, 491 K or 424 °F.


What is the freezing point of naphthalene?

79.5 degrees celcius.


Do you sell its naphthalene products worldwide?

Yes, we have sell this product to worldwide.


Whether naphthalene including the DG (Dangerous Goods) or non DG?

Our naphthalene is DG, this is list below for detail.
Hazard Codes : Xn = Harmfull, N = Dangerous for the environment, F = Highly Flammable, T = Toxic
RIDADR : UN 1334 4.1/PG 3
RTECS : QJ0525000
HazardClass : 4.1
PackingGroup : III
HS Code : 29029010


Who should I contact for more information?

For specific inquiries or assistance, feel free to contact us directly. If you are already a naphthalene customer, please contact your sales representative. If you are a new customer, please find an appropriate and contact us.


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