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Topic: Napthalene

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In the News (Wed 20 Jun 18)

  Probert Encyclopaedia: Science & Technology (N-Nd)   (Site not responding. Last check: 2007-10-16)
It is either lead antimonate or a similar pigment consisting of a mixture of zinc oxide with yellow colouring matter.
Napthalene is a white solid hydrocarbon with a strong smell; is also called mothballs, moth flakes, white tar, and tar camphor.
Napthol exists in two varieties, alpha and beta, which are the mono-hydroxy derivatives of napthalene.
www.probertencyclopaedia.com /SN.HTM   (1701 words)

 Lab 2 Procedure
Apply a drop or two of Napthalene Bromide (supplied with the instrument) to the polished face of the Refracting Prism.
Lay the polished face of the standard sample on the refracting prism surface, with the Napthalene bromide acting as a "glue" to ensure proper contact between the sample and the prism face.
Adjust the dispersion, using the Dispersion Correction Knob, until a clear light/dark boundary is seen.
physics.usask.ca /~angie/ep421/lab2/procedure.htm   (746 words)

 Cleveland Seniors | mothball | Mugridge
Anyway, the napthalene would be a safer material to handle, but I don't know how much of it might leach into the soil and/or make it toxic.
When put on soil, it is absorbed moderately and biodegrades, but may end in groundwater if the concentration is high enough (like a large spill, probably not from just a few mothballs laying on the ground).
I would guess that the napthalene from the mothballs would probably biodegrade within a few days, but I think we should reserve this question for any chemists in our audience.
www.clevelandseniors.com /home/tommothball.htm   (218 words)

 Week 6
Napthalene is well absorbed following oral, dermal or inhalation exposure; napthalene is very lipid soluble.
This is the "double edged sword of naphthalene poisoning." Thus, reversal of napthalene poisoning may be slow and ugly.
As onset of toxic effects is fast, you may see "remnants" of the mothballs when the child is induced to vomit, even though the absorption of the napthalene is rapid.
faculty.etsu.edu /currie/week8a.htm   (1933 words)

 [No title]
The second type of mixture uses chemicals such as ammonium chloride, napthalene, or anthracene which are vaporized without decomposition.
When using mixtures containing a hydrocarbon such as napthalene, care must be taken that the hot vapor does not catch fire when it hits the open air.
Also volatile chemicals such as napthalene oe hexachloroethane can sublimate from these mixtures so they must be sealed airtight.
www.textfiles.com /anarchy/INCENDIARIES/smokes.txt   (914 words)

 Patent 4745045: Method for improving resolution in microelectronic circuits using photoresist overlayer by using ...
Therefore, it would be obvious to one skilled in the art that the photoactive compound, without the novolak resin and solvents, could be mixed with the polyimide in an alternate embodiment.
Preferably, the photoactive compound is a 2-diazo-1 oxo napthalene, or a 1-diazo-2 oxo napthalene, which may contain a sulfonic acid group or an ester of sulfonic acid at the 4 or 5 positions on the napthalene ring.
Generally, the diazo-oxo napthalenes are added to esterify an acid molecule.
www.freepatentsonline.com /4745045.html   (2919 words)

 Eclipse Paper Conservation Articles   (Site not responding. Last check: 2007-10-16)
The vapour that is being produced is probably a derivative of napthalene - a benzene based aromatic compound used in moth balls, and coincidentally a solvent used by comic book restorers to remove tape residue and grease stains from comic books.
The bad news is, napthalene's long term effects on lignin and ground wood pulp have not yet been determined.
Another feasible reason for cedar's perseverance as a storage tool was the observation by collector's that comics stored within the box seemed to be as white as the day they were placed inside.
www.eclipsepaper.com /c5.htm   (371 words)

They argue from this that any conclusion that they were responsible for the death of plaintiffs' cattle from chlorinated napthalene poisoning can only be based upon speculation, or upon an inference upon an inference, rather than upon facts necessary to establish causal connection.
It was not possible to obtain an analysis of the particular pellets manufactured by defendants, and purchased by plaintiffs, for the evidence shows that by the time plaintiffs' cattle's ailment had been definitely diagnosed, all of said pellets had been consumed.
The testimony indicated that the chlorinated napthalene from the grease vaporizes and is absorbed by the cotton seed meal covering the rollers.
www.oscn.net /applications/oscn/deliverdocument.asp?citeid=26433   (3261 words)

 EPA Region 9 Complaint and Notice of Opportunity for Hearing (September 24, 2001) -- In Re: Hing Mau, Inc., Respondent   (Site not responding. Last check: 2007-10-16)
Napthalene No. 108 is a “pesticide,” as that term is defined by Section 2(u) of FIFRA [7 U.S.C. §136(u)].
Refined Napthalene is a “pesticide” as that term is defined by Section 2(u) of FIFRA [7 U.S.C. §136(u)].
At the time when Respondent distributed or sold the pesticide Refined Napthalene, Refined Napthalene was not registered with the Administrator under Section 3 of FIFRA.
www.pestlaw.com /x/enforce/E09-20010924A.html   (1406 words)

 EMedHome.com   (Site not responding. Last check: 2007-10-16)
Mothball ingestion may be seen by the emergency physician in either an accidental setting - usually pediatric - or in the setting of substance abuse(1).
Differentiation between the two types of mothballs is difficult because they have similar odors and are both white, crystalline solids at room temperatures.
The differentiation, however, is important since napthalene has the potential to be quite toxic whereas PDB has a low order of toxicity and is generally considered non-toxic in the setting of an acute exposure.
www.emedhome.com /features_printfriendly.cfm?FID=236   (262 words)

 Re: squirrel repellant   (Site not responding. Last check: 2007-10-16)
A squirrel repellant recommended contains napthalene and gypsum.
Napthalene flakes are available as "moth flakes" which I did find at Walgreens.
What you don't want is any moth flakes that contain paradichlorobenzene.
www.raingardens.com /forum/messages/497.html   (426 words)

 Shree Group of Companies   (Site not responding. Last check: 2007-10-16)
Refined Napthalene is used in dyes and pharmaceutical
Napthalene balls are used as pest control and insect repallent.
Mr.Harshad Shah, MD, is the man behind the Shree Group of companies having 22 years of rich experience.
www.indiaspace.com /shree/syv.htm   (36 words)

 Wyoming Seminary Chemistry - Determination of K for Lauric Acid   (Site not responding. Last check: 2007-10-16)
(the plateau of the above graph) of lauric acid, weigh out the given amount of solute (napthalene) as indicated by the instructor.
Calculate change in freezing point of the pure lauric acid and of your solution of napthalene in lauric acid.
Knowing the change in freezing point and the molality of the solution, calculate the kf for lauric acid.
www.wyomingseminary.org /current_students/chemistry/winter_labs/w_lab_kf_lauricacid.html   (350 words)

 Moth Ball Crystals   (Site not responding. Last check: 2007-10-16)
Once they were all liquid, he placed them on a petri dish.
I have looked for moth balls that have that chemical and all I can find are the moth balls that contain Napthalene and it says that it can be fatal if inhaled.
You are right, Napthalene would not be a good choice.
www.newton.dep.anl.gov /askasci/env99/env129.htm   (343 words)

 102 Lab 2
To do this, you will first determine the boiling point of the solvent and then the boiling points of two, different solutions of napthalene.
You will have to weigh the napthalene and either weigh the solvent or measure its volume.
You should note that all of the solvents are volitile and that their boiling points depend upon atmospheric pressure.
capital2.capital.edu /faculty/wbecktel/102L2.html   (380 words)

 [No title]
Wester's II New Riverside Dictionary doesn't list napthalene (a word in common usage when I grew up), but it does list "moth balls" and suggests that they are made of camphor.
Webster's is about the most useless dictionary I have around (they flood the market with their little book and make it cheap enough so that they are found everywhere (unfortunately)).
As to dictionaries, nothing, but nothing, beats the O.E.D. What this all means is the the moth balls have dissolved themselves into the plastic parts of your car's interior, including the rubber backing of your carpet and right into the seats' spongy interior.
www.ibiblio.org /pub/academic/medicine/alternative-healthcare/general/mothballs   (781 words)

 Reseach Projects: Quantification and Assessment of Dermal Exposure to Benzene and Napthalene Using a Noninvasive ...   (Site not responding. Last check: 2007-10-16)
Quantification and Assessment of Dermal Exposure to Benzene and Napthalene Using a Noninvasive Sampling of Skin
Leena Nylander-French, PI This project is focused on measuring skin exposure to benzene and naphthalene, two chemicals often found at Superfund sites.
The procedures and methods developed in this study should also be useful for determining skin exposure to other harmful environmental contaminants.
www.sph.unc.edu /sfcoep/research/lproject8.htm   (278 words)

 Does the gas emitted from napthalene interfere with human gas exchange?
Does the gas emitted from napthalene interfere with human gas exchange?
I understand that napthalene repells female moths from laying eggs, and can kill the larvae, but I find it quite noxious myself, and was wondering if there was some harm caused when I breath in the fumes?
Re: Does the gas emitted from napthalene interfere with human gas exchange?
www.madsci.org /posts/archives/aug2000/965330304.Bc.q.html   (104 words)

 CHEM 105 Quiz 3 Fall97 - Simpson   (Site not responding. Last check: 2007-10-16)
Please write clearly and succinctly in your answers to these questions.
1) (2 pts) You attempt to make a solution of napthalene (one resonance form shown below) in water by adding 5 g of napthalene to 100 g of water.
After waiting a long time, crystals still remain in the bottom of the container.
www.uaf.edu /chem/105f9701/quiz12.html   (257 words)

 Clariant India- - Product Range2   (Site not responding. Last check: 2007-10-16)
Distan NS powder is a naphthalene based neutralising tanning agent.
A powder syntan based on Chromium - containing condensation product of napthalene sulphonic acids.
Distan CSS Powder is a mineral tanning agent based on chromium-containing condensation product of naphthalene acids.
www.clariant.de /e2wportal/in/internet.nsf/vwWebSpider/9AD779ABCDE8B17065256B45004B6D16   (179 words)

 Chemical process engineering - napthalene
Can you overheat napthalene and thus burn it or degrade it?
Let me explain further, we are going to store napthalene in a stoarge tank and use steam to keep it warm.
Can I get the napthalene too hot and thus degrade the product?
www.eng-tips.com /viewthread.cfm?qid=66085   (287 words)

Napthalene is well absorbed following oral, dermal or inhalation exposure (it is very lipid soluble!).
Thus, reversal of napthalene poisoning may be slow and ugly.
Like they say, "Kids do the darndest things."
faculty.etsu.edu /currie/CO.htm   (1726 words)

 Need M100, Fuel oil 180, Napthalene, Crude Oil, Jet Fuel Importer   (Site not responding. Last check: 2007-10-16)
Need M100, Fuel oil 180, Napthalene, Crude Oil, Jet Fuel Importer
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Need M100, Fuel oil 180, Napthalene, Crude Oil, Jet Fuel
www.trade-india.com /TradeLeads/buy/lead_details.html?lead_id=571915   (250 words)

 (TechInfo) NAPTHALENE CANCER STUDIES FAIL TO FIND DEFINITE LINK   (Site not responding. Last check: 2007-10-16)
Toxicology and carcinogenesis studies of napthalene in mice.
This citation is from the TechInfo Database maintained by the Illinois Waste Management and Research Center (WMRC) at the University of Illinois with funding from the USEPA Region V.
es.epa.gov /p2pubs/techpubs/9/12379.html   (54 words)

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