Acids & Salts Available — Bulk Only

Magnesium Chloride

MgCl2
CAS 7786-30-3 · Formula Cl2Mg · MW 95.21 g/mol

A versatile magnesium salt spanning de-icing brines, oxychloride cements, and nutrient supply. It is used for road de-icing and dust control, as the reactive component in magnesium oxychloride (Sorel) cement and wallboard, and as a magnesium source in fertilizers and animal feed.

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HS Code
2827.31
At a Glance
Material Family
Acids & Salts
Record Type
Pure compound
Primary Role
Viscosity Modification · Moisture Control
Functional Roles
Viscosity Modification Moisture Control
INCI Name
MAGNESIUM CHLORIDE
CosIng Functions
VISCOSITY CONTROLLING
Industries Served
Beauty & Personal Care Industrial Manufacturing Oil & Gas Textiles Water Treatment
Applications & Use Cases
  • ▸ De-icing and dust control: Brine for roads and unpaved surfaces.
  • ▸ Oxychloride cement: Reactive salt for Sorel cement and wallboard.
  • ▸ Fertilizer and feed: Magnesium source for crops and livestock.
  • ▸ Boiler scale control: Used as a scale-control additive.
Physical Properties
Physical Description
Liquid; Water or Solvent Wet Solid; Dry Powder; Other Solid; Dry Powder, Other Solid; Pellets or Large Crystals; Pellets or Large Crystals, Other Solid; Dry Powder, Pellets or Large Crystals
Appearance
Thin white to gray granules and/or flakes
Boiling Point
1,412 °C
Melting Point
712 °C (rapid heating)
Solubility
In methanol, 15.5 g/100 g @ 0 °C, 20.4 g/100 g @ 60 °C; in ethanol, 3.61 g/100 g @ 0 °C, 15.89 g/100 g @ 60 °C
Density
2.3 g/cm³
Refractive Index
INDEX OF REFRACTION: 1.675, 1.59
Safety & Handling
Full SDS available on request

A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.

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HS / Tariff Classification
Harmonized System (HS) Code — 6-digit international heading
2827 . 31
Chapter 28
Inorganic chemicals; compounds of precious metals and rare-earth metals
Heading 28.27
Internationally harmonized (WCO HS)
Subheading 2827.31
6-digit international code — national tariff line adds further digits
Chemical Identity
CAS Number
7786-30-3
Molecular Formula
Cl2Mg
Molecular Weight
95.21 g/mol
IUPAC Name
magnesium dichloride
INCI Name
MAGNESIUM CHLORIDE
PubChem CID
5360315
InChI Key
TWRXJAOTZQYOKJ-UHFFFAOYSA-L
Synonyms & Trade Names
MAGNESIUM CHLORIDE Magnesium dichloride Magnesium chloride anhydrous Anhydrous magnesium chloride Chloride, Magnesium Fibro Flex Cramp-Z GZE Magnesium Oil Bestmade Natural Products Mag Mur MgCl2 Aerotex Accelerator MX Bischofite Bischofite (mgcl2.6h2o) E-511 INS NO.511 INS-511
Full Description

Magnesium chloride (CAS 7786-30-3, MgCl2) is a deliquescent inorganic salt. It is used for road de-icing and dust control, as the reactive component in magnesium oxychloride (Sorel) cement and wallboard, and as a magnesium source in fertilizers and animal feed.

Frequently Asked Questions

What is the use of magnesium chloride?

Magnesium chloride (CAS 7786-30-3, MgCl2) is used for road de-icing and dust control as a brine, as the reactive component in magnesium oxychloride (Sorel) cement and wallboard, and as a magnesium source in fertilizers and animal feed. It also serves as a boiler scale-control additive.

What is the chemical formula for magnesium chloride?

Magnesium chloride is MgCl2 (CAS 7786-30-3), a deliquescent inorganic salt. It is also available in hydrated forms; confirm the specific hydrate and assay on the product specification.

Is magnesium chloride water soluble?

Yes. Magnesium chloride is a highly water-soluble, deliquescent salt, which is why it is used as a de-icing and dust-control brine. Its hygroscopic nature should be accounted for in storage and handling.

What is the HS code for magnesium chloride?

Magnesium chloride classifies under HS 2827.31 (chlorides of magnesium). Use this code for customs documentation; verify against your jurisdiction's current tariff schedule.

How is bulk magnesium chloride supplied and priced?

It is supplied in bulk for de-icing, construction, fertilizer, feed, and water-treatment applications. Pricing depends on grade, volume, and packaging (bags, totes, or bulk); request a bulk quote with CoA and SDS for current pricing.

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Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.

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