Magnesium atomic absorption standard solution (cas 7439-95-4) Molecular Structure

CAS No. 7439-95-4 (Magnesium atomic absorption standard solution )

Molecular Formula: MgMolecular Weight: 24.3

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References of Magnesium atomic absorption standard solution cas 7439-95-4

} Safety

Inhalation of dust and fumes can cause metal fume fever. The powdered metal ignites readily on the skin causing burns. Particles embedded in the skin can produce gaseous blebs that heal slowly.
A dangerous fire hazard in the form of dust or flakes when exposed to flame or oxidizing agents. In solid form, magnesium is difficult to ignite because heat is conducted rapidly away from the source of ignition; it must be heated above its melting point before it will burn. However, in finely divided form, it may be ignited by a spark or the flame of a match. Magnesium fires do not flare up violently unless there is moisture present. Therefore, it must be kept away from water, moisture, etc. It may ignited spontaneously when the material is finely divided and damp, particularly with water-oil emulsion. Moderately explosive in the form of dust when exposed to flame. Also, magnesium reacts with moisture, acids, etc., to evolve hydrogen, a highly dangerous fire and explosion hazard.
Explosive reaction or ignition with calcium carbonate + hydrogen + heat, gold cyanide + heat, mercury cyanide + heat, silver oxide + heat, fused nitrates, phosphates, or sulfates (e.g., ammonium nitrate, metal nitrates), chloroformamidinium nitrate + water (when ignited with powder). The powder may explode on contact with halocarbons (e.g., chloromethane, chloroform, or carbon tetrachloride), and explodes when sparked in dichlorodifluoromethane. Hypergolic reaction with nitric acid + 2-nitroaniline. Mixtures of powdered magnesium and methanol are more powerful than some military explosives. Mixtures of magnesium powder + water can be detonated. Reacts with acetylenic compounds including traces of acetylene found in ethylene gas to form explosive magnesium acetylide.
Violent reactions with ammonium salts, chlorate salts, beryllium fluoride, boron diiodophosphide, carbon tetrachloride + methanol, 1,1,1-trichloroethane, 1,2-dibromoethane, halogens or interhalogens (e.g., fluorine, chlorine, bromine, iodine vapor, chlorine trifluoride, iodine heptafluoride), hydrogen iodide, metal oxides + heat (e.g., beryllium oxide, cadmium oxide, copper oxide, mercury oxide, molybdenum oxide, tin oxide, zinc oxide), nitrogen (when ignited), silicon dioxide powder + heat, polytetrafluoroethylene powder + heat, sulfur + heat, tellurium + heat, barium peroxide, nitric acid vapor, hydrogen peroxide, ammonium nitrate, sodium iodate + heat, sodium nitrate + heat, dinitrogen tetraoxide (when ignited), lead dioxide. Ignites in carbon dioxide at 780°C, molten barium carbonate + water, fluorocarbon polymers + heat, carbon tetrachloride or trichloroethylene (on impact), dichlorodifluoromethane + heat.
Incompatible with ethylene oxide, metal oxosalts, oxidants, potassium carbonate, Al + KClO4, [Ba(NO3)2 + BaO2 + Zn], bromobenzyl trifluoride, CaC, carbonates, CHCl3, [CuSO4 (anhydrous) + NH4NO3 + KClO3 + H2O], CuSO4, (H2 + CaCO3), CH3Cl, NO2, liquid oxygen, metal cyanides (e.g., cadmium cyanide, cobalt cyanide, copper cyanide, lead cyanide, nickel cyanide, zinc cyanide), performic acid, phosphates, KClO3, KClO4, AgNO3, NaClO4, (Na2O2 + CO2), sulfates, trichloroethylene, Na2O2.
To fight fire, operators and firefighters can approach a magnesium fire to within a few feet if no moisture is present. Water and ordinary extinguishers, such as CO2, carbon tetrachloride, etc., should not be used on magnesium fires. G-1 powder or powdered talc should be used on open fires. Dangerous when heated; burns violently in air and emits fumes; will react with water or steam to produce hydrogen.
Hazard Codes:?FlammableF,HarmfulXn
Risk Statements: 34-15-11-17-36/37/38-22-19?
R34:Causes burns.?
R15:Contact with water liberates extremely flammable gases.?
R11:Highly flammable.?
R17:Spontaneously flammable in air.?
R36/37/38:Irritating to eyes, respiratory system and skin.?
R22:Harmful if swallowed.?
R19:May form explosive peroxides.
Safety Statements: 43-7/8-43A-36-33-26?
S43:In case of fire use ... (there follows the type of fire-fighting equipment to be used.)?
S7/8:Keep container tightly closed?and?dry.?
S36:Wear suitable protective clothing.?
S33:Take precautionary measures against static discharges.?
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
RIDADR: UN 2056 3/PG 2
WGK Germany: 1
RTECS: OM3756000
F: 3-9
HazardClass: 4.1
PackingGroup: III
HS Code: 81049000