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Aluminum Structure


Chemical Properties

Melting point 660.37 °C (lit.)
Boiling point 2460 °C (lit.)
Density  2.7 g/mL at 25 °C (lit.)
vapor pressure  0.13-1300Pa at 974℃
Flash point 400°C
storage temp.  Flammables area
form  wire
color  Yellow
Specific Gravity 2.702 (Water=1)
PH 0.5 (H2O, 20°C)
Odor Odorless
Resistivity 2.6548 μΩ-cm
Water Solubility  Insoluble in water.
Sensitive  Moisture Sensitive
Merck  13,321 / 13,321
Exposure limits TLV-TWA 10 mg/m3 (Al dust), 5 mg/m3 (pyrophoric Al powder and welding fumes), 2 mg/m3 (soluble Al salts and alkyls) (ACGIH).
Stability Stable. Powder is flammable. Reacts very exothermically with halogens. Moisture and air sensitive. Incompatible with strong acids, caustics, strong oxidizing agents, halogenated hydrocarbons.
CAS DataBase Reference 7429-90-5(CAS DataBase Reference)
FDA 21 CFR 73.1645; 73.2645; 175.105; 175.300; 176.170; 176.200; 178.3910
Indirect Additives used in Food Contact Substances ALUMINUM
EWG's Food Scores 4-9
NCI Dictionary of Cancer Terms aluminum
NIST Chemistry Reference Aluminum(7429-90-5)
EPA Substance Registry System Aluminum (7429-90-5)


Signal wordDanger
Hazard statements H228-H261
Precautionary statements P210-P223-P231+P232-P240-P241-P280
Hazard Codes  F,Xi,Xn,N
Risk Statements  17-15-36/38-10-67-65-62-51/53-48/20-38-11-50
Safety Statements  7/8-43A-43-26-62-61-36/37-33-29-16-9
RIDADR  1396
WGK Germany  3
RTECS  BD0330000
Autoignition Temperature 400 °C
HazardClass  8
PackingGroup  III
HS Code  76032000
Hazardous Substances Data 7429-90-5(Hazardous Substances Data)
Toxicity An element that is abundant (about 8%) in the crust of the earth. Aluminum appears to have no biological function and, from the point of view of acute toxicity, is essentially non-toxic. Because it is primarily eliminated by excretion, people with compromised kidney function may accumulate the metal. In kidney dialysis patients, this is a particular problem because the dialyzing solution may contain high concentrations of aluminum. This condition (dialysis encephalopathy or dialysis dementia) has symptoms that include impaired memory, EEG changes, dementia, aphasia, ataxia, and convulsions.One possible mechanism of toxicity may be inhibition of hexokinases in the brain. The chelating agent deferoxamine has been used successfully in treating this condition.Aluminum is one of the primary toxicants leached into surface water (and, therefore, water supplies) by acid deposition. The connection between aluminum and Alzheimers disease is controversial and many investigators believe there is no connection.
NFPA 704:
0 1

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