SPECTRUM

Chemical Fact Sheet

Chemical Abstract Number (CAS #) 90120
CASRN 90-12-0
Synonyms1-METHYLNAPHTHALENE
alpha-Methylnaphthalene; Naphthalene, 1-Methyl-; Fema-number-3193
Molecular FormulaC11H10

Link to the National Library of Medicine's Hazardous Substances
Database for more details on this compound.

UseORGANIC SYNTHESIS [R3] Used as dye carrier [R4]
Apparent ColorColorless liquid
OdorN/A
Boiling Point244.6 deg C
Melting Point -22 deg C
Molecular Weight142.2
MiscDENSITY: 1.0202 @ 20 DEG C/4 DEG C Phthalic anhydride was used in the manufacture of alkyd and polyester resins, dyes, pigments, pharmaceuticals, and insecticides. In the manufacture of insecticides, 12.2% was used to make insecticides such as 1-naphthyl-N-methylcarbamate (carbaryl). 11% percent was used as an intermediate in the manufacturing of dyestuffs, pigments, and pharmaceuticals. The remainder was used in the manufacture of alkyl-naphthalenesulfonates (used in the manufacture of detergents and textile wetting agents), alkylnaphthalenes (used in making textile spinning lubricants), chlorinated naphthalenes and tetra- and decahydronaphthalenes (used in solvent mixtures). /Alkylnaphthalenes/ [R5] SURFACE WATER: 1-Methylnaphthalene was detected in coastal waters at Vineyard Sound, MA at concn ranging from 0.5 to 14.0 ng/L with an average concn of 4.4 ng/L(1). 1-Methylnaphthalene is also listed as a contaminant of coastal waters off Narragansett Bay, RI(2), Los Angeles River stormwaters(3) and Lake Ontario(4). [R39] GROUNDWATER: 1-Methylnaphthalene was detected in a coal tar contaminated aquifer in St. Louis Park, MN(1) at concn ranging from less than 0.01 to 32 mg/kg sediment(2). Stored wastes from a former pine-tar manufacturing site in Gainesville, FL have contaminated surrounding ground waters with concn of 1-methylnaphthalene ranging from 0.9 to 130 ug/l(3). Wood preserving chemicals at Pensacola, FL are responsible for 1-methylnaphthalene concn of 0.79, 0.30 and 0.46 mg/l at ground water depths of 6, 12 and 18 m, respectively(4). At Conroe, TX a creosote waste facility has contaminated groundwater with 1-methylnaphthalene at concn ranging from 2.3 to 180.7 ug/l(5). 1-Methylnaphthalene was identified in the ground water leachate from the Waterloo and Northbay landfills, Ontario, Canada at concn ranging from 0.1 to 13 ug/l(6). [R40] RAIN/SNOW: Rain water in Portland, OR contained 1-methylnaphthalene at concn ranging from 13 to 48 ng/l between Feb 12 and April 12, 1984(1). Snow pack from the city of St. Marie, Canada contained 1-methylnaphthalene at concn ranging from less than 0.050 to 0.169 ug/l(2). [R41] 1-Methylnaphthalene was detected in the leachate from an unspecified number of 58 municipal landfills at an average concn of 0.033 mg/l(1). Coal tar leachate was found to contain 1-methylnaphthalene(2,3). Secondary effluent at Fort Polk, LA contained 1-methylnaphthalene at a concn of 0.29 ug/l on Nov 4, 1980(4). 1-Methylnaphthalene was also detected in the municipal wastewaters from 4 major treatment plants in Southern CA(5) and in Los Angeles County effluent at a concn of 10 ug/l(6). Urban runoff to the Narragansett Bay, RI contained 1-methylnaphthalene at concn of 4.234, 5.076, 6.563 and 5.909 ug/cm/sq km from residential, commercial, industrial and highway land uses, respectively(7). 1-Methylnapthalene was also identified as a stack emission(8) and a component of fly ash(9) from waste incinerators. Data from Aug 25 to Sept 7 1979 showed for a speed of 80 km/hr on straight and level highway, gasoline powered vehicles emitted 1-methylnapthalene at an average rate of 1.8 mg/km and diesel trucks emitted 1-methylnapthalene at an average of 1.3 mg/km(10). [R42] Motorboats were shown to emit 1-methylnaphthalene to canal water with resultant concn of 1 to 92 ng/L(1). 1-Methylnaphthalene was detected in the water discharged from a hydrocarbon vent of an offshore oil platform at a concn of 20 ug/L(2). The dissolved air floatation effluent of a Class B oil refinery contained 1-methylnaphthalene at a concn of 448 ng/g(3). Effluents from refineries, petrochemical industry, metallurgic industry and municipal wastewater treatment plants in Norway contained 1-methylnaphthalene with a 68% frequency of appearance(4). Reactor tar from a coal gasification plant contained 1-methylnaphthalene at a concn of 29.6 mg/g(5). Effluent from a textile finishing operation also contained 1-methylnaphthalene(6). [R43] Sediment from the Duwamish River delta, WA contained 1-methylnaphthalene at an average concn of 70 ng/g(1). Sediments from three sites in Eagle Harbor and one at President Point, WA contained 1-methylnaphthalene at an average concn of 52, 1400, 12 and less than 3.5 ng/g for 4, 9, 2 and 1 sample(s) respectively(2). Sediments from Providence River, Mid-bay and Rhode Island Sound, RI contained 1-methylnaphthalene at an average concn of 21.4, 4.6 and 1.3 ng/g, respectively(3). Sediment from George's Bank contained 1-methylnaphthalene at an average concn of 1.18 ng/g(4). 1-Methylnaphthalene was also detected in sediments from Dohkai Bay(5) and Puget Sound, WA(6) and the Elizabeth River, VA(7). At Conroe, TX a creosote waste facility has contaminated the ground at depths of 0.7-1.8, 5, 10 and 24-25 m with concn of 1-methylnaphthalene of 2.06, 0.21, 0.07 and 0.02 mg/kg(8). [R44] The concn of 1-methylnaphthalene was 2 ug/cu m in the outdoor air at shale oil wastewater facility(1). Atmospheric concn of methylnaphthalene ranged from 3.1 to 20.0 ng/cu m at New Bedford, MA(2). In 1983-4 the average outdoor air concn of 1-methylnaphthalene in northern Italy was 4 ug/cu m for 2 of 6 samples(3). 1-Methylnaphthalene was also detected in the air of Sundsvall, Sweden(4) and So CA(5). On Feb 25, 1986, the ambient air concn of 1-methylnaphthalene was 1100 ng/cu m for Torrance, CA(6). According to a national survey of ambient air the average daily atmospheric concn of 1-methylnaphthalene based on 17 data points is 0.011 ppbv(7). [R45] FOOD: 1- Methylnaphthalene was identified as a volatile component of cassava(1), roasted filberts(2) and nectarines(3). Assorted types of lima, pinto, red kidney, black, navy and mung beans, soybeans, split peas and lentils were found to contain 1-methylnaphthalene at concn ranging from 2.8 to 49.2 ppb(4). [R46] NON-ALCOHOLIC BEVERAGES: 1.0 PPM; ICE CREAMS, ICES: 1.0 PPM; CANDY: 1.0 PPM; GELATINS & PUDDINGS: 1.0 PPM. [R1] FISH: 1-METHYLNAPHTHALENE WAS IDENTIFIED BY GAS CHROMATOGRAPHY/MASS SPECTROMETRY IN FLESH EXTRACT OF EELS (ANGUILLA JAPONICA TEMMINCK ET SCHLEGEL) MAINTAINED IN CONTROLLED LABORATORY ENVIRONMENT OF WATER WITH SUSPENSION OF CRUDE OIL. [R18] In 1978, fishes from the central Gulf of Mexico contained 1-methylnaphthalene at concn ranging from 30 to 630 ng/g wet weight(1). Paper scallop, Brown shrimp, and Texas venus from the central Gulf of Mexico contained 1-methylnaphthalene at concn of 220, 10 and 70 ng/g wet weight, respectively(1). In Nigeria, African mudfish (C. lazera) averaged 19.52, 25.31, 16.22 and 37.45 ng of 1-methylnaphthalene/g of dry weight; Tilapia sp. (S. niloticus) averaged 25.92, 24.43, 24.26 and 22.92 ng of 1- methylnaphthalene/g of dry weight; Tilapia sp. (S. galileus) averaged 23.32, 22.16, 24.24 and 20.15 ng of 1-methylnaphthalene/g of dry weight; Tilapia sp. (T. zilli) averaged 20.66, 22.82, 21.33 and 21.96 ng of 1-methylnaphthalene/g of dry weight; and H. fasiatus averaged 29.20, 2.76, 3.02 and 3.66 ng of 1-methylnaphthalene/g of dry weight for the preservation methods of traditionally smoked, traditionally solar dried, oven dried and the University of Ife solar drying technique, respectively(2). The level of 1-methylnaphthalene in the same digestive gland oil of lobsters ranged from 8.8 to 65.3 according to 4 different laboratories(3). [R47] /1-Methylnaphthalene is a component of cigarette smoke condensate/. [R48] Based upon the national average daily atmospheric concn of 0.011 ppbv for 1-methylnapthalene(1) and the average daily inhalation of human adult of 20 cu m of air, the average daily intake of 1-methylnapthalene via air is 0.22 ug(SRC). A National Survey of drinking water supplies listed of 1-methylnaphthalene a common contaminant for several major US cities(2). Based upon a selected water concn of 0.4 ng/L for 1-methylnapthalene and the average daily consumption of 2 liters of water, the average daily intake of 1-methylnapthalene via water is 0.80 ng(SRC). [R49] Workers at a creosote impregnation plant for lumber were exposed to an average atmospheric concn of 1-methylnaphthalene of 2.2 mg/cu m for 18 samples(1). The concn of 1-methylnaphthalene in the personal air at the coal preparation area of a solvent refined coal pilot plant was 2.3, 1.0 and 0.8 ug/cu m for a welder and two operators, respectively(2). 1-Methylnaphthalene was found to be completely in the gaseous phase in the workplace air of an aluminum plant at Soderberg, Norway at an average concn of 5.10 ug/cu m(3). [R50] THE AROMATIC SOLVENT AEROTEX 3470 WAS ANALYZED BY GAS CHROMATOGRAPHY, MASS SPECTROMETRY, & A COMBINATION OF THESE TECHNIQUES WITH 1-METHYLNAPHTHALENE BEING A MAJOR COMPONENT. DETECTION LIMIT WAS 1-10 PPM. [R52] 1-METHYLNAPHTHALENE WAS IDENTIFIED & QUANTITATED BY REVERSED PHASE HIGH PERFORMANCE LIQUID CHROMATOGRAPHY GAS CHROMATOGRAPHY IN WATER AT THE NG/L TO UG/L LEVEL. THE PROCEDURE INVOLVES FORCING AN AQ SAMPLE THROUGH A GLASS MICROFIBER FILTER CONNECTED IN SERIES WITH A HIGH PERFORMANCE LIQUID CHROMATOGRAPHY (HPLC) COLUMN. THE HPLC COLUMN CONTAINING THE POLYNUCLEAR AROMATIC HYDROCARBON MATERIAL IS THEN ATTACHED TO A C-18 MICROPACKED REVERSE PHASE SETUP AND ELUTED WITH AN ACETONITRILE WATER GRADIENT. FRACTIONS CORRESPONDING TO EACH UV PEAK ARE COLLECTED AND THESE AQ-ACETONITRILE FRACTIONS ARE THEN INJECTED DIRECTLY INTO A GAS CHROMATOGRAPH EQUIPPED WITH A PHOTOIONIZATION DETECTOR. [R53] CAPILLARY GAS CHROMATOGRAPHY OF THE ISOMERIC DIMETHYLNAPHTHALENES AND OF SOME ADDITIONAL AROMATIC COMPOUNDS, INCL 1-METHYLNAPHTHALENE, WAS STUDIED. RETENTION INDICES WERE OBTAINED ON OPEN TUBULAR GLASS CAPILLARY COLUMNS, WALL COATED WITH OV-17 AND WITH OV-275. THESE COLUMNS WERE USED IN CONJUCTION WITH A PERKIN ELMER F33 GAS CHROMATOGRAPH WHICH WAS EQUIPPED WITH FLAME IONIZATION DETECTION. THE CARRIER GAS USED WAS HELIUM AT 12 PSI, ABOUT 1 ML/MIN. [R54] 1-METHYLNAPHTHALENE WAS IDENTIFIED BY GAS CHROMATOGRAPHY/MASS SPECTROMETRY IN FLESH EXTRACT OF EELS (ANGUILLA JAPONICA TEMMINCK ET SCHLEGEL) MAINTAINED IN CONTROLLED LABORATORY ENVIRONMENT OF WATER WITH SUSPENSION OF CRUDE OIL. [R18]

DISCLAIMER - Please Read

Florida-Spectrum List of Services
Florida-Spectrum Homepage