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    Magnesium nitrate

    Physical Properties Occurrence and Uses Preparation Reactions
    Magnesium nitrate
    Magnesium nitrate structure
    CAS No.
    10377-60-3
    Chemical Name:
    Magnesium nitrate
    Synonyms
    MG-1000;magniosan;MG POWDER;ASHING ACID;Magnesium gm;MAGNESIUM METAL;Magnesiumnitrat;MAGNESIUM POWDER;MAGNESIUM RIBBON;Magnesium nitrate
    CBNumber:
    CB1122970
    Molecular Formula:
    MgN2O6
    Formula Weight:
    148.3148
    MOL File:
    10377-60-3.mol

    Magnesium nitrate Properties

    Melting point:
    648 °C(lit.)
    Boiling point:
    1090 °C(lit.)
    Density 
    0.889 g/mL at 25 °C
    vapor pressure 
    1 mm Hg ( 621 °C)
    RTECS 
    OM3756000
    Flash point:
    −26 °F
    solubility 
    H2O: soluble
    form 
    turnings
    Water Solubility 
    Freely soluble in water. Moderately soluble in ethanol and ammonia.
    Sensitive 
    Hygroscopic
    Merck 
    13,5697
    Indirect Additives used in Food Contact Substances
    MAGNESIUM NITRATE
    CAS DataBase Reference
    10377-60-3(CAS DataBase Reference)
    EWG's Food Scores
    1
    FDA UNII
    77CBG3UN78
    EPA Substance Registry System
    Magnesium nitrate (10377-60-3)
    SAFETY
    • Risk and Safety Statements
    Symbol(GHS) 
    GHS03,GHS07
    Hazard statements  H272-H315-H319-H335
    Precautionary statements  P210a-P220-P221-P305+P351+P338-P405-P501a
    Hazard Codes  C,Xi,O
    Risk Statements  34-36/37/38-8-36/38-35
    Safety Statements  43-7/8-26-17-36-45-36/37/39
    RIDADR  UN 2056 3/PG 2
    WGK Germany  -
    TSCA  Yes
    HazardClass  5.1
    NFPA 704
    0
    1 0

    Magnesium nitrate price More Price(5)

    Manufacturer Product number Product description CAS number Packaging Price Updated Buy
    Sigma-Aldrich 63043 Magnesium matrix modifier for graphite furnace-AAS 10377-60-3 50 mL $132 2021-03-22 Buy
    Alfa Aesar 010799 Magnesium nitrate hydrate, Puratronic?, 99.999% (metals basis) 10377-60-3 5g $25.1 2021-03-22 Buy
    Alfa Aesar 010799 Magnesium nitrate hydrate, Puratronic?, 99.999% (metals basis) 10377-60-3 25g $82.2 2021-03-22 Buy
    Alfa Aesar 010799 Magnesium nitrate hydrate, Puratronic?, 99.999% (metals basis) 10377-60-3 100g $248 2021-03-22 Buy
    Alfa Aesar 010799 Magnesium nitrate hydrate, Puratronic?, 99.999% (metals basis) 10377-60-3 500g $980 2021-03-22 Buy

    Magnesium nitrate Chemical Properties,Uses,Production

    Physical Properties

    The anhydrous salt consists of white cubic crystals; density 2.3 g/cm3; very soluble in water. The dihydrate is white crystalline solid having density 1.45 g/cm3; decomposes at about 100°C; soluble in water and ethanol. The hexahydrate, MgNO3•6H2O is a colorless solid having monoclinic crystal structure and density 1.46 g/cm3. The salt is hygroscopic and very soluble in water and moderately soluble in ethanol.

    Occurrence and Uses

    The hexahydrate, Mg(NO3)2•6H2O, occurs in nature as mineral nitromagnesite. Magnesium nitrate is used in pyrotechnics; and in the manufacture of concentrated nitric acid to remove water and concentrate the acid vapors to 90–95% HNO3. It also is used to aid coating and prilling in production of ammonium nitrate. The salt also is used as an analytical standard for magnesium and a matrix modifier in furnace atomic absorption spectroscopic analysis. It also finds some limited application as a nitrogenous fertilizer.

    Preparation

    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•2H2O.

    Reactions

    Thermal decomposition of anhydrous Mg(NO3)2 yields magnesium oxide and nitrogen oxides. Heating the hexahydrate above its melting point forms basic nitrates, such as Mg(NO3)2•4 Mg(OH)2. The latter decomposes at 400°C, forming magnesium oxide and oxides of nitrogen. Magnesium nitrate forms addition compounds with a number of nitrogen-containing organics such as pyridine, aniline, and urea.

    Description

    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].

    Chemical Properties

    Magnesium nitrate is white crystalline solid.

    Chemical Properties

    White crystals.Soluble in water and alcohol; deliquescent.

    Uses

    In pyrotechnics; in the concentration of nitric acid.

    Preparation

    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.

    Definition

    ChEBI: The inorganic nitrate salt of magnesium.

    General Description

    A white crystalline solid. Produces toxic oxides of nitrogen if heated to decomposition. Used in pyrotechnics.

    Air & Water Reactions

    Deliquescent. Water soluble.

    Reactivity Profile

    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.

    Safety Profile

    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.

    Potential Exposure

    Magnesium nitrate is used in fireworks and in the production of concentrated nitric acid.

    Shipping

    UN1474 Magnesium nitrate, Hazard Class: 5.1; Labels: 5.1-Oxidizer

    Incompatibilities

    A powerful oxidizer. Violent reaction with dimethylformamide, reducing agents; combustibles, fuels, organic and easily oxidizable matter

    Magnesium nitrate Preparation Products And Raw materials

    Raw materials

    Preparation Products

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