Calcium Carbide
Brand: KJS
Product origin: China
Delivery time: About 30days after down payment
1.Calcium carbide, with the molecular formula CaC ₂, is an important basic chemical raw material widely used in various industrial fields such as organic synthesis, metallurgy, and building materials.
2.Calcium carbide is made from high-quality limestone and coke as raw materials, which are melted and reacted in a high-temperature sealed electric furnace. It has core advantages such as high purity, strong activity, and stable performance, and can accurately match the production needs of different industries.
Basic Product Information
-Chemical name: Calcium carbide
-Molecular formula: CaC ₂
-Molecular weight: 64.10
-Appearance: Industrial products are gray black, yellow brown, or black solid blocks, with a purple or gray cross-section; Pure product is a colorless crystal (difficult to obtain in industrial production due to impurities)
-Density: 2.22 g/cm ³ (20 ℃)
-Melting point: 2300 ℃
-Solubility: Almost insoluble in ethanol, reacts violently with water to produce acetylene (C ₂ H ₂) gas and calcium hydroxide, and releases a large amount of heat
Core product features
1. High reactivity: Calcium carbide can quickly generate acetylene upon contact with water. Acetylene is an important fuel and organic synthesis raw material, and this characteristic is the core industrial value of calcium carbide; Meanwhile, calcium carbide also has strong reducibility and can react with various metal oxides.
2. Controllable purity: By precisely controlling the raw material ratio and melting process, different purity levels of calcium carbide (with CaC ₂ content ranging from 70% to over 98%) can be produced, meeting the differentiated needs of ordinary industrial processing and high-end fine chemical industry.
3. Good stability: Under dry and sealed storage conditions, the chemical properties of calcium carbide are stable and not easily deteriorated, making it convenient for long-term storage and long-distance transportation.
Main application areas
1. Organic synthesis industry (core application)
Acetylene generated by the reaction of calcium carbide and water is a key raw material for the synthesis of various organic compounds
-Synthetic polyvinyl chloride (PVC): Acetylene reacts with hydrogen chloride to produce vinyl chloride, which is then polymerized to produce PVC. PVC is widely used in the production of plastic products such as pipes, sheets, films, and cable sheaths;
-Synthesize basic chemical raw materials such as acetic acid, acetaldehyde, acetone, etc., and further use them in the production of coatings, adhesives, solvents, pharmaceutical intermediates, etc;
-Synthetic acetylene black is used in rubber reinforcement, conductive materials, ink and other fields.
2. Metallurgical industry
Calcium carbide can be used as a deoxidizer, desulfurizer, and dephosphorizer in steelmaking. Its reducibility can remove impurities from molten steel, improve the purity and mechanical properties of steel; Meanwhile, in non-ferrous metal smelting, calcium carbide can be used to reduce metal oxides and assist in the extraction of rare metals.
3. Building materials and light industry
Calcium carbide is used to produce lime nitrogen (calcium cyanamide), which is a high-quality soil amendment, fungicide, and can also be used to manufacture compound fertilizers; In addition, calcium cyanamide generated by the reaction of calcium carbide and nitrogen can also be used to produce chemical products such as melamine; In light industry, it can be used for wool anti shrink treatment, fabric dyeing and fixing processes.
4. Other fields
When acetylene burns, the flame temperature is high (up to 3000 ℃ or above), which can be made into acetylene flame for metal cutting and welding; In mining, tunnel and other engineering projects, calcium carbide can be used as a fuel source for blasting operations; Meanwhile, calcium carbide can also be used in the production of high-end fields such as semiconductor materials and luminescent materials.
Quality standards
This product is strictly produced in accordance with the national standard "Calcium Carbide (Calcium Carbide)" (GB/T 10665-2023), and the main quality indicators are as follows (can be customized according to customer needs):
| Product Grade | CaC₂ content (≥) | Total Sulfur Content (≤) | Total Phosphorus Content (≤) | Particle size range |
| First-Class Product | 98% | 0.06% | 0.04% | 5-80mm (Customizable) |
| Second-Class Product | 90% | 0.08% | 0.06% | 5-80mm (Customizable) |
| Grade 3 product | 80% | 0.10% | 0.08% | 5-80mm (Customizable) |
| Common product | 70% | 0.15% | 0.12% | 5-100mm (Customizable) |
Key points for safe storage and transportation
Calcium carbide is a flammable substance in contact with moisture, with dangerous goods number 43025. During storage and transportation, the following requirements must be strictly followed:
-Storage: Calcium carbide should be stored in a dry, ventilated, and cool dedicated warehouse, away from sources of fire and heat. It is strictly prohibited to mix with dangerous goods such as water, acids, and oxidants; The floor of the warehouse should be dry to prevent moisture. The warehouse should be equipped with desiccants and fire extinguishing equipment (dry powder fire extinguishers, carbon dioxide fire extinguishers, and water is strictly prohibited for extinguishing fires).
-Transportation: Calcium carbide is transported using sealed and moisture-proof specialized vehicles, which must be labeled with the danger sign "Flammable when wet"; Avoid bumps and impacts during transportation to prevent packaging damage; Transportation is prohibited on rainy days.
-Usage: When operating, it is necessary to wear acid and alkali resistant protective equipment (gloves, protective clothing, goggles) and carry out the operation in a well ventilated place; When calcium carbide reacts with water, the feeding rate should be controlled to avoid excessive reaction and gas leakage; If a leak occurs, it should be covered and buried with dry sand, and it is strictly prohibited to rinse with water.
Product advantages and service commitments
1. Source control: Selecting high-quality raw materials and adopting advanced closed-loop electric furnace melting technology to ensure stable and reliable product quality;
2. Customized services: Products of different purities and particle sizes can be customized according to customer needs to meet personalized production needs;
3. Improve logistics: Equip a professional dangerous goods transportation team to ensure the safety and timely delivery of goods;
4. Technical support: Provide professional technical consulting services to assist customers in solving various problems during product use.
Looking forward to working with you hand in hand. If you need to learn more product details, obtain quotes or samples, please feel free to contact us at any time!
