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Naphthalene

description naphthalene poisoning

CAS No.91-20-3
Chemical Name:Naphthalene
Synonyms:Naftalen;whitetar;NAPHTHENE;NAPTHALIN;mighty150;mightyrd1;mothballs;White tar;Albocarbon;NAPHTHALIN
CBNumber:CB2472212
Molecular Formula:C10H8
Formula Weight:128.17
MOL File:91-20-3.mol
Naphthalene Property
Melting point : 80-82 °C(lit.)
Boiling point : 218 °C(lit.)
density : 0.99
vapor density : 4.4 (vs air)
vapor pressure : 0.03 mm Hg ( 25 °C)
refractive index : 1.5821
Fp : 174 °F
storage temp. : APPROX 4°C
Water Solubility : 30 mg/L (25 ºC)
Merck : 14,6370
BRN : 1421310
CAS DataBase Reference: 91-20-3(CAS DataBase Reference)
NIST Chemistry Reference: Naphthalene(91-20-3)
EPA Substance Registry System: Naphthalene(91-20-3)
Safety
Hazard Codes : Xn,N,F,T
Risk Statements : 22-40-50/53-67-65-38-11-39/23/24/25-23/24/25-52/53-20
Safety Statements : 36/37-46-60-61-62-45-16-7-33-25-9
RIDADR : UN 1334 4.1/PG 3
WGK Germany : 3
RTECS : QJ0525000
HazardClass : 4.1
PackingGroup : III
HS Code : 29029010
Hazardous Substances Data: 91-20-3(Hazardous Substances Data)

Naphthalene Chemical Properties,Usage,Production

description
Naphthalene, the simplest of the fused or condensed ring hydrocarbon compounds composed of two benzene rings sharing two adjacent carbon atoms. Naphthalene is the most abundant single constituent of coal tar, a volatile product from the destructive distillation of coal, and is also formed in modern processes for the high-temperature cracking (breaking up of large molecules) of petroleum.
Naphthalene is an important hydrocarbon raw material and is primarily used to manufacture phthalic anhydride and polyvinyl chloride (PVC) plastics, but is also used in moth repellents and toilet deodorant blocks.

Exposure to naphthalene is associated with hemolytic anemia, damage to the liver and neurological system, cataracts and retinal hemorrhage. Naphthalene is reasonably anticipated to be a human carcinogen and may be associated with an increased risk of developing laryngeal and colorectal cancer.
Hemolytic anemia has been reported in infants born to mothers who "sniffed" and ingested naphthalene (as mothballs) during pregnancy. Available data are inadequate to establish a causal relationship between exposure to naphthalene and cancer in humans. EPA has classified naphthalene as a Group C, possible human carcinogen.

1-Methylnaphthalene and 2-methylnaphthalene are naphthalene-related compounds. 1-Methylnaphthalene is a clear liquid and 2-methylnaphthalene is a solid; both can be smelled in air and in water at very low concentrations. 1-Methylnaphthalene and 2-methylnaphthalene are used to make other chemicals such as dyes and resins. 2-Methylnaphthalene is also used to make vitamin K.
naphthalene poisoning
Naphthalene is a white solid substance with a strong smell. Poisoning from naphthalene destroys or changes red blood cells so they cannot carry oxygen. This can cause organ damage.

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.

In animals, naphthalene breaks down into other compounds including alpha-naphthol, which may affect the lungs and eyes. Naphthalene was found in the milk of exposed cows, but the residues disappeared quickly after the cows were no longer exposed. Nearly all the naphthalene was broken down into other compounds and excreted in their urine.

References
http://npic.orst.edu/factsheets/naphgen.html
Naphthalene is made from crude oil or coal tar. 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. Naphthalene was first registered as a pesticide in the United States in 1948.
Chemical Properties
white to almost white crystals, crystalline flakes
Usage
Naphthalene was used in liquid-phase exfoliation of graphite in organic solvents for the production of graphene sheets. It was used in preparation of carbon-coated Si 70 Sn 30 nanoparticles. It was used as fluorescent probe to study the aggregation behavior of sodium cholate. It was used to investigate influence of added short chain linear and branched alcohols on the binding of 1:1 complex of naphthalene and β-cyclodextrin.
Air & Water Reactions
Highly flammable. Insoluble in water.
Reactivity Profile
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].
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.
Fire Hazard
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.
Naphthalene Preparation Products And Raw materials
Raw materials
Indene ETHYLENE Biphenyl COAL TAR Technical naphthalene DODECYLBENZENE COAL TAR 1,2,3,4-Tetrahydronaphthalene PETROLEUM ETHER KAOLIN Phenol oil
Preparation Products
1,4,5,8-Naphthalenetetracarboxylic acid 1-Naphthol Peri acid Vat Yellow 4 disodium methylenebisnaphthalenesulphonate DIBENZANTHRONE Linolenic acid BUTYLNAPHTHALENESULFONIC ACID SODIUM SALT 1-Nitronaphthalene 1,5-Dihydroxy naphthalene Vat Brown 5 Tannic acid BARIUM DINONYLNAPHTHALENESULFONATE Vat Yellow 2 SEC-BUTYLAMINE 1-Naphthalene acetic acid 2-Amino-4,8-naphthalenedisulfonic acid 2,6-DIMETHYLNAPHTHALENE 2-Methylbutane dispersing agent CNF 1-Aminonaphthalene-6-sulfonic acid NAPHTHENIC ACID Dispersing agent DN Phthalic anhydride 5-Amino-1-naphthalenesulfonic acid Slushing agent,high efficiency Sodium poly[(naphthaleneformaldehyde)sulfonate] 1-Iodonaphthalene 1,5-Naphthalenedisulfonic acid Benzoic acid 1-Aminonaphthalene Slushing agent synthetic fiber oil QDC-201 2-Naphthol 1-Naphthol-5-sulfonic acid 1'-Acetonaphthone
Naphthalene Suppliers      Global( 245)Suppliers     
SupplierTelFaxEmailCountryProdListAdvantage
Shanghai Macklin Biochemical Co.,Ltd. 021-51821711021-51821727sales@macklin.cnCHINA 13255 55
Hangzhou QiFei Chemical Co., Ltd. 0571-28950939 18058801870 136614904510571-28950939hzqifeihuagong@163.comCHINA 91 55
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833+86-10-82849933jkinfo@jkchemical.com;market6@jkchemical.comCHINA 96835 76
Meryer (Shanghai) Chemical Technology Co., Ltd. +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-59487313(Beijing)+86-(0)21-61259102(Shanghai) +86-(0)755-86170066(ShenZhen) +86-(0)10-88580358(Beijing)sh@meryer.comCHINA 40405 62
3B Pharmachem (Wuhan) International Co.,Ltd. 86-21-50328103 * 801、802、803、804 Mobile:1893055203786-21-503281093bsc@sina.comCHINA 15955 69
future industrial shanghai co., ltd 021-61552785,400-0066-400021-55660885sales@jonln.comCHINA 2061 65
Alfa Aesar 400-610-6006; 021-67582000021-67582001/03/05saleschina@alfa-asia.comCHINA 30324 84
TCI (Shanghai) Development Co., Ltd. 800-988-0390021-67121385sales@tcishanghai.com.cnCHINA 22833 81
BeiJing Hwrk Chemicals Limted 4006990298;010-57411839;0757-86311057;021-51691807010-87653215;0757-86311057;021-55236763sales@hwrkchemical.comCHINA 16343 55
Energy Chemical 021-58432009 / 400-005-6266021-58436166-800info@energy-chemical.comCHINA 44199 61
 
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'LGC' (2402) 'LGC' (2603) 1-NAPHTHALENE Arenes Biochemicals and Reagents Analytical Standards Building Blocks BioChemical Analytical Chromatography Product Catalog 91-20-3 TAR CAMPHOR NAPTHALENE NAPTHALIN NAPHTHENE NAPHTHALENE NAPHTHALIN Detection Alphabetic Fluorescent Probes, Labels, Particles and Stains NA - NI Organic Building Blocks Albocarbon Camphor tar camphortar 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 Standard Solution of Volatile Organic Compounds for Water & Soil Analysis Standard Solutions (VOC) 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
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