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Magnesium acetate

Uses Preparation
Magnesium acetate
Magnesium acetate structure
Chemical Name:
Magnesium acetate
Nu-Mag;Cromosan;Cromosan*;Mg Acetate;MAGNESIUM ACETATE;acetatedemagnesium;magnesiumdiacetate;MagnesiumAcetateBp;Magnesium diacetate;MagnesiumAcetate>98%
Molecular Formula:
Formula Weight:
MOL File:

Magnesium acetate Properties

Melting point:
72-75 °C(lit.)
refractive index 
n20/D 1.358
H2O: 1 M at 20 °C, clear, colorless
5.0-7.0 (25℃)
Water Solubility 
Not miscible or difficult to mix with water.
λ: 260 nm Amax: 0.04
λ: 280 nm Amax: 0.02
Stable. Incompatible with strong oxidizing agents. Avoid moisture.
CAS DataBase Reference
142-72-3(CAS DataBase Reference)
NIST Chemistry Reference
Magnesium acetate(142-72-3)
EPA Substance Registry System
Acetic acid, magnesium salt(142-72-3)
  • Risk and Safety Statements
Safety Statements  22-24/25
WGK Germany  3
RTECS  AI5600000

Magnesium acetate price More Price(4)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 63052 Magnesium acetate solution BioUltra, for molecular biology, ~1 M in H2O 142-72-3 100ml $90.6 2018-11-13 Buy
Sigma-Aldrich 63052 Magnesium acetate solution BioUltra, for molecular biology, ~1 M in H2O 142-72-3 500ml $325 2018-11-13 Buy
Alfa Aesar J60041 Magnesium acetate, 1M aq. soln. 142-72-3 50ml $32.4 2018-11-13 Buy
Alfa Aesar J60041 Magnesium acetate, 1M aq. soln. 142-72-3 100ml $48.7 2018-11-13 Buy

Magnesium acetate Chemical Properties,Uses,Production


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.


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.


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

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.


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.


Dye fixative in textile printing, deodorant, disinfectant, and antiseptic.


ChEBI: The magnesium salt of acetic acid.


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.

Chemical 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.


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.]

Magnesium acetate Preparation Products And Raw materials

Raw materials

Preparation Products

Magnesium acetate Suppliers

Global( 130)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Henan DaKen Chemical CO.,LTD.
+86-371-55531817 CHINA 21671 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693 CHINA 20672 55
Mainchem Co., Ltd.
+86-0592-6210733 CHINA 32447 55
Tianjin Zhongxin Chemtech Co., Ltd.
022-66880086 CHINA 575 58
career henan chemical co
+86-371-86658258 CHINA 30001 58
Chemwill Asia Co.,Ltd.
86-21-51861608;;; CHINA 23980 58
Hubei Jusheng Technology Co.,Ltd.
027-59599243 CHINA 28236 58
Haihang Industry Co.,Ltd
+86 531 8582 1093 CHINA 8918 58
Xiamen AmoyChem Co., Ltd
+86 592-605 1114 CHINA 6372 58
Hubei xin bonus chemical co. LTD
027-59338440 CHINA 23049 58

View Lastest Price from Magnesium acetate manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2018-08-15 Magnesium acetate
US $1.00 / KG 1G 98% 100KG career henan chemical co

Magnesium acetate Spectrum

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