is also called ca lcium carbide. Chemical formula CaC2. An important chemical raw material made by chemical
processing of limestone. The nature of calcium ca rbide is related to purity. Most industrial products are a mixture of calcium ca rbide and calcium oxide, and contain trace
amounts of impurities such as sulfur, phosphorus, and nitrogen. The color changes from gray, brown to black as the impuritycontent increases. Both the melting point and conductivity decrease with the decrease of purity. The purity of industrial products is generally 80 Chemicalbook%, and the melting point is 1800-2000°C. It does not react with air at room temperature, but oxidation reaction occurs above 350°C, and can react with nitrogen at 600-700°C to form calcium cyanamide. When calciu m carbide meets water or steam, it generates acetylene and releases a lot of heat:
| Chinese Name |
Tan hua gai |
Water Soluble |
Decomposition |
| English Name |
CALC IUM CARBIDE |
Density |
2.22 g/cm³ |
| Nickname |
Acetylene Calcium,Honk Stone |
Appearance |
White Crystal |
| Chemical Formula |
CaC2 |
Application |
Production of Acetylene |
| Molecular Weight |
64.10 |
Hazard Symbol |
F,T |
| CAS No. |
75 -20-7 |
Hazard Characterization |
Flammable, Toxic |
| EINECS |
200-848-3 |
UN No. |
1402 |
1.The main raw material for producing acetylene gas.
2.Cutting and welding for metal material.
3.To synthesize polyvinyl chloride(PVC).
4.Fruit catalyst.
5.The basic material for organic synthesis and cal cium cyanamide
6.Reacting with water to bring about ethine.
7. Reacting with nitrogen to product lime nitrogen.
8.The desulfurizer in steel industry.
We have different specifications of package drums,which includes 50kgs,100kgs.
Hebei Rongxintong Industrial Co., Ltd. is the specialized chemical, processing and sales enterprise.
our products enjoy good reputation both at home and abroad.Our trade partners are around the world, mainly in America,Europe,Australia,South East Asia ,Middle East and South Africa. In order to serve customers well, the company has established special technical department and after-sale service department. We will make careful reply if you get any question.
The company with all the employees will constantly purse excellent quality, perfect brand and our image, and adheres to our spirit of honesty, diligence, seeking truth and progress and insists on business philosophy of quality as life and service as soul. We will satisfy market demands by top products and better service, and will welcome market challenge forever.
1. Are you a trading company or a factory?
Yes, we are a factory with nearly 20 years of experience.
2. How do you control the quality?
We have professional quality inspectors and keep samples of each order for two years, so we also support third party testing, such as SGS, BV, etc.
3. What are your payment terms?
T/T or L/C AT SIGHT for first time cooperation.
4. What is the weight of your unit package?
25kg or 50kg with PE bag or as your requirement.
5. Can I get samples before I order?
Yes, of course you can, we will give you free samples within 3 days.
6. Can I package it according to my logo?
Of course you can, you just need to provide the package design.
7. What is the delivery time?
The delivery time for sample orders is usually 4-7 working days after receiving full payment. For bulk orders, it is about 10-20 working days after receipt of deposit.
8. What is the port of loading?
Usually Shanghai, Qingdao or Tianjin (major ports in China).
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