Calcium Carbonate Powder CaCO3, 25kg Bag — Bulk Supply

CaCO₃ powder (calcium carbonate, chemical formula CaCO₃) is a white, powdery solid widely used in everyday life and industrial production. In nature, CaCO₃ is found in limestone, marine fossils, seashells and eggshells. Packaging: 25 kg per bag; origin: Vietnam, China.

Calcium Carbonate (CaCO₃) powder is one of the key industrial raw materials widely applied in paint, plastic, paper, animal feed, water treatment, and construction industries. In nature, CaCO₃ exists as limestone, seashells, and eggshells, which are mined to produce industrial calcium carbonate powder with varying fineness levels.

So what are the properties of CaCO₃ powder? How is it used in manufacturing? And where to buy CaCO₃ powder in 25kg bags? Let Loc Thien Chemicals guide you!

What is Calcium Carbonate (CaCO₃) Powder?

Calcium Carbonate (CaCO₃) powder is a common natural mineral with the chemical formula CaCO₃, sourced from natural limestone or chemically synthesized. Due to its chemical inertness, white colour, and availability in several fineness grades, CaCO₃ is a critical raw material across multiple industries.

CaCO₃ can be mined from natural sources like limestone or produced artificially via reactions between calcium oxide (CaO) and CO₂.

• Other names: Calcium carbonate, Limestone powder
• Chemical formula: CaCO₃
• CAS: 471-34-1
• Origin: Vietnam, China
• Packaging: 25kg/bag

Properties of Calcium Carbonate (CaCO₃) Powder:

Physical Properties:

• Appearance: white solid powder.
• Solubility in water: insoluble under normal conditions.
• Decomposition temperature: begins to decompose at about 825^oC into CaO and CO2 (it decomposes before melting).
• Boiling point: decomposes into CaO and CO2 before boiling.

Chemical Properties:

• Solubility: insoluble in water but soluble in excess CO2 to form calcium bicarbonate (Ca(HCO₃)₂).
  • CaCO₃ + CO₂ + H2O → Ca(HCO₃)₂
• Reacts vigorously with acids: produces calcium salts, water, and CO2 gas.
  • CaCO₃ + 2HCl → CaCl₂ + CO2↑ + H2O
• Thermal decomposition: from about 825^oC it decomposes into calcium oxide (CaO) and CO2.
  • CaCO₃ → CaO + CO₂

Production Methods:

• Using Calcium Chloride (CaCl₂) and Sodium Carbonate (Na₂CO₃):
  • CaCl₂ + Na₂CO₃ → CaCO₃ + 2NaCl
  • This reaction yields CaCO₃ and sodium chloride (NaCl).
• Using Calcium Oxide (CaO) and Carbon Dioxide (CO₂):
  • CaO + CO₂ → CaCO₃

White CaCO3 powder

Applications:

• Construction – Key component in cement and concrete
  • CaCO₃ is a primary material for cement, concrete, and tiles. When heated, it decomposes into CaO and CO₂, forming the core of cement production.
    • Enhances concrete durability
    • Reduces production costs
    • Improves tile glossiness
• Paints – Whitening agent & durability enhancer
  • Ultra-fine CaCO₃ is used as a filler in paints to:
  • Increase brightness
  • Improve coverage & adhesion
  • Reduce production costs
• Plastics – Improves strength & cost efficiency
  • CaCO₃ is a key additive in plastics for:
    • Enhancing hardness & mechanical strength
    • Improving flame retardancy
    • Reducing raw material costs
• Animal Feed – Mineral supplement
  • Calcium enrichment for livestock/poultry
  • Promotes bone/teeth development
  • Stabilizes digestion and animal health
• Water & Wastewater Treatment – Neutralising acidic water, raising pH
  • Neutralises mildly acidic water and wastewater and raises pH.
  • CaCO₃ is sparingly soluble, so it raises pH slowly and within a limit (unlike lime or caustic soda); particle size and dose must be tested on the actual water.

You may also like: Water treatment chemicals

Bulk CaCO₃ Powder Supply in Ho Chi Minh City

Loc Thien Chemicals supplies industrial CaCO₃ powder in 25kg bags, stocked at 6 warehouses:

• Packing: 25kg/bag; origin Vietnam, China (confirmed when quoting)
• Stock: bulk quantities across 6 warehouses
• Warehouses: Ba Ria – Vung Tau, Dong Nai, Binh Duong, Da Nang, Can Tho, Bac Ninh
• Quotation: by grade and volume; call 0979 891 929, quote within 15 minutes
• Technical advice: choosing the grade for paint, plastics and wastewater treatment

To buy CaCO₃ powder in 25kg bags in Ho Chi Minh City or for delivery to other provinces, call the hotline 0979 891 929 for a quote.

Delivery & Documents

• Warehouses: 6 – Ba Ria – Vung Tau, Dong Nai, Binh Duong, Da Nang, Can Tho, Bac Ninh.
• Estimated delivery: inner Ho Chi Minh City 4 hours; southern and Mekong Delta industrial zones 24–48 hours; northern and central Vietnam 2–3 days. Call hotline 0979 891 929 for details of the delivery process.
• Packing: 25kg/bag.
• Technical documents: tell us which documents you need when asking for a quote, and Loc Thien will confirm what can be supplied. Also state the application (paint, plastics, wastewater), the required particle size/whiteness and the volume.

FAQ – CaCO₃ Powder

Is CaCO₃ powder harmful to health?

CaCO₃ powder is a natural mineral with low toxicity when handled correctly. Continuous inhalation of dust without protection may irritate the respiratory system and affect the lungs after long exposure. Wear a dust mask and safety goggles when loading or mixing.

Can CaCO₃ powder fully replace other additives?

No. CaCO₃ is used as a filler in paint, plastics, paper and animal feed to reduce raw-material cost; purity and particle size determine its effect on hardness and coverage. Many formulations still need other additives to reach the required mechanical properties.

Is CaCO₃ soluble in water, and how is it used in water treatment?

CaCO₃ is insoluble under normal conditions but dissolves in CO₂-rich water to form calcium bicarbonate, Ca(HCO₃)₂. In water treatment it is used to neutralise mildly acidic water and raise pH. Because it is sparingly soluble it reacts more slowly than lime or caustic soda; particle size and dose must be tested on the actual water.

What determines the quality and quotation for CaCO₃ powder?

CaCO₃ content (purity), particle size, whiteness, moisture, origin (natural or precipitated), bag size and transport cost. Loc Thien quotes by grade and volume – call 0979 891 929 for a quote within 15 minutes.

How does natural CaCO₃ powder differ from synthetic (precipitated) CaCO₃?

Natural powder is mined from limestone, marble or shells and ground, and is common in construction, plastics, paint and paper. Synthetic (precipitated) CaCO₃ is made chemically, for example CaCl₂ + Na₂CO₃ or lime milk + CO₂; particles are more uniform but production cost is higher. Pharma/food grades have their own standards and are not the industrial 25kg powder on this page.

How long does delivery take and what should I send for a quote?

Goods ship from 6 warehouses (Ba Ria – Vung Tau, Dong Nai, Binh Duong, Da Nang, Can Tho, Bac Ninh). Estimated: inner Ho Chi Minh City 4 hours; southern and Mekong Delta industrial zones 24–48 hours; northern and central Vietnam 2–3 days. For a quote send the application, required particle size/whiteness, volume and delivery point; call 0979 891 929 for details of the delivery process.