Basic Information

• Chemical Name: Calcium carbonate
• Molecular Formula: CaCO3
• Molecular Weight: 100.09 g/mol
• CAS Number: 471-34-1
• Natural Forms:
  • Calcite: Most stable hexagonal crystal form (e.g., limestone, marble).
  • Aragonite: Orthorhombic form (e.g., shells, coral).
  • Vaterite: Metastable hexagonal form (rare in nature).
• Appearance: White powder or colorless crystals (natural forms may have impurities, showing colors like gray or yellow).
• Physical Properties:
  • Density: 2.71 g/cm3 (calcite), 2.93 g/cm3 (aragonite).
  • Melting Point: Decomposes at 825°C (releases CO2, forming CaO).
  • Solubility: Insoluble in water (0.0013 g/100 mL at 25°C), soluble in acids (e.g., HCl, forming CaCl2 + CO2 + H2O).

• Thermal Decomposition:CaCO3825°CCaO+CO2↑
• Acid Reaction: Releases carbon dioxide in the presence of acids, a key property for applications like antacids and CO2 production.
• Water Interaction: Reacts with dissolved CO2 in water to form soluble calcium bicarbonate:CaCO3+CO2+H2O?Ca(HCO3)2
  This equilibrium drives natural processes like cave formation (stalactites/stalagmites).

• Toxicity:
  • Inhalation of fine dust may cause respiratory irritation (e.g., coughing, dyspnea). Prolonged exposure to limestone dust is linked to pneumoconiosis (rare with modern safety measures).
  • Ingestion of large quantities may cause gastrointestinal discomfort (e.g., constipation, nausea).
• GHS Hazards:
  • H315 (Causes skin irritation), H319 (Causes serious eye irritation), H335 (May cause respiratory irritation).
• Handling Precautions:
  • Wear dust masks, goggles, and gloves in dusty environments.
  • Avoid prolonged inhalation; ensure good ventilation during processing (e.g., grinding or mixing).
• Storage: Store in dry, sealed containers to prevent moisture absorption (minimal reactivity but keeps dust under control).

Packaging can be customized according to customer requirements.

Company Profile

Shandong Huashang Chemical Co., Ltd.,is a professional to manufacture and R&D pharmaceutical intermediates, organic intermediates, and fine chemicals. The company is established under the support of the Jinan city government, so the company has large advantages in enterprise credit, finance security, product quality control, and cargo export.huashang Chem locates in the national new materials industry park of Jinan city and is awarded the title of high-tech corporation.

HuashangrChem has an export & import license, and chemical sales license, the products are exported to South Korea, South America, Southeast Asia, Europe, and other countries or regions. Under rich experiences and excellent international reputation, huashang chem becomes a quite influential enterprise in China's chemical field. huashangChem sincerely looks forward to establishing long good cooperation with our customers from all over the world.

Our Advantages

1.More than 10 years chemical production and exporting experience, and good relationship with Customs and ship agents, which guarantee fast and safe export.

2. Professional R&D technology team and equipment which keep products quality better and better.

3. Government support guarantees good company credibility and finances safe.

4. Timely after-service resolves your worry about international trade.

5. Factory locates in the national new material industrial park where guarantees safe and standard production environment.

FAQ

Q1: Can I get some samples?

A: Yes, we can supply free samples , you pay for the shipping cost only.

Q2: How can you guarantee the quality of your products?

A: We will make samples before mass production, and after the sample approved, we'll begin mass production. Doing 100% inspection during production, then do random inspection before packing.

Q3: What is your MOQ?

A: Usually our MOQ is 1kg. But we can also accept less quantity such as 100g on the condition that the sample charge is 100% paid.

Q4: How to start orders or make payments?

A: PI will be sent first after confirmation of the order, enclosed our bank information. Payment by Paypal, T/T, Western Union, LC, ****** Trade Assurance is OK.

Q5: How do you treat quality complaint?