7429-90-5 Aluminium

Name: Aluminium
Synonyms: 0100MSR;0670TS;0870MSO;0900X;102B;102C;1100H24;1110W;130W;13T;1440YL;1N99;20B2C-M;210EA;350F;4690NS;5207N;550N;5654NS;6050T5;66NLB;716ON;725EA;725N;7640NS;8F02A;900M;91-2343T;97-4071RE;A 1H03P02;A 1H5;A 3303H;A 36 (metal);A95;A 999;A 99N;AA 15;AA 15(metal);AB 1003;AC 1003;AC 5000;ACG 1/2;ACG 3/8;ADS 1;AL 101;AL 885-20;AL-AT 250;ALBO 615;ALC Fine;ALE 06PB;ALE 11PB;APV;APV (metal);ASB (metal);AW 600;AW 666C;AW 808;Aisin Metal Fiber;Al 050P;Al18000;Al-At 500F;AlN 30H0;Alcan 105;Alcan 2000;Alcan 5754;Alcan7100;Alcan XI 1391;Alcoa 7468;Alex;Almi-Paste SSP 303AR;Alpaste 0100M;Alpaste0100MA;Alpaste 0200M;Alpaste 0230M;Alpaste 0230T;Alpaste0241M;Alpaste 0300M;Alpaste 0500M;Alpaste 0539X;Alpaste 0620MS;Alpaste 0780M;Alpaste 0900M;Alpaste 100MS;Alpaste 1100MA;Alpaste 1100NA;Alpaste 1100TA;Alpaste 1109MA;Alpaste1200M;Alpaste1810YL;Alpaste 1830YL;Alpaste 1900XS;Alpaste 1950M;Alpaste1950N;Alpaste 2172EA;Alpaste 240T;Alpaste 241M;Alpaste 4-621;Alpaste 4919;Alpaste50-63;Alpaste 51-148B;Alpaste 51-231;Alpaste 52-509;Alpaste 5301N;Aluminium lngot;
CAS Number:7429-90-5
Molecular Formula:Al
Molecular Weight:26.9815
EINECS:231-072-3
Density:2.70
Boiling Point:2460 ºC
Flash Point:400ºC
Safety Description:Although aluminum is not generally regarded as an industrial poison, inhalation of finely divided powder has been reported to cause pulmonary fibrosis. It is a reactive metal and the greatest industrial hazards are with chemical reactions. As with other metals the powder and dust are the most dangerous forms. Dust is moderately flammable and explosive by heat, flame, or chemical reaction with powerful oxidizers. To fight fire, use special mixtures of dry chemical.

Powdered aluminum undergoes the following dangerous interactions: explosive reaction after a delay period with KClO₄ + Ba(NO₃)₂ + KNO₃ + H₂O, also with Ba(NO₃)₂ + KNO₃ + sulfur + vegetable adhesives + H₂O. Mixtures with powdered AgCl, NH₄NO₃ or NH₄NO₃ + Ca(NO₃)₂ + formamide + H₂O are powerful explosives. Mixture with ammonium peroxodisulfate + water is explosive. Violent or explosive ”thermite” reaction when heated with metal oxides, oxosalts (nitrates, sulfates), or sulfides, and with hot copper oxide worked with an iron or steel tool. Potentially explosive reaction with CCl₄ during ball milling operations. Many violent or explosive reactions with the following halocarbons have occurred in industry: bromomethane, bromotrifluoromethane, CCl₄, chlorodifluoromethane, chloroform, chloromethane, chloromethane + 2-methylpropane, dichlorodifluoro methane, 1,2-dichloroethane, dichloromethane, 1,2-dichloropropane, 1,2-difluorotetrafluoroethane, fluorotrichloroethane, hexachloroethane + alcohol, polytrifluoroethylene oils and greases, tetrachloroethylene, tetrafluoromethane, 1,1,1-trichloroethane, trichloroethylene, 1,1,2-trichlorotrifluoroethane, and trichlorotrifluoroethane-dichlorobenzene. Potentially explosive reaction with chloroform amidinium nitrate. Ignites on contact with vapors of AsCl₃, SCl₂, Se₂Cl₂, and PCl₅. Reacts violently on heating with Sb or As. Ignites on heating in SbCl₃ vapor. Ignites on contact with barium peroxide. Potentially violent reaction with sodium acetylide. Mixture with sodium peroxide may ignite or react violently. Spontaneously ignites in CS₂ vapor. Halogens: ignites in chlorine gas, foil reacts vigorously with liquid Br₂, violent reaction with H₂O + I₂. Violent reaction with hydrochloric acid, hydrofluoric acid, and hydrogen chloride gas. Violent reaction with disulfur dibromide. Violent reaction with the nonmetals phosphorus, sulfur, and selenium. Violent reaction or ignition with the interhalogens: bromine pentafluoride, chlorine fluoride, iodine chloride, iodine pentafluoride, and iodine heptafluoride. Burns when heated in CO₂. Ignites on contact with O₂, and mixtures with O₂ + H₂O ignite and react violently. Mixture with picric acid + water ignites after a delay period. Explosive reaction above 800°C with sodium sulfate. Violent reaction with sulfur when heated. Exothermic reaction with iron powder + water releases explosive hydrogen gas.

Aluminum powder also forms sensitive explosive mixtures with oxidants such as: liquid Cl₂ and other halogens, N₂O₄, tetranitromethane, bromates, iodates, NaClO₃, KClO₃, and other chlorates, NaNO₃, aqueous nitrates, KClO₄ and other perchlorate salts, nitryl fluoride, ammonium peroxodisulfate, sodium peroxide, zinc peroxide, and other peroxides, red phosphorus, and powdered polytetrafluoroethylene (PTFE).

Bulk aluminum may undergo the following dangerous interactions: exothermic reaction with butanol, methanol, 2-propanol, or other alcohols, sodium hydroxide to release explosive hydrogen gas. Reaction with diborane forms pyrophoric product. Ignition on contact with niobium oxide + sulfur. Explosive reaction with molten metal oxides, oxosalts (nitrates, sulfates), sulfides, and sodium carbonate. Reaction with arsenic trioxide + sodium arsenate + sodium hydroxide produces the toxic arsine gas. Violent reaction with chlorine trifluoride. Incandescent reaction with formic acid. Potentially violent alloy formation with palladium, platinum at mp of Al, 600°C. Vigorous dissolution reaction in methanol + carbon tetrachloride. Vigorous amalgamation reaction with mercury(II) salts + moisture. Violent reaction with molten silicon steels. Violent exothermic reaction above 600°C with sodium diuranate.

Analytical Methods:

   

For occupational chemical analysis use OSHA: #ID-125 G or NIOSH: Aluminum, 7013; Elements, 7300.
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