| CAS No.: | 75-20-7 |
|---|---|
| Formula: | Cac2 |
| EINECS: | 200-848-3 |
| Classification: | Non-Metal |
| Appearance: | Solid |
| Grade Standard: | Industrial Grade |
| Samples: |
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| Customization: |
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Audited Supplier Calcium carbide is an inorganic compound, white crystal, industrial product is gray black block, the cross section is purple or gray. In contact with water, a fierce reaction occurs immediately, forming acetylene and releasing heat. Calcium carbide is an important basic chemical raw material, mainly used to produce acetylene gas. Also used in organic synthesis, oxylene welding and so on
Calcium carbideore is yellow-brown or black bulk solid, pure white crystal (containing higher CaC2 is purple). Density 2.22g/cubic cm, melting point 2300ºC (related to the content of CaC2), immediately react with water, generate acetylene, and release heat, calcium carbide content different melting point also changes.
Impurities: because calcium carbide often contains calcium arsenide (Ca3 As2), calcium phosphide (Ca3 P2) and other impurities, and water action at the same time release hydrogen arsenide (AsH3), phosphide (PH3) and other toxic gases, so the use of acetylene produced by calcium carbide is toxic.
| Product | calcium carbide calcium carbide 295l kg |
| H.S.CODE | 28491000 |
| CAS NO. | 75-20-7 |
| EINECS NO. | 200-848-3 |
| Color | Grey, dark grey |
| Usage | Producing acetylene gas |
| Grade | tech grade |
| Appearance | Grey or dark grey stone |
| ITEM | INDEX | |||||
| Gas Yield 20°C 101.3 Kpa L/kg ≥ |
Size | Gas Yield | Size percentage | Ash,% | ||
| Top | A Grade | Accept Grade | ||||
| 2-4mm | 260 | 240 | 220 | ≥90 | ≤1 | |
| 4-7mm | 280 | 260 | 240 | ≥90 | ≤1 | |
| 7-15mm | 290 | 270 | 250 | ≥90 | ≤1 | |
| 15-25mm | 300 | 285 | 260 | ≥90 | ≤1 | |
| 25-50mm | 300 | 295 | 280 | ≥90 | ≤1 | |
| 50-80mm | 300 | 295 | 280 | ≥90 | ≤1 | |
| 80-200mm | 300 | 295 | 280 | ≥90 | ≤1 | |
| PH3 %(V/V) ≤ | 0.08 | |||||
| H2S %(V/V) ≤ | 0.10 | |||||
| Quality Standard | GB10665-2004 | |||||
1) Acetylene generated by the reaction of calcium carbide with water can synthesize many organic compounds such as: synthetic rubber, artificial resin, acetone, keone, carbon black, etc.; At the same time acetylene oxide flame is widely used in metal welding and cutting.
(2) When powdered calcium carbide is heated with nitrogen, calcium cyanamide is generated, namely lime nitrogen:
CaC2 + N2 → CaCN2 + C, ΔH = -296kJ/mol
Lime nitrogen is an important raw material for preparation of cyanamide. The melt produced by the reaction of heated lime nitrogen with salt is used in gold mining and nonferrous metal industry.
(3) calcium carbide itself can be used in iron and steel industry desulfurization agent.
(4) The production of polyvinyl chloride (PVC), calcium carbide production of PVC using calcium carbide CaC2, in the water to produce acetylene (C2H2), acetylene and hydrogen chloride (HCl) synthesis of vinyl chloride monomer (CH2=CHCl), and then through the polymerization reaction of vinyl chloride to produce polyvinyl chloride - [CH -- CHCI]n -- chemical reaction method.
Calcium carbide is stored in a cool, dry and well-ventilated warehouse. Keep away from fire and heat source. Keep relative humidity below 75%. The package must be sealed and protected from moisture. Should be stored separately from acids and alcohols, and do not mix storage. The storage area shall be equipped with suitable materials to hold the leakage
50kg or 100kgs/iron drum
What's your delivery time?
A: It's usually 7-10 days, if we have it in stock. If not, it may take 10-15 days to arrange delivery.
Q: Do you provide samples? Is it free or extra?
A: Yes, we can provide samples free of charge, but we don't pay for shipping.
What are your terms of payment?
A: We can make payment by TT, 100% sight L/C and DP.
Q: Why did we choose you?
A: We can provide consistent, high quality products.
(2) We have strong technical support
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