| Identification | More | [Name]
Magnesium acetate | [CAS]
142-72-3 | [Synonyms]
ACETIC ACID MAGNESIUM SALT
MAGNESIUM ACETATE
MAGNESIUM ACETATE, 4-HYDRATE
MAGNESIUM ACETATE HYDRATED
MAGNESIUM ACETATE, HYDROUS
MAGNESIUM ACETATE TETRAHYDRATE
acetatedemagnesium
Acetic acid magnesium salt tetrahydrate
Cromosan
Cromosan*
Magnesium diacetate
Magnesiumacetate,anhydrous
magnesiumdiacetate
Mg Acetate
Nu-Mag
MAGNESIUM ACETATE SOLUTION, FOR MOL. BIO L., 1 M IN H2O
MAGNESIUM ACETATE ANHYDROUS, EXTRA PURE 98-102%
MagnesiumAcetate>98%
MagnesiumAcetateBp
MagnesiumAcetateA.R. | [EINECS(EC#)]
205-554-9 | [Molecular Formula]
C4H6MgO4 | [MDL Number]
MFCD00149214 | [Molecular Weight]
142.39 | [MOL File]
142-72-3.mol |
| Chemical Properties | Back Directory | [Appearance]
white deliquescent crystals | [Melting point ]
72-75 °C(lit.) | [density ]
1.5000 | [refractive index ]
n20/D 1.358
| [solubility ]
H2O: 1 M at 20 °C, clear, colorless
| [form ]
Liquid | [pka]
4.756[at 20 ℃] | [color ]
white orthorhombic/monoclinic
crystals, crystalline | [PH]
7.95(1 mM solution);8.23(10 mM solution);8.41(100 mM solution);8.78(1000 mM solution) | [Stability:]
Stable. Incompatible with strong oxidizing agents. Avoid moisture. | [Water Solubility ]
Not miscible or difficult to mix with water. | [λmax]
λ: 260 nm Amax: 0.04
λ: 280 nm Amax: 0.02 | [Merck ]
13,5676 | [BRN ]
3692530 | [InChIKey]
UEGPKNKPLBYCNK-UHFFFAOYSA-L | [LogP]
-1.38 | [Uses]
Dye fixative in textile printing, deodorant, disinfectant, and antiseptic. | [CAS DataBase Reference]
142-72-3(CAS DataBase Reference) | [NIST Chemistry Reference]
Magnesium acetate(142-72-3) | [EPA Substance Registry System]
142-72-3(EPA Substance) |
| Safety Data | Back Directory | [Safety Statements ]
S22:Do not breathe dust .
S24/25:Avoid contact with skin and eyes . | [WGK Germany ]
3
| [RTECS ]
AI5600000
| [F ]
3 | [TSCA ]
Yes |
| Hazard Information | Back Directory | [Description]
Anhydrous Magnesium Acetate has the chemical formula Mg(CH3COO)2 and in its hydrous form, Magnesium Acetate Tetrahydrate, it has the chemical formula Mg(CH3COO)2.4H2O. In this compound the magnesium metal has an oxidation state of 2+.
Magnesium acetate is the magnesium salt of acetic acid.It is deliquescent and upon heating, it decomposes to form magnesium oxide.Magnesium acetate is commonly used as a source of magnesium or as a chemical reagent.
| [Chemical Properties]
Anhydrous magnesium acetate, a white, crystalline, deliquescent solid, occurs in two forms: α-Mg(C2H3O2)2, formed by the reaction of MgO and concentrated acetic acid (13–33%) in boiling ethyl acetate, an and β-Mg(C2H3O2)2 which is formed using 5–6% acetic acid. | [Chemical Properties]
white deliquescent crystals | [Physical properties]
Magnesium acetate appears as white hygroscopic crystals. It smells like acetic acid and is soluble in water. When it is in an aqueous solution its pH can be considered to be neutral. | [Characteristics]
In 1881 Charles Clamond invented the Clamond basket, one of the first effective gas mantles. The reagents used in this invention included magnesium acetate, magnesium hydroxide and water.
Magnesium acetate is commonly used as a source of magnesium or for the acetate ion in chemistry experiments. One example of this is when magnesium acetate and magnesium nitrate were both used to perform molecular dynamics simulations and surface tension measurements. In the experiment the authors found that the acetate had a stronger affinity for the surface compared to the nitrate ion and that the Mg2+ strongly repelled away from the air/liquid interference. They also found that the Mg2+ had a stronger tendency to bind with the acetate ion compared to the nitrate.
One of the more prevalent uses of magnesium acetate is in the mixture called calcium magnesium acetate (CMA). It is a mixture of calcium acetate and magnesium acetate. CMA is thought of as an environmentally friendly alternative deicer to NaCl and CaCl2. CMA also acts as a powerful SO2, NOx, and toxic particulate emission control agent in coal combustion processes to reduce acid rain, and as an effective catalyst for the facilitation of coal combustion. | [Definition]
ChEBI: The magnesium salt of acetic acid. | [Flammability and Explosibility]
Nonflammable | [Safety]
Magnesium Acetate is a relatively safe compound to handle and has been given a health hazard rating of zero. However, it should always be handled with gloves and safety goggles. If it is gets in the eyes, the skin, ingested, or inhaled it will cause irritation in the respective areas: eyes, skin, gastrointestinal system, and lungs. | [Synthesis]
Synthesis of magnesium acetate from the reaction of magnesium hydroxide with acetic acid.
2CH3COOH + Mg(OH)2 → (CH3COO)2Mg + 2H2O
Magnesium carbonate suspended in distilled water with 20 % acetic acid solution.
2CH3COOH + MgCO3 → Mg(CH3COO)2
Reacting metallic magnesium with acetic acid dissolved in dry nitrogen benzene causes Magnesium Acetate to form along with the release a gas, presumably hydrogen.
Mg +2CH3COOH → Mg(CH3COO)2 + H2. | [storage]
Due to the fact that it is very hygroscopic, it must be stored away from water. It is also incompatible with strong oxidizers and should not be mixed with them. | [Purification Methods]
Crystallise it from anhydrous acetic acid, then dry it under vacuum for 24hours at 100o. [Nencollas J Chem Soc 744 1956, Beilstein 2 IV 113.] |
| Questions And Answer | Back Directory | [Uses]
Magnesium acetate is used in the manufacture of rayon fiber for cigarette filters; and as a fixative for dyes in textile printing. It also is used as an antiseptic and disinfectant.
| [Preparation]
Magnesium acetate is prepared by treating magnesium oxide with acetic acid. Magnesium oxide reacts with concentrated acetic acid in boiling ethyl acetate to produce the alpha form of anhydrous magnesium acetate. The beta form is obtained by treating the oxide with 5–6% acetic acid. In slightly hydrated isobutyl alcohol medium the product is a monohydrate, Mg(OOCCH3)2•H2O. In aqueous solution magnesium acetate crystallizes as a tetrahydrate, the commercial product. The tetrahydrate dehydrates to anhydrous salt at 134°C.
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