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Magnesium Chloride Hexahydrate CAS 7791-18-6

Molecular Formula: Cl2H12MgO6

Formula Weight: 203.3

Zhishang Chemical: Magnesium Chloride Hexahydrate Supplement

Product Name: Magnesium Chloride Hexahydrate
CAS No: 7791-18-6
Purity: 99%

Basic Info

Product Name:Magnesium Chloride Hexahydrate
Other Names:Magnesium Chloride Hexahydrate Flakes
Place of Origin:Shandong, China
Brand Name:ZSpharmac
Type:Inorganic Chemical Materials
Appearance:White to Slightly Gray Solid
EINECS No.:616-575-1
Storage:Cool Dry Place

Magnesium Chloride Hexahydrate MSDS;
SigmaAldrich COA

What is Magnesium Chloride Hexahydrate?

Magnesium chloride hexahydrate, also known as hydrochlorite, is a colorless monoclinic crystal at room temperature, easy to deliquescence, with a density of 1.56g/cm3 and a melting point of 712°C. It is heated and decomposed in the air, and HCl gas is released at about 118°C and becomes chlorine. Oxygen compounds are decomposed into MgO and HCl when heated at high temperature. Use the hydration of magnesium chloride to react with alkali. At 70 °C, magnesium chloride is hydrated to magnesium chloride hexahydrate, and then excess concentrated ammonia water is added. At this time, the purity of ammonia water should be maintained. After adding ammonia water, it can be precipitated after cooling to room temperature. White flaky crystal magnesium hydroxide, the reaction equation is: MgCl2+2NH3+2H2O→Mg(OH)2+2NH4Cl.

Magnesium Chloride Hexahydrate Properties:

Melting point 117 °C
density 1.569
storage temp. 2-8°C
solubility H2O: 1 M at 20 °C, clear, colorless
form Solid
color White to slightly gray
Specific Gravity1.569
PH4.5-7.0 (50g/l, H2O, 20℃)
PH Range7
Water Solubility 2350 g/L (20 ºC)


Magnesium Chloride Hexahydrate Uses

  1. In the metallurgical industry, magnesium chloride hexahydrate is used as a binder for refractory materials and furnace walls, and as a raw material for smelting magnesium metal. In the construction industry, magnesium chloride and magnesia are used to make hard magnesia cement, which can be used to make artificial stones. In the chemical industry, it is the raw material for the manufacture of various magnesium salts. In agriculture, cotton defoliants are manufactured. The food industry is used as a coagulant for tofu.
  2. Magnesium chloride hexahydrate is used to make metal magnesium, disinfectant, fire extinguishing agent, frozen brine, and also used in ceramics, papermaking, textile and other industries.
  3. Magnesium chloride hexahydrate is used as a coagulant, and my country stipulates that it can be used in appropriate amounts in soy products according to production needs.
  4. Magnesium chloride hexahydrate is used as an analytical reagent, also used in the pharmaceutical industry, etc.

Production Method of Magnesium Chloride Hexahydrate

Seawater is concentrated to precipitate bittern after crystallization of sodium chloride. After extracting potassium chloride and bromine, it can be concentrated to make bittern. The relative density is 1.7059 (15.5℃), and the main components are: MgC1246.8%, CaCl23.42%, NaCl0. 36%, CaSO40.43%. Then after vacuum removal of bromine, atmospheric pressure evaporation to 140 ℃, after removal of impurities, cooling and the precipitation of magnesium chloride hexahydrate needle crystals, separated and then recrystallized to obtain the finished product. Or magnesium chloride can also be obtained by dissolving magnesium oxide or magnesium carbonate in hydrochloric acid. MgCO3+2HCl→MgCl2+H2O+CO2↑

About Us

The production base is located in Zhangqiu chemical industry park and Tai’an high-tech chemical industry park. laboratory and workshop in strict accordance with the GMP standard and the product fit national ISO9001 and ISO2000 standards.

“Zhishang” products are exported to Europe, North and South America, the Middle East, Asia Pacific and Africa area, so as to establish a long-term and stable cooperation relationship with customer in the world.

Company Info
  • Business Type: Manufacturer
  • Product Range: Additive , Chemical Auxiliary & Catalyst , Organic Chemicals
  • Products/Service: Organic Intermediate,Inorganic Chemistry, APIs, Dyestuffs And Pigments, Fragrance And Spices, Food Additives
  • Total Employees: 51~100
  • Capital (Million US $): 10000000RMB
  • Year Established: 2016
Production Capacity
  • No. of Production Lines : 8
  • No. of QC Staff : 5 -10 People
  • OEM Services Provided : yes
  • Factory Size (Sq.meters) : 3,000-5,000 square meters
  • Certificate: ISO9001 , CE , GMP , API , MSDS
  • Factory Location : Diao Town Industry Park, Zhangqiu City, Jinan City, Shandong Province, China.


Pre-Sales Service

* Prompt reply and 24 hours online, professional team to provide best price and high quality product.

* Sample testing support.

* Every batch of products will be tested to ensureits quality.

*The packing also can be according the customers` requirment.

*Any inquiries will be replied within 24 hours.

*we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate. If your markets have any special requirements, let us know.


After-Sales Service

*The fact of logistics information monitoring.

* Any questions about the product can be consulted at any time.

*Product has any problem can return.


Do you accept sample order?

We will make samples before mass production, and after sample approved, we’ll begin mass production. Doing 100% inspection during production, then do random inspection before packing.



You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.

What’s your MOQ?

Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.

Do you supply product report?

Yes. We’ll give you product analysis report before shipping.

  Is there a discount?

Different quantity has different discount.


1. ≤50kg, Express delivery recommended, usually called as DDU service;

2. ≤500kg, Air shipping recommended, usually called as FOB, CFR, or CIF service;

3. >500kg, sea shipping recommended, usually called as FOB, CFR, or CIF service;

4. For high value products, please select air shipping and express delivery for safe.

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