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    • Magnesium Chloride CAS 7786-30-3

    Magnesium Chloride CAS 7786-30-3

    Magnesium Chloride (CAS 7786-30-3) is a hygroscopic inorganic salt serving as a highly effective de-icing agent and a stabilizer in drilling fluid formulations. Chemically identified as Magnesium dichloride or Chloromagnesite, this colorless crystalline solid functions to lower the freezing point of water and suppress dust in mining operations. As a versatile Magnesium(II) chloride source, it is utilized in the production of Sorel cement and textile finishing agents. We ensure bulk supply capabilities for this material, providing access to competitive factory pricing and customized specifications to meet specific concentration requirements (anhydrous or hexahydrate). Full technical documentation, including MSDS, TDS, COA, is available to support compliance and safety protocols.

    • CAS: 7786-30-3
    • Synonyms: Magnesium dichloride, Magnesium(II) chloride, Chloromagnesite, Muriate of magnesium
    • Einecs: 232-094-6
    • Molecular Formula: MgCl2
    • Grade: Industrial Grade, Food Grade (Nigari), Feed Grade
    • Package: 25kg PP/PE bags, 1000kg/1200kg Jumbo bags, or custom bulk packaging.
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    Product Description

    Magnesium Chloride from Industrochem is a highly versatile inorganic salt. Our Anhydrous Magnesium Chloride (99% Flakes/Powder) is produced through advanced dehydration processes, resulting in a product with extremely low moisture and high reactivity. It is widely recognized for its superior exothermic properties during dissolution, making it more effective than traditional salts for low-temperature de-icing.
    For construction and flooring, our MgCl2 is the essential binder for Magnesium Oxychloride Cement (Sorel Cement), providing high compressive strength and fire resistance. We also supply Magnesium Chloride Hexahydrate (46% White/Yellow Flakes), which is the industry standard for dust control on unpaved roads and as a coagulant in the food industry (Nigari).

    1 Physicochemical Properties
    2 Applications
    3 Storage Conditions
    4 Safety Precautions

    Physicochemical Properties

    PropertyAnhydrous Specification (Typical)Hexahydrate Specification (Typical)
    MgCl2 Content≥ 99.0%≥ 46.0%
    AppearanceWhite Flakes / Powder / GranularWhite or Light Yellow Flakes
    Sulfate (SO4²⁻)≤ 0.3%≤ 0.5%
    Alkali Metal Chloride (as Cl⁻)≤ 0.5%≤ 0.8%
    Water Insoluble≤ 0.1%≤ 0.2%
    Calcium (Ca²⁺)≤ 0.1%≤ 0.15%
    MgO Content≤ 0.2%–
    pH (10% Solution)6.0 – 8.06.0 – 8.0
    Melting Point714 °C117 °C (Decomposes)
    Solubility in WaterHighly Soluble (Exothermic)Highly Soluble

    Applications

    1. De-icing & Anti-icing: A high-efficiency, low-corrosion road salt. It works at temperatures as low as -30°C (-22°F), significantly outperforming Sodium Chloride.
    2. Construction (Sorel Cement): Used with Magnesium Oxide to produce Magnesium Oxychloride Cement for industrial flooring, fireproof boards, and grindstones.
    3. Dust Control: Highly hygroscopic; it absorbs moisture from the air to keep road surfaces damp, effectively suppressing dust on unpaved roads and mining sites.
    4. Agriculture & Feed: Used as a magnesium supplement in fertilizers and as a nutritional additive in animal feed to prevent grass tetany.
    5. Water Treatment: Acts as a flocculant and helps in the removal of phosphorus and heavy metals in industrial wastewater.
    6. Food Industry (Nigari): Food-grade hexahydrate is used as a natural coagulant for Tofu and in mineral-enriched bottled water.
    7. Metallurgy: Used as a flux in the smelting of magnesium metal and in the production of various magnesium chemicals.

    For the hexahydrate form of this magnesium salt, see Magnesium Chloride Hexahydrate.

    Storage Conditions

    • Hygroscopic Warning: Magnesium Chloride is extremely deliquescent (absorbs moisture from air). It must be kept in a dry environment.
    • Containment: Store in original, tightly sealed moisture-proof bags.
    • Palletizing: Keep bags off the ground on pallets to prevent moisture wicking.
    • Temperature: Store in a cool, well-ventilated area away from incompatible substances (strong oxidizers).

    Safety Precautions

    • Inhalation: Avoid breathing dust. Use local exhaust or wear a dust mask (P2/N95) during handling.
    • Skin & Eye Contact: May cause mild irritation. Wear protective gloves and safety goggles. In case of contact, rinse thoroughly with water.
    • Ingestion: While generally low in toxicity, do not ingest. Wash hands before eating or smoking.
    • Handling: Use non-sparking tools. Ensure the workspace is clean to prevent slippery surfaces if the product absorbs moisture and turns into brine.

    FAQ - Technical & Supply Chain

    • Q:

      What is Magnesium Chloride CAS 7786-30-3, and which hydrated form should be quoted?

      A: Magnesium chloride is the inorganic salt MgCl2, available as anhydrous powder or as the hexahydrate flakes, granules or brine. The anhydrous form is usually quoted for high-purity or magnesium-metal processes, while the hexahydrate is the common industrial, deicing, dust-control and food-grade nigari form.
    • Q:

      Why is magnesium chloride used in Sorel cement?

      A: Magnesium chloride reacts with magnesium oxide to form magnesium oxychloride cement, often called Sorel cement. This produces a strong, quick-setting binder used in industrial flooring, fireproof boards, grinding stones and other construction products where compressive strength and fire resistance are important.
    • Q:

      What are the main non-food industrial applications?

      A: Industrial applications include road deicing and dust suppression, magnesium-metal production, Sorel cement and construction boards, textile processing, water treatment, drilling fluids, ceramics and use as a magnesium source in chemical processing.
    • Q:

      How is food-grade magnesium chloride used in tofu production?

      A: Food-grade magnesium chloride is used as a coagulant in tofu production, where it is often called nigari. The selected grade should meet the purity, heavy-metal and identity requirements for the destination food market.
    • Q:

      Which grades and packaging are available?

      A: The listing covers industrial, food and feed grades, with anhydrous and hexahydrate options. Packaging is normally 25 kg PP/PE bags, 1000 kg or 1200 kg jumbo bags, or custom bulk packaging, depending on the grade and form.
    • Q:

      What specifications should be confirmed before ordering?

      A: Confirm the exact grade, hydration state and magnesium chloride content, plus calcium, sulfate, alkali metals, heavy metals and insoluble matter. Food-grade inquiries should also confirm the grade's identity and any market-specific purity or additive requirements.

    Ordering & Documentation

    Key information for document requests, quotations, and supply planning.

    Documents

    COA, TDS, SDS/MSDS and packing details are available on request.

    Quotation

    Send the CAS number, grade, quantity, packing preference and destination.

    Sample & Supply

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    Storage & Shipping

    Product-specific conditions are confirmed before order.

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