Magnesiumnitrat

Bezeichnung:Magnesiumnitrat

CAS-Nr10377-60-3

Englisch Name:Magnesium nitrate

CBNumberCB1122970

SummenformelMgN2O6

Molgewicht148.3148

MOL-Datei10377-60-3.mol

Synonyma

Magnesiumnitrat

Salpetersäure, Magnesiumsalz

Magnesiumnitrat physikalisch-chemischer Eigenschaften

Schmelzpunkt	648 °C(lit.)
Siedepunkt	1090 °C(lit.)
Dichte	0.889 g/mL at 25 °C
Dampfdruck	1 mm Hg ( 621 °C)
RTECS-Nr.	OM3756000
Flammpunkt	−26 °F
Löslichkeit	H₂O: soluble
Aggregatzustand	turnings
Farbe	white cubic crystals, crystalline
Wasserlöslichkeit	Freely soluble in water. Moderately soluble in ethanol and ammonia.
Sensitive	Hygroscopic
Merck	13,5697
Expositionsgrenzwerte	ACGIH: TWA 2 ppm; STEL 4 ppm OSHA: TWA 2 ppm(5 mg/m3) NIOSH: IDLH 25 ppm; TWA 2 ppm(5 mg/m3); STEL 4 ppm(10 mg/m3)
CAS Datenbank	10377-60-3(CAS DataBase Reference)
EPA chemische Informationen	Magnesium nitrate (10377-60-3)

Sicherheit

Kennzeichnung gefährlicher	C,Xi,O
R-Sätze:	34-36/37/38-8-36/38-35
S-Sätze:	43-7/8-26-17-36-45-36/37/39
RIDADR	UN 2056 3/PG 2
WGK Germany	-
TSCA	Yes
HazardClass	5.1
Giftige Stoffe Daten	10377-60-3(Hazardous Substances Data)

Gefahreninformationscode (GHS)

Magnesium nitrate Chemische Eigenschaften,Einsatz,Produktion Methoden

ERSCHEINUNGSBILD
HYGROSKOPISCHE FARBLOSEODER WEISSE KRISTALLE.
CHEMISCHE GEFAHREN
Starkes Oxidationsmittel. Reagiert mit brennbaren und reduzierenden Stoffen. Feuer- und Explosionsgefahr.
ARBEITSPLATZGRENZWERTE
TLV nicht festgelegt (ACGIH 2005).
MAK nicht festgelegt (DFG 2005).
AUFNAHMEWEGE
Aufnahme in den Körper durch Inhalation des Aerosols und durch Verschlucken.
INHALATIONSGEFAHREN
Eine belästigende Partikelkonzentration in der Luft kann beim Dispergieren schnell erreicht werden.
WIRKUNGEN BEI KURZZEITEXPOSITION
WIRKUNGEN BEI KURZZEITEXPOSITION:
Reizt möglicherweise die Augen und die Atemwege mechanisch. Beim Verschlucken sind Auswirkungen auf das Blut mit nachfolgender Methämoglobinbildung möglich. Die Auswirkungen treten u.U. verzögert ein. ärztliche Beobachtung notwendig.
LECKAGE
Verschüttetes Material in Kunststoffbehältern sammeln. Reste mit viel Wasser wegspülen.
R-Sätze Betriebsanweisung:
R34:Verursacht Verätzungen.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
R8:Feuergefahr bei Berührung mit brennbaren Stoffen.
R36/38:Reizt die Augen und die Haut.
S-Sätze Betriebsanweisung:
S43:Zum Löschen . . . (vom Hersteller anzugeben) verwenden (wenn Wasser die Gefahr erhöht, anfügen: "Kein Wasser verwenden").
S7/8:Behälter trocken und dicht geschlossen halten.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S17:Von brennbaren Stoffen fernhalten.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
Beschreibung
Magnesium nitrate has the molecular formula of Mg(NO3)2 and the molecular weight of 148.3152 g/ mol.
Magnesium nitrate is prepared by the action of nitric acid on magnesium carbonate, oxide or hydroxide:
MgCO3 + 2HNO3 ? Mg(NO3)2 + CO2 +H2O
Mg(OH)2 + 2HNO3 ? Mg(NO3)2 + 2H2O
The salt crystallizing at room temperature after evaporation is the hexahydrate, Mg(NO3)2·6H2O. Two stable hydrates are formed, the hexahydrate [CAS number =13446-18-9] and the dihydrate, Mg(NO3)2· 2H2O [CAS number = 15750-45-5].
Chemische Eigenschaften
White crystals.Soluble in water and alcohol; deliquescent.
Chemische Eigenschaften
Magnesium nitrate is white crystalline solid.
Verwenden
It is used in printing, chemical, agriculture and ceramics industries. Its fertilizer grade has 10.5% nitrogen and 9.4% magnesium.
Verwenden
In pyrotechnics; in the concentration of nitric acid.
Definition
ChEBI: The inorganic nitrate salt of magnesium.
synthetische
The magnesium nitrate used in commerce has been synthesized in a variety of ways. The reaction between nitric acid and magnesium metal is one way and reaction with MgO is another. Magnesium hydroxide and ammonium nitrate also form the product but ammonia is released as a by-product:
2HNO3 + Mg Mg(NO3)2 +H2
2HNO3 + MgO Mg(NO3)2 +H2O
Mg(OH)2 + 2NH4NO3 Mg(NO3)2 + 2NH3 + 2H2O
Since magnesium nitrate has a high affinity for water, heating the hexahydrate does not result in the dehydration of the salt. Instead, it decomposes into magnesium oxide, oxygen and nitrogen oxides:
4Mg(NO3)2·6H2O + heat 4MgO + 2NO2 + 2N2O + O2 + 6H2O
Heating the hexahydrate above its melting point first forms basic nitrates, such as Mg(NO3)2·4Mg(OH)2. It is this salt that decomposes at 400 C, forming magnesium oxide and oxides of nitrogen. The absorption of these nitrogen oxides in water is one possible way to synthesize HNO3. Although it is inefficient, it does not require the use of another strong acid and the mineral, nitromagnesite, can be used in this context.
Allgemeine Beschreibung
A white crystalline solid. Produces toxic oxides of nitrogen if heated to decomposition. Used in pyrotechnics.
Air & Water Reaktionen
Deliquescent. Water soluble.
Reaktivität anzeigen
Mixtures of Magnesium nitrate with alkyl esters may explode owing to the formation of alkyl nitrates; mixtures with phosphorus, tin(II) chloride, or other reducing agents may react explosively [Bretherick 1979 p. 108-109]. Noncombustible but will accelerate the burning of combustible materials. If large quantities are involved in a fire or the combustible material is finely divided an explosion may result. Prolonged exposure to fire or heat may result in an explosion. Magnesium nitrate has been reported to undergo spontaneous decomposition in dimethylformamide [Bretherick 5th ed., 1995]. Magnesium nitrate tends to behave as a strong oxidizer.
Hazard
Dangerous fire and explosion risk in contact with organic materials, strong oxidizing agent.
Health Hazard
Exposure can cause mild irritation to the mucous membranes. Symptoms may include coughing and shortness of breath. Ingestion of large doses may cause dizziness, abdominal pain, vomiting, bloody diarrhea, weakness, convulsions, and collapse. Contact with skin may cause irritation, redness, and pain.
Flammability and Explosibility
Non flammable
Sicherheitsprofil
Probably a severe irritant to the eyes, skin, and mucous membranes. A powerful oxidizer. Violent decomposition on contact with dmethylformamide. When heated to decomposition it emits toxic fumes of NOx. See also NITRATES and MAGNESIUM COMPOUNDS.
mögliche Exposition
Magnesium nitrate is used in fireworks and in the production of concentrated nitric acid.
Erste Hilfe
If this chemical gets into the eyes, remove anycontact lenses at once and irrigate immediately for at least15 min, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts theskin, remove contaminated clothing and wash immediatelywith soap and water. Seek medical attention immediately. Ifthis chemical has been inhaled, remove from exposure,begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR ifheart action has stopped. Transfer promptly to a medicalfacility. When this chemical has been swallowed, get medical attention. Give large quantities of water and inducevomiting. Do not make an unconscious person vomit.Note to physician: Treat for methemoglobinemia.Spectrophotometry may be required for precise determination of levels of methemoglobin in urine.
Lager
Color Code—Yellow: Reactive Hazard (strongoxidizer); Store in a location separate from other materials,especially flammables and combustibles. Prior to workingwith this chemical you should be trained on its proper handling and storage. Magnesium nitrate must be stored toavoid contact with dimethyl formamide, fuels, and strongreducing agents, since violent reactions occur. Store intightly closed containers in a cool, well-ventilated areaaway from flammable and combustible materials. Avoidstorage on wood floors. See OSHA Standard 1910.104 andNFPA 43A Code for the Storage of Liquid and SolidOxidizers for detailed handling and storage regulations.
Versand/Shipping
UN1474 Magnesium nitrate, Hazard Class: 5.1; Labels: 5.1-Oxidizer
Inkompatibilitäten
A powerful oxidizer. Violent reaction with dimethylformamide, reducing agents; combustibles, fuels, organic and easily oxidizable matter

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