Naphthalin Produkt Beschreibung

Naphthalene Struktur
91-20-3
  • CAS-Nr.91-20-3
  • Bezeichnung:Naphthalin
  • Englisch Name:Naphthalene
  • Synonyma:Naphthalin;Naphthen<BR>Steinkohlenteerkampfer
    Naftalen;whitetar;NAPTHALIN;NAPHTHENE;mighty150;mightyrd1;mothballs;White tar;camphortar;NAPTHALENE
  • CBNumber:CB2472212
  • Summenformel:C10H8
  • Molgewicht:128.17052
  • MOL-Datei:91-20-3.mol
Naphthalin physikalisch-chemischer Eigenschaften
  • Schmelzpunkt: :80-82 °C(lit.)
  • Siedepunkt: :218 °C(lit.)
  • Dichte :0.99
  • Dampfdichte :4.4 (vs air)
  • Dampfdruck :0.03 mm Hg ( 25 °C)
  • Brechungsindex :1.5821
  • Flammpunkt: :174 °F
  • storage temp.  : APPROX 4°C
  • Löslichkeit :methanol: soluble50mg/mL, clear, colorless
  • Aggregatzustand :Faint beige to brown to salmon red powder
  • Farbe :White to almost white
  • Wichte :1.145
  • Explosionsgrenze :0.9-5.9%(V)
  • Wasserlöslichkeit :30 mg/L (25 ºC)
  • Merck  :14,6370
  • BRN  :1421310
  • Expositionsgrenzwerte :TLV-TWA 10 ppm (~50 mg/m3) (ACGIH, MSHA, and OSHA); STEL 15 ppm (~75 mg/m3) (ACGIH); IDLH 500 ppm.
  • InChIKey :UFWIBTONFRDIAS-UHFFFAOYSA-N
  • CAS Datenbank :91-20-3(CAS DataBase Reference)
  • NIST chemische Informationen :Naphthalene(91-20-3)
  • EPA chemische Informationen :Naphthalene(91-20-3)
Sicherheit

Naphthalene Chemische Eigenschaften,Einsatz,Produktion Methoden

  • ERSCHEINUNGSBILD WEISSER FESTSTOFF IN VERSCHIEDENEN FORMEN MIT CHARAKTERISTISCHEM GERUCH.
  • PHYSIKALISCHE GEFAHREN Staubexplosion der pulverisierten oder granulierten Substanz in Gemischen mit Luft möglich.
  • CHEMISCHE GEFAHREN Beim Verbrennen Bildung reizender und giftiger Gase. Reagiert mit starken Oxidationsmitteln.
  • ARBEITSPLATZGRENZWERTE TLV: 10 ppm (als TWA); 15 ppm (als STEL); Hautresorption; Krebskategorie A4 (nicht klassifizierbar als krebserzeugend für den Menschen); (ACGIH 2005).
    MAK: Hautresorption; Krebserzeugend Kategorie 2; Keimzellmutagen Kategorie 3B; (DFG 2005).
  • AUFNAHMEWEGE Aufnahme in den Körper durch Inhalation, über die Haut und durch Verschlucken.
  • INHALATIONSGEFAHREN Beim Verdampfen bei 20°C tritt langsam eine gesundheitsschädliche Kontamination der Luft ein. (S. Anm.)
  • WIRKUNGEN BEI KURZZEITEXPOSITION WIRKUNGEN BEI KURZZEITEXPOSITION:
    Möglich sind Auswirkungen auf das Blut mit nachfolgenden Blutzellschädigungen (Hämolyse) (s.Anm.). Die Auswirkungen treten u.U. verzögert ein. Exposition durch Verschlucken kann zum Tod führen. ärztliche Beobachtung notwendig.
  • WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION Möglich sind Auswirkungen auf das Blut mit nachfolgender chronischer hämolytischer Anämie (Blutarmut). Möglich sind Auswirkungen auf die Augen mit nachfolgender Linsentrübung. Möglicherweise krebserzeugend für den Menschen.
  • LECKAGE Persönliche Schutzausrüstung: Atemschutzfilter für organische Gase und Dämpfe. NICHT in die Umwelt gelangen lassen. Verschüttetes Material in abgedeckten Behältern sammeln; falls erforderlich durch Anfeuchten Staubentwicklung verhindern. Reste sorgfältig sammeln. An sicheren Ort bringen.
  • R-Sätze Betriebsanweisung: R22:Gesundheitsschädlich beim Verschlucken.
    R40:Verdacht auf krebserzeugende Wirkung.
    R50/53:Sehr giftig für Wasserorganismen, kann in Gewässern längerfristig schädliche Wirkungen haben.
    R67:Dämpfe können Schläfrigkeit und Benommenheit verursachen.
    R65:Gesundheitsschädlich: kann beim Verschlucken Lungenschäden verursachen.
    R38:Reizt die Haut.
    R11:Leichtentzündlich.
    R39/23/24/25:Giftig: ernste Gefahr irreversiblen Schadens durch Einatmen, Berührung mit der Haut und durch Verschlucken.
    R23/24/25:Giftig beim Einatmen, Verschlucken und Berührung mit der Haut.
    R52/53:Schädlich für Wasserorganismen, kann in Gewässern längerfristig schädliche Wirkungen haben.
  • S-Sätze Betriebsanweisung: S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.
    S46:Bei Verschlucken sofort ärztlichen Rat einholen und Verpackung oder Etikett vorzeigen.
    S60:Dieses Produkt und sein Behälter sind als gefährlicher Abfall zu entsorgen.
    S61:Freisetzung in die Umwelt vermeiden. Besondere Anweisungen einholen/Sicherheitsdatenblatt zu Rate ziehen.
    S62:Bei Verschlucken kein Erbrechen herbeiführen. Sofort ärztlichen Rat einholen und Verpackung oder dieses Etikett vorzeigen.
    S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
    S16:Von Zündquellen fernhalten - Nicht rauchen.
    S7:Behälter dicht geschlossen halten.
  • Aussehen Eigenschaften C10H8; weißer, charakteristisch riechender Feststoff.
  • Gefahren für Mensch und Umwelt Naphthalin verdampft bereits merklich bei Raumtemperatur. Die am Schmelzpunkt entweichenden Dämpfe bilden mit Luft ein zündfähiges Gemisch. Mit starken Oxidationsmitteln (z.B. Chromtrioxid) erfolgen heftige Reaktionen, der Kontakt mit Distickstoffpentoxid führt zur Explosion.
    Dämpfe und Stäube reizen Augen und Atemwege. Einatmen der Dämpfe kann zu Kopfschmerzen und Übelkeit führen. Bei häufigem Kontakt sind Hautentzündungen möglich. Einige Personen sind hypersensitiv gegenüber Naphthalin und reagieren auf geringen Hautkontakt mit schwerer Hautentzündung.
    Wassergefährdendr Stoff (WGK 2).
  • Schutzmaßnahmen und Verhaltensregeln Im Abzug arbeiten.
    Schutzhandschuhe nur als kurzzeitiger Staub- und Spritzschutz.
  • Verhalten im Gefahrfall Nach Verschütten oder Auslaufen erstarren lassen, mechanisch entfernen. Als Sondermüll entsorgen.
    Wasser, Kohlendioxid, Trockenlöschmittel, Schaum.
  • Erste Hilfe Nach Hautkontakt: Mit viel Wasser und Seife abwqaschen. Erstarrte Kruste nur vom Arzt entfernen lassen!
    Nach Augenkontakt: Mit viel Wasser mind. 10 Min. bei geöffnetem Lidspalt spülen. Augenarzt konsultieren.
    Nach Einatmen: Frischluft.
    Nach Verschlucken: Viel Wasser trinken. Erbrechen auslösen. Arzt hizuziehen.
    Nach Kleidungskontakt: Kontaminierte Kleidung sofort ausziehen.
    Ersthelfer: siehe gesonderten Anschlag

  • Sachgerechte Entsorgung Als Sondermüll entsorgen.
  • Beschreibung Naphthalene occurs as transparent prismatic plates also available as white scales, powder balls, or cakes with a characteristic mothball or strong coal tar and aromatic odour. It is sparingly soluble in water but soluble in methanol/ethanol and very soluble in ether. Naphthalene is a commercially important aromatic hydrocarbon. Naphthalene occurs as a white solid or powder. Naphthalene occurs in coal tar in large quantities and is easily isolated from this source in pure condition. It volatilises and sublimes at room temperature above the melting point. The primary use for naphthalene is in the production of phthalic anhydride, also of carbamate insecticides, surface active agents and resins, as a dye intermediate, as a synthetic tanning agent, as a moth repellent, and in miscellaneous organic chemicals. Naphthalene is used in the production of phthalic anhydride; it is also used in mothballs. Naphthalene is also used in the manufacture of phthalic and anthranilic acids to make indigo, indanthrene, and triphenyl methane dyes, for synthetic resins, lubricant, celluloid, lampblack, smokeless powder, and hydronaphthalenes. Naphthalene is also used in dusting powders, lavatory deodorant discs, wood preservatives, fungicide, and as an insecticide. It has been used as an intestinal antiseptic and vermicide and in the treatment of pediculosis and scabies.
  • Chemische Eigenschaften Naphthalene is a colorless to brown crystalline solid with a characteristic “moth ball” odor. Shipped as a molten solid.
  • Chemische Eigenschaften white to almost white crystals, crystalline flakes
  • Physikalische Eigenschaften Naphthalene is a crystalline, white, flammable, polycyclic aromatic hydrocarbon consisting of two fused benzene rings. It has a pungent odor and sublimes readily above its melting point; it has been traditionally used in moth balls and is responsible for the moth balls characteristic odor. Naphthalene is a natural component of fossil fuels and is the single most abundant component of coal tar, accounting for approximately 11% of dry coal tar.
  • History In 1819, naphthalene was obtained as white crystals during the pyrolysis of coal tar by John Kidd (1775–1851), a British physician and chemist, and Alexander Garden (1757–1829), an American living in Britain. Kidd described the properties of the white crystals he obtained from coal tar and proposed the named naphthaline for the substance; naphthaline was derived from naphtha, a general term for a volatile, fl ammable, hydrocarbon liquid. Michael Faraday (1791–1867) determined the correct empirical formula for naphthalene in 1825, and Richard August Carl Emil Erlenmeyer (1825–1909) proposed the fused benzene ring structure in 1866.
  • Verwenden Naphthalene is used as a moth repellent; inscintillation counters; and as a raw materialin the manufacture of naphthol, phthalic anhy-dride, and halogenated naphthalenes. It is alsoused in dyes, explosives and lubricants, andin breaking emulsion.
  • Verwenden In addition to oxidation and reduction reactions, naphthalene readily undergoes substitutionreactions such as nitration, halogenation, sulfonation, and acylation to produce a varietyof other substances, which are used in the manufacture of dyes, insecticides, organic solvents,and synthetic resins. The principal use of naphthalene is for the production of phthalic anhydride,C8H4O3.
    Naphthalene is catalytically oxidized to phthalic anhydride: 2C10H8 + 9O2 → 2C4H8O3 +4CO2 + 4H2O using metal oxide catalysts. Phthalic anhydride is used to produce plastics,phthalate plasticizers, insecticides, pharmaceuticals, and resins. Sulfonation of naphthalene withsulfuric acid produces naphthalenesulfonic acids, which are used to produce naphthalene sulfonates.Naphthalene sulfonates are used in various formulations as concrete additives, gypsumboard additives, dye intermediates, tanning agents, and polymeric dispersants. Naphthalene isused to produce carbamate insecticides such as carbaryl, which is a wide-spectrum, generalpurposeinsecticide.
  • Verwenden manufacture of phthalic and anthranilic acids which are used in making indigo, indanthrene, and triphenylmethane dyes. manufacture of hydroxyl (naphthols), amino (naphthylamines), sulfonic acid and similar Compounds used in the dye industries. manufacture of synthetic resins, celluloid, lampblack, smokeless powder. manufacture of hydronaphthalenes (Tetralin, Decalin) which are used as solvents, in lubricants, and in motor fuels. Moth repellent and insecticide.
  • Definition ChEBI: An aromatic hydrocarbon comprising two fused benzene rings. It occurs in the essential oils of numerous plant species e.g. magnolia.
  • Vorbereitung Methode Naphthalene is produced from coal tar or petroleum. It is made from petroleum by dealkylationof methylnaphthalenes in the presence of hydrogen at high temperature and pressure.Petroleum was a major source of naphthalene until the 1980s, but now most naphthaleneis produced from coal tar. The pyrolysis of bituminous coal produces coke and coke ovengases. Naphthalene is condensed by cooling the coke gas and then separated from the gas.
  • Definition A white crystalline solid with a distinctive smell of mothballs. Naphthalene is found in both the middle- and heavy-oil fractions of crude oil and is obtained by fractional crystallization. It is used in the manufacture of benzene-1,2-dicarboxylic anhydride (phthalic anhydride and thence in the production of plastics and dyes.
    The structure of naphthalene is ‘benzene- like’, having two six-membered rings fused together. The reactions are characteristic of AROMATIC COMPOUNDS.
  • Definition naphthalene: A white volatilesolid, C10H8; r.d. 1.025;m.p. 80.55°C; b.p. 218°C. Naphthaleneis an aromatic hydrocarbon withan odour of mothballs and is obtainedfrom crude oil. It is a raw materialfor making certain syntheticresins.
  • Air & Water Reaktionen Highly flammable. Insoluble in water.
  • Reaktivität anzeigen Vigorous reactions, sometimes amounting to explosions, can result from the contact between aromatic hydrocarbons, such as Naphthalene, and strong oxidizing agents. They can react exothermically with bases and with diazo compounds. Substitution at the benzene nucleus occurs by halogenation (acid catalyst), nitration, sulfonation, and the Friedel-Crafts reaction. Naphthalene, camphor, glycerol, or turpentine will react violently with chromic anhydride [Haz. Chem. Data 1967. p 68]. Friedel-Crafts acylation of Naphthalene using benzoyl chloride, catalyzed by AlCl3, must be conducted above the melting point of the mixture, or the reaction may be violent [Clar, E. et al., Tetrahedron, 1974, 30, 3296].
  • Hazard Toxic by inhalation. Upper respiratory tract irritant, cataracts and hemolytic anemia. Possible carcinogen.
  • Health Hazard Inhalation of naphthalene vapor may causeirritation of the eyes, skin, and respiratorytract, and injury to the cornea. Other symptoms are headache, nausea, confusion, andexcitability. The routes of exposure of thiscompound into the body are inhalation, ingestion, and absorption through the skin; andthe organs that may be affected are the eyes,liver, kidney, blood, skin, and central nervoussystem.
    The most severe toxic effects from naphthalene, however, may come from oral intakeof large doses of this compound. In animals, as well as in humans, ingestion of largeamounts may cause acute hemolytic anemiaand hemoglobinuria attributed to its metabolites, 1- and 2-naphthol and naphthoquinones.Infants are more sensitive than adults becauseof their lower capacity for methemoglobinreduction. Other symptoms from ingestion ofnaphthalene are gastrointestinal pain and kidney damage. The LD50 values reported inthe literature show variation among differentspecies. In mice, an oral LD50 value may beon the order of 600 mg/kg. Symptoms of respiratory depression and ataxia were noted.
    Chronic exposure to naphthalene vapormay affect the eyes, causing opacities of thelens and optical neuritis. The acute effectsfrom inhalation of its vapors at high concentrations are nausea and vomiting.
    Inhalation studies have shown positivetumorigenic response in mice. Studies conducted under National Toxicology Program(NTP) show clear evidence of carcinogenicityin rats resulting from inhalation of naphthalene vapors (NTP 2000). Increased incidencesof respiratory epithelial adenoma and olfactory epithelial neuroblastoma in the nose wereobserved in both the sexes of rats. On thebasis of these findings IARC has reevaluatednaphthalene and reclassified it under Group2B carcinogen, as possibly carcinogenic tohumans (IARC 2002)..
  • Health Hazard Fire may produce irritating and/or toxic gases. Contact may cause burns to skin and eyes. Contact with molten substance may cause severe burns to skin and eyes. Runoff from fire control may cause pollution.
  • Brandgefahr Flammable/combustible material. May be ignited by friction, heat, sparks or flames. Some may burn rapidly with flare burning effect. Powders, dusts, shavings, borings, turnings or cuttings may explode or burn with explosive violence. Substance may be transported in a molten form at a temperature that may be above its flash point. May re-ignite after fire is extinguished.
  • Sicherheitsprofil Human poison by ingestion. Experimental poison by ingestion, intravenous, and intraperitoneal routes. Moderately toxic by subcutaneous route. An experimental teratogen. Experimental reproductive effects. An eye and skin irritant. Can cause nausea, headache, daphoresis, hematuria, fever, anemia, liver damage, vomiting, convulsions, and coma. Poisoning may occur by ingestion of large doses, inhalation, or skin absorption. Questionable carcinogen with experimental tumorigenic data. Flammable when exposed to heat or flame; reacts with oxidizing materials. Explosive reaction with dinitrogen pentaoxide. Reacts violently with CrOs, aluminum chloride + benzoyl chloride. Fires in the benzene scrubbers of coke oven gas plants have been attributed to oxidation of naphthalene. Explosive in the form of vapor or dust when exposed to heat or flame. To fight fire, use water, CO2, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes.
  • mögliche Exposition Naphthalene is used as a chemical intermediate or feedstock for synthesis of phthalic, anthranilic, hydroxyl (naphthols), amino (naphthylamines), and sulfonic compounds; which are used in the manufacture of various dyes and in the preparation of phthalic anhydride, 1-naphthyl-N-methyl carbonate; and β-naphthol. Naphthalene is also used in the manufacture of hydronaphthalenes, synthetic resins; lampblack, smokeless powder; and celluloid. Naphthalene has been used as a moth repellent.
    Approximately 100 million people worldwide have G6PD deficiency which would make them more susceptible to hemolytic anemia on exposure to naphthalene. At present, more than 80 variants of this enzyme deficiency have been identified. The incidence of this deficiency is 0.1% in American and European Caucasians, but can range as high as 20% in American blacks and greater than 50% in certain Jewish groups. Newborn infants have a similar sensitivity to the hemolytic effects of naphthalene, even without G6PD deficiency.
  • Erste Hilfe If this chemical gets into the eyes, remove any contact lenses at once and irrigate immediately for at least 15 minutes, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts the skin, remove contaminated clothing and wash immediately with soap and water. Seek medical attention immediately. If this chemical has been inhaled, remove from exposure, begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR if heart action has stopped. Transfer promptly to a medical facility. When this chemical has been swallowed, get medical attention. Give large quantities of water and induce vomiting. Do not make an unconscious person vomit.
  • Versand/Shipping UN1334 Naphthalene, crude or Naphthalene, refined, Hazard Class: 4.1; Labels: 4.1-Flammable solid. UN2304 (molten) Hazard Class: 4.1; Labels: 4.1-Flammable solid.
  • läuterung methode Crystallise naphthalene once or more times from the following solvents: EtOH, MeOH, CCl4, *C6H6, glacial acetic acid, acetone or diethyl ether, followed by drying at 60o in an Abderhalden drying apparatus. It has also been purified by vacuum sublimation and by fractional crystallisation from its melt. Other purification procedures include refluxing in EtOH over Raney Ni and chromatography of a CCl4 solution on alumina with *benzene as eluting solvent. Baly and Tuck [J Chem Soc 1902 1908] purified naphthalene for spectroscopy by heating with conc H2SO4 and MnO2, followed by steam distillation (repeating the process), and formation of the picrate which, after recrystallisation (m 150o) is decomposed with base and the naphthalene is steam distilled. It is then crystallised from dilute EtOH. It can be dried over P2O5 under vacuum (take care not to make it sublime). Also purify it by sublimation and subsequent crystallisation from cyclohexane. Alternatively, it has been washed at 85o with 10% NaOH to remove phenols, with 50% NaOH to remove nitriles, with 10% H2SO4 to remove organic bases, and with 0.8g AlCl3 to remove thianaphthalenes and various alkyl derivatives. Then it is treated with 20% H2SO4, 15% Na2CO3 and finally distilled. [Gorman et al. J Am Chem Soc 107 4404 1985.] Zone refining purified naphthalene from anthracene, 2,4-dinitrophenylhydrazine, methyl violet, benzoic acid, methyl red, chrysene, pentacene and indoline. [Beilstein 5 IV 1640.]
  • Inkompatibilitäten Dust may form explosive mixture with air. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. Violent reactions with chromium(III) oxide, dinitrogen pentoxide; chromic anhydride.
  • Waste disposal Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. All federal, state, and local environmental regulations must be observed. Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≥100 kg/mo) must conform with EPA regulations governing storage, transportation, treatment, and waste disposal.
Naphthalene Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
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91-20-3, Naphthalene Verwandte Suche:
  • 'LGC' (2402)
  • 'LGC' (2603)
  • 1-NAPHTHALENE
  • TAR CAMPHOR
  • Albocarbon
  • Camphor tar
  • camphortar
  • NAPTHALENE
  • NAPTHALIN
  • NAPHTHENE
  • NAPHTHALENE
  • NAPHTHALIN
  • Dezodorator
  • Mighty 150
  • Mighty rd1
  • mighty150
  • mightyrd1
  • Moth balls
  • Moth flakes
  • mothballs
  • mothflakes
  • Naftalen
  • naftalen(polish)
  • naphtalene
  • naphthalene,crude
  • Naphthaleneball
  • Naphthaline
  • Napthalene, molten
  • NCI-C52904
  • Rcra waste number U165
  • rcrawastenumberu165
  • White tar
  • whitetar
  • Melting point standard naphthalene
  • naphthalene, pure
  • REFINED NAPTHALENE POWDER
  • NAPTHALENE FLAKES. (REFINED)
  • NAPTHALENE CRUDE GREY FLAKES
  • NAPTHALENE CRUDE
  • REFINED NAPHTALENE POWDER
  • CRUDE NAPHTHALENE
  • Naphthalene, refined
  • NAPHTHALENE, 99+%, SCINTILLATION GRADE
  • NAPHTHALENE WHITE, PURE
  • NAPHTHALENE, FOR SCINTILLATION
  • NAPHTHALENE, 1X1ML, MEOH, 5000UG/ML
  • NAPHTHALENE, 1X1ML, MEOH, 200UG/ML
  • NAPHTHALENE, 5000MG, NEAT
  • Melting point standard 79-81.C
  • naphthalene naphthalene
  • Naphthalene,98%
  • Naphthalene Zone Refined
  • Naphthalin Naphthene
  • Naphthalene, synthesis grade
  • Naphthalene, reagent grade
  • Naphthalene 5g [91-20-3]
  • Naphthalene (200 mg)
  • Naphthalene, 99% 250GR