Magnesiumdi(acetat)

Bezeichnung:Magnesiumdi(acetat)

CAS-Nr142-72-3

Englisch Name:Magnesium acetate

CBNumberCB2160485

SummenformelC4H6MgO4

Molgewicht142.39

MOL-Datei142-72-3.mol

Synonyma

Magnesiumdi(acetat)

Magnesiumdi(acetat) physikalisch-chemischer Eigenschaften

Schmelzpunkt	72-75 °C(lit.)
Dichte	1.5000
Brechungsindex	n20/D 1.358
Löslichkeit	H₂O: 1 M at 20 °C, clear, colorless
pka	4.756[at 20 ℃]
Aggregatzustand	Liquid
Farbe	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)
Wasserlöslichkeit	Not miscible or difficult to mix with water.
maximale Wellenlänge (λmax)	λ: 260 nm Amax: 0.04 λ: 280 nm Amax: 0.02
Merck	13,5676
BRN	3692530
Stabilität	Stable. Incompatible with strong oxidizing agents. Avoid moisture.
InChIKey	UEGPKNKPLBYCNK-UHFFFAOYSA-L
LogP	-1.38
CAS Datenbank	142-72-3(CAS DataBase Reference)
NIST chemische Informationen	Magnesium acetate(142-72-3)
EPA chemische Informationen	Magnesium acetate (142-72-3)

Sicherheit

S-Sätze:	22-24/25
WGK Germany	3
RTECS-Nr.	AI5600000
F	3
TSCA	Yes

Gefahreninformationscode (GHS)

Magnesium acetate Chemische Eigenschaften,Einsatz,Produktion Methoden

S-Sätze Betriebsanweisung:
S22:Staub nicht einatmen.
S24/25:Berührung mit den Augen und der Haut vermeiden.
Beschreibung
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.
Chemische Eigenschaften
white deliquescent crystals
Chemische Eigenschaften
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.
Physikalische Eigenschaften
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.
Charakteristisch
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, NO_x, 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.
Verwenden
Magnesium acetate is used in molecular biology applications such as batch in vitro transcription of RNA and the crystallization of transcription factor:DNA complexes and proteins via the sitting-drop vapor-diffusion method. Also used as a buffer and to detect sodium and as a catalyst for sulfuric acid.
Verwenden
The largest use for magnesium acetate is in the production of rayon fiber, which is used for cigarette filter tow. Magnesium acetate also has uses as a dye fixative in textile printing, as a deodorant, disinfectant, an antiseptic in medicine, and as a reagent chemical.
Verwenden
Dye fixative in textile printing, deodorant, disinfectant, and antiseptic.
Magnesium acetate is used in chemistry and molecular biology as a reagent and a source of magnesium. Magnesium has a variety of biological roles in enzymology, cell membrane and wall structural integrity, muscle cell physiology, and nucleic acid structure.Magnesium is an essential co-factor in many enzymes, including deoxyribonuclease (DNase), the restriction enzymes EcoR I and EcoR V, and Ribonuclease H. Magnesium also stabilizes polymeric nucleic acids such as transfer RNA and ribozymes.
Magnesium acetate has been widely used in the crystallization of proteins. A protocol for the separation of MB and BB isoenzymes of creatine kinase and the LD1 isoenzyme of lactate dehydrogenase that involves elution with magnesium acetate has been published.
Definition
ChEBI: The magnesium salt of acetic acid.
Flammability and Explosibility
Non flammable
Sicherheit(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.
Synthese
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.
Lager
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.
läuterung methode
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.]

Magnesium acetate Upstream-Materialien And Downstream Produkte

Magnesiumdi(acetat) Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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