| CAS No.: | 7791-18-6 |
|---|---|
| Formula: | Mgcl2 |
| EINECS: | 232-094-6 |
| Certification: | CE, RoHS, ISO |
| Purity: | 80%~90% |
| Type: | Magnesium Chloride |
| Samples: |
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| Customization: |
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Audited Supplier Magnesium chloride is the name for the chemical compound with the formula MgCl2 and its various hydrates MgCl2(H2O)x. Anhydrous MgCl2 contains 25.5% elemental magnesium by mass. These salts are typical ionic halides, being highly soluble in water. The hydrated magnesium chloride can be extracted from brine or sea water. In North America, magnesium chloride is produced primarily from Great Salt Lake brine. It is extracted in a similar process from the Dead Sea in the Jordan Valley. Magnesium chloride, as the natural mineral bischofite, is also extracted (by solution mining) out of ancient seabeds, for example, the Zechstein seabed in northwest Europe. Some magnesium chloride is made from solar evaporation of seawater. Anhydrous magnesium chloride is the principal precursor to magnesium metal, which is produced on a large scale. Hydrated magnesium chloride is the form most readily available.
Several hydrates are known with the formula MgCl2(H2O)x, and each loses water at higher temperatures: x = 12 (−16.4 °C), 8 (−3.4 °C), 6 (116.7 °C), 4 (181 °C), 2 (about 300 °C). In the hexahydrate, the Mg2+ is also octahedral, but is coordinated to six water ligands. The thermal dehydration of the hydrates MgCl2(H2O)x (x = 6, 12) does not occur straightforwardly. Anhydrous MgCl2 is produced industrially by heating the chloride salt of hexammine complex [Mg(NH3)6]2+.
As suggested by the existence of some hydrates, anhydrous MgCl2 is a Lewis acid, although a weak one.
In the Dow process, magnesium chloride is regenerated from magnesium hydroxideby acid:
Mg(OH)2(s) + 2 HCl(aq) → MgCl2(aq) + 2 H2O(l)
It can also be prepared from magnesium carbonate by a similar reaction.
Derivatives with tetrahedral Mg2+ are less common. Examples include salts of (N(C2H5)4)2MgCl4 and adducts such as MgCl2(TMEDA).
Magnesium chloride (E511) 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"), 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 Iushui is, in fact, natural magnesium chloride, meaning that it is not completely refined (it contains up to 5% magnesium sulfate and various minerals). The crystals originate from lakes in the Chinese province of Qinghai, to be then reworked in Japan. Millions of years ago, this region was home to an ancient ocean that gradually dried up and of which only salty lakes with brackish water saturated with salt where magnesium chloride crystallizes remain today.
It is an inexpensive dietary supplement providing magnesium, hence its interest in view of a general deficit in our current consumption (to be in full health, the human body must in particular benefit from a balance between calcium and magnesium). It is also an ingredient in baby formula milk.
| Item | White food grade | White tech grade | Refined tech grade |
| MgCl2 | 46.4%min | 46.4%min | 46%min |
| Ca | 0.1%max | 0.4%max | 0.9%max |
| SO4- | 0.4%max | 0.5%max | 2.5%max |
| Water insoulbe | 0.1%max | 0.2%max | 0.2%max |
| PH | 7-9 | 7-9 | 7-9 |
| As | 0.5ppm max | ----- | ----- |
| Pb | 1ppm max | ------ | ------ |
| NH4 | 50ppm max | ------ | ------- |
Weifang QingTong Chemical Co., Ltd. is located in China's marine chemical industry base - Weifang, Shandong. Our company mainly engaged in producing Industrial Salt(refined salt & water washed salt & PDV salt), Edible Salt, , Calcium Chloride, Magnesium Chloride,Sodium Citrate and Snow Melters. The main products are sold to Taiwan, Japan,Korea and other countries and regions. The company has senior and middle-level engineers and scientific and technological talents, as well as product inspection and testing laboratory equipment and full-time quality inspection and laboratory personnel. Provide pre-production, in-production and post-production tracking and quantitative testing services for the production and processing.
Our company is located in Binhai Development Zone,,Weifang--the three major resource accumulation and dispersal areas of sodium, magnesium and calcium in the country. We are willing to cooperate extensively with customers at home and abroad with high reputation, excellent quality and reasonable price.
1.What are your payment terms?
For our first cooperate client,usually 100% TT 30% before shipment.If you be our regular client, payment term can adjust.
2.What is your delivery time?
It depends on order quantity,usually we will arrange shipment within 3-20days.
3.How about packing?
Usually we provide packing as 25kg/bag or carton.Of course,if you have special requirment for packing,we will adjust according to you.
4.When can I get reply?
Our sales manager will contact you within 24hours.
5.How about the validity of products?
According to the products you order,usually 2 years.
6.What documents do you provide?
Usually we provide Commercial Invioce,Packing List, Bill of Loading, and Original Certificate,etc.If there are any special requierments in your market,please let us know.
7.Can I get sample before order?
Yes,we can provide free sample once price is agreed,and you just need to pay us delivery fee in advance.
8.Where is your loading port?
Usually QINGDAO port.
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