Magnesium Chloride

Industrial Grade · Flakes · Powder — Bulk supply across India & International Markets

What is Magnesium Chloride?

Magnesium Chloride (MgCl₂) is an inorganic salt that occurs naturally in seawater and brine. It is available in anhydrous form as well as various hydrated forms, most commonly the hexahydrate (MgCl₂·6H₂O), which appears as white or colourless flakes or granules. It is highly soluble in water and has a wide range of industrial, agricultural, and food applications.

Polychem Industries supplies Magnesium Chloride in industrial grade to manufacturers, distributors, and procurement teams across India and internationally. Its versatility across dust control, de-icing, food processing, and industrial applications makes it one of the most in-demand chemicals in our catalog.

Available Grades

Grade Form Purity Standard Applications
Industrial Grade Flakes / Powder / Granules ≥ 95% Industrial Dust control, de-icing, construction, industrial processes
Food Grade Flakes / Powder ≥ 99% FCC / FSSAI Tofu coagulant, food processing, nutritional supplements
Technical Grade Flakes / Solution ≥ 97% Technical Chemical synthesis, textile, water treatment

Applications & Uses

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Dust Control & De-icing

One of the most effective dust suppressants for unpaved roads, mining sites, and industrial yards. Also widely used for de-icing roads and pavements in cold climates as it works at lower temperatures than sodium chloride.

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Food Processing

Food grade Magnesium Chloride (known as Nigari) is used as a coagulant in tofu production. It is also used as a mineral supplement and firming agent in various food products.

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Construction & Flooring

A key component in magnesium oxychloride cement (Sorel cement) used in industrial flooring, fire-resistant panels, and construction boards. Provides excellent hardness and durability.

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Agriculture

Used as a source of magnesium in fertilisers to correct magnesium deficiency in soils. Magnesium is essential for chlorophyll production and plant growth.

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Water Treatment

Used in wastewater treatment as a coagulant and in the removal of phosphates and other contaminants from industrial effluents.

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Textile Processing

Used in textile finishing as a weighting agent for silk and synthetic fabrics, and in the dyeing process as a fixing agent.

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Fire Retardant Products

Used in the manufacture of fire-resistant building boards, panels, and coatings due to its non-combustible properties and heat resistance.

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Chemical & Industrial Processes

Used as a raw material in the production of magnesium metal and other magnesium compounds, and as a catalyst in various chemical synthesis processes.

Technical Specifications

Magnesium Chloride — Key Properties

Chemical Formula MgCl₂ (anhydrous) / MgCl₂·6H₂O (hexahydrate)
Molecular Weight 95.21 g/mol (anhydrous)
Appearance White to off-white flakes / granules / powder
Purity ≥ 95% (Industrial) / ≥ 99% (Food Grade)
Solubility in Water Highly soluble — 54.5 g/100 mL at 20°C
Melting Point 714°C (anhydrous) / 117°C (hexahydrate)
pH (5% Solution) 5.5 – 7.0
Packaging Available 25 kg bags / 50 kg bags / Bulk
Storage Store in dry, cool, well-ventilated place. Keep sealed — hygroscopic.

Why Source Magnesium Chloride from Polychem Industries?

  • Multiple grades available — Industrial, Food Grade and Technical for all applications
  • Consistent quality with Certificate of Analysis (COA) available on request
  • Bulk supply capability for large manufacturing and construction requirements
  • Export documentation experience for international shipments
  • Competitive pricing with reliable year-round availability
  • 25+ years of experience supplying industrial chemicals across India

Frequently Asked Questions

What is the difference between anhydrous and hexahydrate Magnesium Chloride?
Anhydrous Magnesium Chloride (MgCl₂) contains no water molecules and has a higher concentration of the active compound. The hexahydrate form (MgCl₂·6H₂O) contains six water molecules per formula unit and is the most commonly available commercial form, typically supplied as white flakes. Most industrial applications use the hexahydrate form.
Can Magnesium Chloride be used in food applications?
Yes — Food Grade Magnesium Chloride (also known as Nigari) is approved for use in food applications including tofu production, food fortification, and as a firming agent. It must meet FSSAI and FCC purity standards. Please specify Food Grade when enquiring if this is your intended application.
Is Magnesium Chloride effective for dust suppression?
Yes — Magnesium Chloride is one of the most widely used dust suppressants for unpaved roads and industrial sites. It works by absorbing moisture from the air and keeping the road surface damp, thereby binding dust particles. It is effective even in low humidity conditions and is considered more environmentally friendly than calcium chloride in some applications.
What is the minimum order quantity?
Minimum order quantities vary by grade and form. Please contact our team directly with your requirements and we will provide the best pricing and MOQ for your specific needs.
Do you export Magnesium Chloride outside India?
Yes. We export Magnesium Chloride to Bangladesh, Sri Lanka, Nepal, Bhutan, and South Africa with full export documentation including COA, MSDS, and packing list. Contact us for export pricing and lead times.

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