MAGNESIUM CHLORIDE

Magnesium Chloride is an inorganic magnesium salt widely used as a source of magnesium ions, a de-icing and dust-control agent, and a multifunctional component in industrial, food, pharmaceutical, and personal care applications.
Magnesium Chloride is commonly supplied as anhydrous Magnesium Chloride or as Magnesium Chloride hexahydrate, and Magnesium Chloride is highly water soluble and strongly hygroscopic.
Magnesium Chloride is valued for high solubility, effective performance as a magnesium source and brine-forming salt, and broad utility across processes, but Magnesium Chloride requires moisture-protected storage and compatible materials due to corrosion risk in some environments.

CAS Number: 7786-30-3 (anhydrous) / 7791-18-6 (hexahydrate)
EC Number: 232-094-6
Molecular Formula: MgCl2 (anhydrous) / MgCl2·6H2O (hexahydrate)
Molecular Weight: 95.21 g/mol (anhydrous) / 203.30 g/mol (hexahydrate)

Synonyms: Magnesium Chloride, MgCl2, Magnesium Chloride Anhydrous, Magnesium Chloride Hexahydrate, Magnesium Dichloride, Magnesium Salt of Hydrochloric Acid, Magnesium Chloride Flakes, Magnesium Chloride Brine, Food Grade Magnesium Chloride, Pharmaceutical Magnesium Chloride, Magnesium Chloride USP, Magnesium Chloride Technical Grade, Magnesium Chloride, MgCl2, Magnesium Chloride Anhydrous, Anhydrous Magnesium Chloride, Magnesium Chloride Hexahydrate, Magnesium Chloride 6-Hydrate, Magnesium Chloride Hexahydrate Crystals, Magnesium Chloride Flakes, Magnesium Chloride Pellets, Magnesium Chloride Granules, Magnesium Chloride Powder, Magnesium Chloride Brine, Magnesium Chloride Solution, Magnesium Chloride Aqueous Solution, Magnesium Chloride Concentrate, Magnesium Chloride Technical Grade, Magnesium Chloride Industrial Grade, Magnesium Chloride Food Grade, Magnesium Chloride Pharmaceutical Grade, Magnesium Chloride USP, Magnesium Chloride EP, Magnesium Chloride BP, Magnesium Chloride FCC, Magnesium Chloride Reagent, Magnesium Chloride Analytical Grade, Magnesium Chloride Laboratory Grade, Magnesium Chloride High Purity, Magnesium Chloride 98%, Magnesium Chloride 99%, Magnesium Chloride (CAS 7786-30-3), CAS 7786-30-3, Magnesium Chloride (EINECS 232-094-6), EC 232-094-6, Magnesium Chloride (E511), E511, E 511, INS 511, Magnesium Dichloride, Magnesium(II) Chloride, Magnesium Chloride (Magnesium(II) Chloride), Magnesium Chloride Salt, Chloride of Magnesium, Mag Chloride (common abbreviation), MgCl2·6H2O

APPLICATIONS

Magnesium Chloride is used as a de-icing agent to melt snow and ice by forming brines with low freezing points.
Magnesium Chloride is incorporated into road de-icing blends to improve performance at lower temperatures compared to some other salts.
Magnesium Chloride is used in pre-wetting and anti-icing treatments to reduce salt bounce and improve adhesion to road surfaces.

Magnesium Chloride is used for dust control on unpaved roads by جذب moisture from the air and binding fine particles.
Magnesium Chloride is incorporated into industrial yards and mining roads to reduce airborne dust and improve surface stability.
Magnesium Chloride is used in construction sites to control dust and improve working conditions.

Magnesium Chloride is used in oil and gas operations as a brine component for drilling and completion fluids in compatible systems.
Magnesium Chloride is incorporated into brine formulations to adjust density and ionic composition.
Magnesium Chloride is used in process fluids where magnesium ions provide specific functional effects.

Magnesium Chloride is used in wastewater treatment to support phosphorus removal and improve coagulation in compatible processes.
Magnesium Chloride is incorporated into treatment programs to aid struvite formation and nutrient management.
Magnesium Chloride is used in industrial effluent control to adjust ionic strength and process chemistry.

Magnesium Chloride is used in food processing as a coagulant for tofu production in many traditional and industrial methods.
Magnesium Chloride is incorporated into soy milk coagulation to form tofu curd with specific texture profiles.
Magnesium Chloride is used in specialty food applications as a firming agent where permitted and properly specified.

Magnesium Chloride is used as a source of magnesium in dietary supplements and fortification products in appropriate salt forms and specifications.
Magnesium Chloride is incorporated into electrolyte powders and sports drinks where magnesium replenishment is targeted.
Magnesium Chloride is used in mineral drops and liquid supplements where high solubility supports formulation design.

Magnesium Chloride is used in pharmaceutical formulations as a magnesium source and electrolyte component in compatible products.
Magnesium Chloride is incorporated into IV and clinical solutions where electrolyte balance is managed under medical specifications.
Magnesium Chloride is used in compounding and reagent preparation where controlled magnesium ion concentration is required.

Magnesium Chloride is used in personal care products such as bath salts and bath flakes to provide mineral-rich bathing experiences.
Magnesium Chloride is incorporated into body sprays and topical magnesium products where magnesium salt claims are targeted.
Magnesium Chloride is used in deodorant formulations where salt effects and ionic strength are leveraged in compatible systems.

Magnesium Chloride is used in concrete and cement applications as an accelerator and as a component in magnesium oxychloride cement systems.
Magnesium Chloride is incorporated into specialty flooring and repair materials where fast setting and strength development are desired.
Magnesium Chloride is used in refractory and industrial building materials where magnesium-based binders are employed.

Magnesium Chloride is used as a precursor to produce magnesium metal and other magnesium salts in chemical manufacturing.
Magnesium Chloride is incorporated into catalyst preparation and inorganic synthesis where magnesium sources are required.
Magnesium Chloride is used in laboratory chemistry as a general inorganic salt and drying or salting-out component in compatible workflows.

Magnesium Chloride is used in textile and paper processing where salt effects support dyeing, finishing, and process control in selected systems.
Magnesium Chloride is incorporated into process baths where ionic strength and magnesium ions affect performance.
Magnesium Chloride is valued because Magnesium Chloride provides highly soluble magnesium ions and effective brine behavior across many industrial and consumer applications.

Magnesium Chloride is used as a de-icing and anti-icing agent for roads, bridges, and sidewalks.
Magnesium Chloride lowers the freezing point of water and improves winter maintenance performance.
Magnesium Chloride helps reduce ice bonding and improves traction management on treated surfaces.

Magnesium Chloride is used for dust control on unpaved roads and construction sites.
Magnesium Chloride attracts moisture from the air and helps keep road surfaces damp.
Magnesium Chloride reduces airborne dust and improves visibility and air quality.

Magnesium Chloride is used in oil and gas operations as a brine component for drilling and completion fluids.
Magnesium Chloride helps adjust fluid density and ionic strength in certain brine systems.
Magnesium Chloride supports wellbore stability and fluid performance in specific applications.

Magnesium Chloride is used in hydraulic fracturing support operations as part of water chemistry control.
Magnesium Chloride helps manage scale tendency and ionic balance in selected systems.
Magnesium Chloride supports compatibility of additives in high-salinity formulations.

Magnesium Chloride is used in the production of magnesium metal and other magnesium compounds.
Magnesium Chloride serves as a key feedstock for electrolytic magnesium production.
Magnesium Chloride supports manufacturing of magnesium oxide, magnesium hydroxide, and specialty salts.

Magnesium Chloride is used in cement and construction materials, including magnesium oxychloride cement systems.
Magnesium Chloride helps form binding phases that contribute to fast setting and hardness.
Magnesium Chloride supports specialized flooring, panels, and fire-resistant building products.

Magnesium Chloride is used in concrete admixture and curing contexts where chloride use is acceptable.
Magnesium Chloride can accelerate setting in certain mixtures under controlled conditions.
Magnesium Chloride supports cold-weather construction strategies in limited, compliant applications.

Magnesium Chloride is used in textile processing as a catalyst or electrolyte in certain dyeing and finishing steps.
Magnesium Chloride helps improve dye fixation in selected reactive dye systems.
Magnesium Chloride supports consistent processing by controlling ionic strength.

Magnesium Chloride is used in paper manufacturing to support process chemistry and retention control in some systems.
Magnesium Chloride helps adjust conductivity and ionic balance in wet-end operations.
Magnesium Chloride supports stable papermaking performance in certain formulations.

Magnesium Chloride is used in food processing as a firming agent where permitted and properly specified.
Magnesium Chloride is used in tofu production as a coagulant known as nigari in traditional processes.
Magnesium Chloride helps coagulate soy proteins and create desired tofu texture.

Magnesium Chloride is used in dairy processing research to adjust mineral balance and protein interactions.
Magnesium Chloride supports studies on casein micelle behavior and gelation.
Magnesium Chloride helps tune texture in experimental dairy formulations.

Magnesium Chloride is used in dietary supplements as a source of magnesium.
Magnesium Chloride supports formulations such as capsules, tablets, and liquid mineral drops.
Magnesium Chloride is used in electrolyte products to support hydration concepts.

Magnesium Chloride is used in medical and clinical settings to correct magnesium deficiency under professional supervision.
Magnesium Chloride is used in certain infusion and injectable preparations in controlled healthcare use.
Magnesium Chloride supports electrolyte management protocols when appropriately prescribed.

Magnesium Chloride is used in bath salts and personal care products for mineral bath concepts.
Magnesium Chloride supports soaking products positioned for relaxation and muscle comfort.
Magnesium Chloride helps increase mineral content and ionic strength in bath formulations.

Magnesium Chloride is used in cosmetic formulations as a viscosity and sensory modifier in some systems.
Magnesium Chloride helps adjust rheology in surfactant-based products by influencing micelle structure.
Magnesium Chloride supports improved foam and feel in certain cleansers when properly balanced.

Magnesium Chloride is used in antiperspirant and deodorant formulation research as a mineral salt component.
Magnesium Chloride supports odor-control concepts in mineral-based deodorant products.
Magnesium Chloride helps influence skin feel and formulation stability in certain prototypes.

Magnesium Chloride is used in aquarium and marine systems to maintain magnesium levels.
Magnesium Chloride supports coral growth and seawater chemistry in reef aquariums.
Magnesium Chloride helps balance alkalinity and calcium behavior in marine tanks.

Magnesium Chloride is used in water treatment to adjust hardness and support coagulation in certain processes.
Magnesium Chloride helps provide magnesium ions that influence precipitation and floc formation.
Magnesium Chloride supports treatment strategies in industrial water systems under specific conditions.

Magnesium Chloride is used in wastewater treatment to aid phosphorus removal in some configurations.
Magnesium Chloride supports struvite precipitation strategies when combined with phosphate and ammonia control.
Magnesium Chloride helps reduce nutrient discharge by enabling controlled precipitation.

Magnesium Chloride is used in chemical laboratories as a drying and salting-out agent in some procedures.
Magnesium Chloride supports ionic strength adjustment in aqueous-organic extraction systems.
Magnesium Chloride helps control reaction conditions where magnesium ions are relevant.

Magnesium Chloride is used as a catalyst support and precursor in chemical synthesis.
Magnesium Chloride supports preparation of magnesium-based catalysts and Grignard-related reagent systems indirectly.
Magnesium Chloride helps control Lewis acidity in certain catalytic environments.

Magnesium Chloride is used in the production of Ziegler–Natta catalyst components for polypropylene and polyethylene.
Magnesium Chloride serves as a support for titanium-based catalyst species in many catalyst technologies.
Magnesium Chloride supports high-activity polymerization catalyst performance and morphology control.

Magnesium Chloride is used in metalworking fluids to adjust water chemistry and conductivity in some systems.
Magnesium Chloride supports corrosion-control programs when properly inhibited and formulated.
Magnesium Chloride helps stabilize emulsions or performance in selected metalworking applications.

DESCRIPTION

Magnesium Chloride is typically a white to off-white crystalline solid supplied as flakes, granules, or powder, and Magnesium Chloride hexahydrate is the most common commercial form.
Magnesium Chloride is strongly hygroscopic and readily absorbs moisture, which can lead to caking and brine formation during storage if not properly sealed.
Magnesium Chloride dissolves exothermically in water and produces solutions with high ionic strength that can influence corrosion and material compatibility.

Magnesium Chloride is widely used in de-icing because Magnesium Chloride forms concentrated brines that remain liquid at low temperatures.
Magnesium Chloride is often preferred for dust control because Magnesium Chloride جذب moisture and keeps road surfaces damp, reducing particle lift.
Magnesium Chloride should be used with corrosion management strategies in applications involving metals, especially carbon steel, because chloride salts can accelerate corrosion.

Magnesium Chloride quality varies by intended use, and food and pharmaceutical grades require strict impurity limits and documentation.
Magnesium Chloride should be stored in tightly closed containers away from humidity to maintain flowability and consistent concentration.
Magnesium Chloride solutions should be prepared with appropriate mixing, concentration control, and compatibility checks for downstream processes.

PROPERTIES

Chemical Formula: MgCl2 (anhydrous) / MgCl2·6H2O (hexahydrate)
Molecular Weight: 95.21 g/mol (anhydrous) / 203.30 g/mol (hexahydrate)
Common Name: Magnesium Chloride
Chemical Type: Inorganic chloride salt
Appearance: White to off-white crystals, flakes, granules, or powder
Odor: Odorless
Solubility: Very soluble in water; soluble in ethanol to a limited extent (grade dependent)
Hygroscopicity: Strongly hygroscopic; readily absorbs moisture and can form brine
Melting Point: ~714°C (anhydrous; typical) / ~117°C (hexahydrate; decomposes)
Density: ~2.3 g/cm³ (anhydrous; typical) / ~1.6 g/cm³ (hexahydrate; typical)
pH (aqueous solution): Typically slightly acidic to neutral (concentration dependent)
Corrosivity: Chloride solutions can be corrosive to many metals (system dependent)
Stability: Stable under dry conditions; reacts with moisture and heat depending on hydration state
Storage Temperature: 15–25°C, dry, tightly closed, protected from humidity
Shelf Life: Typically 24–36 months in original sealed packaging (supplier dependent)

FIRST AID

Inhalation:
Move to fresh air if dust is inhaled.
Seek medical attention if respiratory irritation persists.
Avoid breathing dust during handling and transfer.

Skin Contact:
Wash with soap and water after contact.
Remove contaminated clothing and wash before reuse.
Seek medical advice if irritation develops or persists, especially with concentrated solutions.

Eye Contact:
Rinse cautiously with water for several minutes.
Remove contact lenses if present and easy to do, then continue rinsing.
Seek medical attention if irritation persists.

Ingestion:
Rinse mouth with water.
Seek medical attention if a large amount is swallowed or if discomfort occurs.
Never give anything by mouth to an unconscious person.

Note to Physicians:
Treat symptomatically.
Monitor for electrolyte imbalance if significant ingestion is suspected.
Provide supportive care based on exposure route and symptoms.

HANDLING AND STORAGE

Handling:
Use appropriate PPE including gloves and safety glasses.
Avoid generating dust and avoid prolonged contact with concentrated solutions.
Wash hands after handling and before eating, drinking, or smoking.

Ventilation:
Use local exhaust or general ventilation where dust may be generated.
Maintain good airflow during charging, mixing, and packaging operations.
Minimize airborne particulate accumulation in enclosed areas.

Storage:
Store in tightly closed, moisture-resistant containers in a cool, dry place.
Protect from humidity to prevent caking, liquefaction, and concentration drift.
Keep away from incompatible materials and manage contact with metals to reduce corrosion risk.

Spill and Leak Procedures:
Avoid dust generation and sweep or vacuum using equipment designed for fine powders.
For solutions, contain and absorb with inert material and rinse area with water as appropriate.
Dispose of waste according to local regulations and facility procedures.

Handling Precautions:
Use corrosion management practices in brine applications, including compatible materials and inhibitors when needed.
Verify grade and impurity specifications for food, pharmaceutical, or cosmetic use before application.
Rotate stock using FIFO practices and keep containers tightly sealed to maintain consistent quality.