| CAS No.: | 75-20--7 |
|---|---|
| Formula: | C2ca |
| EINECS: | 200-848-3 |
| Constituent: | Industrial Pure Air |
| Grade Standard: | Industrial Grade |
| Chemical Property: | Combustion-Supporting Gas |
| 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.
| 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 | |||||
Application
1) Acetylene generated by the reaction of calcium -carbide with water can synthesize many organic compounds such as: synthetic rubber, artificial resin, aceton e, 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 polyvinrbyl chloride (PVC), calcium -carbide production of PVC using calcium -caide 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.
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How can I get a sample to check your quality?
After price confirmation, you can require for samples to check our quality.
If you just need a blank sample to check the design and paper quality, we will provide you sample for free, as long as you afford the express freight.
Can you do the design for us?
Yes. We have a professional team having rich experience in gift box design and manufacturing. Just tell us your ideas and we will help to carry out your ideas into perfect gift boxes. It does not matter if you do not have someone to complete files. Send us high resolution images, your Logo and text and tell us how you would like to arrange them. We will send you finished files for confirmation.
How long can I expect to get the sample?
After you pay the sample charge and send us confirmed files, the samples will be ready for delivery in 3-7 days. The samples will be sent to you via express and arrive in 3-5 workdays. You can use your own express account or prepay us if you do not have an account.
What about the lead time for mass production?
Honestly, it depends on the order quantity and the season you place the order. The best record we keep is delivering 20,000 gift boxes within a week. Generally speaking, we suggest that you start inquiry two months before the date you would like to get the products at your country.
What is your terms of delivery?
We accept EXW, FOB, CFR, CIF, DDU, DDP, etc. You can choose the one which is the most convenient or cost effective for you.
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