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Magnesium chloride

General Description Uses
Magnesium chloride
Magnesium chloride structure
Chemical Name:
Magnesium chloride
dus-top;Slow-Mag;Lys, TMS;Magnogene;Chloromagnesite;Magnesiumchlorid;MgCl2(anhydrous);SUPERBROTH POWDER;Magnesium choride;Magnesium chloride
Molecular Formula:
Formula Weight:
MOL File:

Magnesium chloride Properties

Melting point:
714 °C (lit.)
Boiling point:
1412 °C/1 atm (lit.)
2.32 g/mL at 25 °C (lit.)
refractive index 
n20/D 1.336
storage temp. 
H2O: soluble
Specific Gravity
5.0-7.5 (25℃, 1M in H2O)
Water Solubility 
400 G/L (20 ºC)
λ: 260 nm Amax: 0.05
λ: 280 nm Amax: 0.03
CAS DataBase Reference
7786-30-3(CAS DataBase Reference)
184.1426; 177.1650
Substances Added to Food (formerly EAFUS)
SCOGS (Select Committee on GRAS Substances)
Magnesium chloride
EWG's Food Scores
NIST Chemistry Reference
Magnesium dichloride(7786-30-3)
EPA Substance Registry System
Magnesium chloride (7786-30-3)
  • Risk and Safety Statements
Hazard statements  H303-H341
Precautionary statements  P201-P202-P280-P308+P313-P405-P501a
Hazard Codes  Xi
Risk Statements  36/37/38-43-36/37
Safety Statements  26-36-24/25-22-36/37-39
WGK Germany  1
RTECS  OM2800000
HS Code  28273100
Toxicity LD50 orally in Rabbit: 2800 mg/kg
NFPA 704
2 1

Magnesium chloride price More Price(54)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich M8787 Magnesium chloride solution PCR Reagent, 25 mM MgCI2 solution for PCR 7786-30-3 1 vial $25.9 2021-03-22 Buy
Sigma-Aldrich 8.14733 Magnesium chloride anhydrous for synthesis 7786-30-3 100 g $49.12 2021-03-22 Buy
Sigma-Aldrich 208337 Magnesium chloride powder, <200 μm 7786-30-3 1kg $55 2021-03-22 Buy
Sigma-Aldrich 00457 Magnesium chloride solution 0.1 M 7786-30-3 1ml-f $62 2020-08-18 Buy
Sigma-Aldrich 00457 Magnesium chloride solution 0.1?M 7786-30-3 1 mL $64.2 2021-03-22 Buy

Magnesium chloride Chemical Properties,Uses,Production

General Description

Magnesium chloride,MgCI2,also known as chloromagnesite, is a colorless crystalline solid. It is soluble in water and alcohol and is used in the ceramic and textile industries. Magnesium chloride is formed by heating hydrated magnesium chloride crystals in a current of dry hydrogen chloride or by heating magnesium ammonium chloride. Hydrated magnesium chloride, MgCI2·6H20 , also known as bischophite,is a white deliquescent solid formed by the reaction of magnesium carbonate(or hydroxide,oxide or metal)and hydrogen chloride. It is used in disinfectants, fire extinguishers, and paper manufacture.
magnesium chloride flakes
magnesium chloride flakes


Chemical manufacture
Manufacturer of  magnesium metal and other magnesium compounds
Source of magnesium
Road maintenance
Dust control
Moisture absorbed from the air prevents dust formation
Snow and ice control
De-icing agent/helps to prevent the ice bond on the road and to remove ice buildup from road
Treating or preventing magnesium deficiency
Source of magnesium/helps to raise magnesium levels in the body
Coagulant agent/helps liquid forms of soy to solidify into tofu
Baby formula milk
Gas storage
Storage of Hydrogen Gas
Storage material/effectively absorbs ammonia which is rich in hydrogen atoms
Manufacturer of Sorel cement
Raw material/Mixed with hydrated magnesium oxide to form hard material
Fire extinguishers
Effective reactant
Paper filling
Fire retardant
Textile filling
Keeps the humidity of cotton to make it soft
Source of magnesium
Mineral supplement for animals
Refrigeration brine and artificial seawater
Waste water treatment
Effective ingredient
Anesthesia for cephalopods, crustaceans and bivalve
Polymerase chain reaction
Necessary for both in vivo/vitro DNA synthesis

Chemical Properties

Magnesium is an essential nutrient for plants and animals and is a natural constituent of fruits, vegetables, grain, meats and sea-foods. It is the fourth most abundant cation in the human body and the second most plentiful intracellularly. The average 60-kg human adult body contains about 24 g magnesium of which about one-half resides in bone. Although plasma levels vary between 1.7 and 3.0 mg per dl, very little is contained in extracellular fluid. Magnesium is essential for the production and transfer of energy, for protein, fat, and nucleic acid synthesis, for contractility in muscle and excitability in nerve, and for the activity of numerous enzyme systems.


MgCl2, is one of the primary constituents of seawater and occurs in most natural brines and salt deposits formed from the evaporation of seawater.


Magnesium chloride is used for a variety of other applications besides the production of Mg metal. It is used in the manufacture of textiles, paper, fireproofing agents, cements and refrigeration brine. It has also been used in dust and erosion control. Mixed with hydrated magnesium oxide, magnesium chloride forms a hard material called “Sorel-cement”. The cement is a mixture of MgO (burnt magnesia) with MgCl2 with the approximate chemical formula Mg4Cl2(OH)6(H2O)8, corresponding to a weight ratio of 2.5–3.5 parts MgO to one part MgCl2. This usage of magnesium chloride is unmatched by any other compound. MgCl2 was one of the earlier antiseptics, first used for that purpose by Dr Pierre Delbert in 1915. One veterinary study in 1989 indicated some effectiveness against tumors when used as a feed additive.
A commercial form of liquid MgCl2 called DustGard Liquid is used to control dust on unpaved roads, construction sites and similar surfaces. Because it is produced from naturally occurring minerals, it improves air quality and visibility with minimal environmental impact. It also decreases vehicle maintenance costs, prevents soil erosion and reduces the need for blading, watering and gravel replacement.
Magnesium chloride is also used in several medical and topical (skin-related) applications. It has been used in pills as supplemental sources of magnesium, where it serves as a soluble compound which is not as laxative as MgSO4, and more bio-available than Mg(OH)2 and MgO, since it does not require stomach acid to produce soluble Mg2+ ion. It can also be used as an effective anesthetic for cephalopods, some species of crustaceans, and several species of bivalves, including oysters.
Magnesium chloride is an important coagulant used in the preparation of “tofu” from soy milk. In Japan, it is sold as “Nigari”, (derived from the Japanese word for “bitter"). It is a white powder produced from seawater after the sodium chloride has been removed, and the water evaporated. In China, it is called "Lushui”,Nigari or Lushui and consists mostly of magnesium chloride, with some MgSO4 and other trace elements. It is also an ingredient in baby formula milk.
Magnesium chloride has shown promise as a storage material for hydrogen gas. Ammonia can be effectively adsorbed onto solid magnesium chloride, forming Mg(NH3)6Cl2. When the ammonia is released by mild heat, and is then passed through a catalyst, hydrogen gas is retrieved.


An excellent magnesium ion source for synthesis and biology research


Magnesium Chloride is a source of magnesium, a color-retention agent, and firming agent. it exists as colorless flakes or crystals and is very soluble in water.


magnesium chloride: A white solid compound, MgCl2. The anhydrous salt (hexagonal; r.d. 2.32; m.p.714°C; b.p. 1412°C) can be prepared by the direct combination of dry chlorine with magnesium:
Mg(s) + Cl2(g) → MgCl2(s)
The compound also occurs naturally as a constituent of carnallite(KCl.MgCl2). It is a deliquescent compound that commonly forms the hexahydrate, MgCl2.6H2O (monoclinic;r.d. 1.57). When heated, this hydrolyses to give magnesium oxide and hydrogen chloride gas. The fused chloride is electrolysed to produce magnesium and it is also used for fireproofing wood, in magnesia cements and artificial leather, and as a laxative.


ChEBI: Magnesium chloride is a magnesium salt comprising of two chlorine atoms bound to a magnesium atom.


In the “Dow Process” (which is the electrolytic method of extracting bromine from brine), magnesium chloride is regenerated from magnesium hydroxide by hydrochloric acid:
It can also be prepared from MgCO3 by a similar reaction. Magnesium chloride is ionic and so will undergo electrolysis when it is molten. Electricity is carried by the movement of the ions within the melt and their discharge at the electrodes. However, solid magnesium chloride is a nonconductor of electricity because the ions are immobile.


Toxic by ingestion.

Magnesium chloride Preparation Products And Raw materials

Raw materials

Preparation Products

Magnesium chloride Suppliers

Global( 330)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Qingdao Trust Agri Chemical Co.,Ltd
13573296305 008613573296305
0532-87927000 CHINA 182 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693 CHINA 22607 55
Shanghai Time Chemicals CO., Ltd.
+8618017249410 +86-021-57951555
+86-021-57951555 CHINA 1365 55
Hangzhou FandaChem Co.,Ltd.
+86-571-56059825 CHINA 8882 55
Hefei TNJ Chemical Industry Co.,Ltd.
86-0551-65418684 18949823763
86-0551-65418684 China 3001 55
Shanxi Naipu Import and Export Co.,Ltd
+8613734021967 CHINA 1011 58
career henan chemical co
+86-371-86658258 CHINA 29961 58
Hebei Zhuangkai Biotechnology Co.,Ltd.
0311-89850048 China 299 58
Hubei Jusheng Technology Co.,Ltd.
027-59599243 CHINA 28229 58
Hebei Guanlang Biotechnology Co., Ltd.
+8619930503282 China 5429 58

View Lastest Price from Magnesium chloride manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2021-08-14 Magnesium chloride
US $42.00 / KG 1g 99.9% 500000kgs Shijiazhuang tongyang Import and Export Co., LTD
2021-07-13 Magnesium chloride
US $15.00-10.00 / KG 1KG 99%+ HPLC Monthly supply of 1 ton Zhuozhou Wenxi import and Export Co., Ltd
2021-07-10 Magnesium chloride
US $15.00-10.00 / KG 1KG 99%+ HPLC Monthly supply of 1 ton Zhuozhou Wenxi import and Export Co., Ltd

Magnesium chloride Spectrum

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