Tetrahydrofuran (THF), or oxolane, is an organic compound with the formula (CH2)4O. The compound is classified as heterocyclic compound, specifically a cyclic ether. It is a colorless, water-miscible organic liquid with low viscosity. It is mainly used as a precursor to polymers. Being polar and having a wide liquid range, THF is a versatile solvent.
About 200,000 tonnes of tetrahydrofuran are produced annually. The most widely used industrial process involves the acid-catalyzed dehydration . Ashland/ISP is one of the biggest producers of this chemical route. The method is similar to the production of diethyl ether from ethanol. The butanediol is derived from condensation of acetylene with formaldehyde followed by hydrogenation.DuPont developed a process for producing THF by oxidizing n-butane to crude maleic anhydride, followed by catalytic hydrogenation. A third major industrial route entails hydroformylation of allyl alcohol followed by hydrogenation to 1,4-butanediol.
| Product name |
Adipic acid |
|
|
|
| Item |
Supperior class |
First class |
Qualified |
Result |
| Apprearance |
white crystaline powder |
|
|
white crystaline powder |
| Purity % m/m |
99.7 min |
99.7 min |
99.5 min |
99.8 |
| Melting point |
151.5 min |
151.5 min |
151 min |
152.8 |
| Ammonias solution color, pt-co |
5 max |
5 max |
15 max |
1 |
| Moisture % m/m |
0.20 max |
0.27 max |
0.4 max |
0.17 |
| Ash, mg/kg |
7 max |
10 max |
35 max |
4 |
| Iron, mg/kg |
1.0 max |
1.0 max |
3.0 max |
0.3 |
| Nitric acidS, mg/kg |
10.0 max |
10.0 max |
50.0 max |
1.1 |
| Oxidable matter, mg/kg |
60 max |
70 max |
--- |
17 |
| Chroma of melts, pt-co |
50 max |
--- |
--- |
10 |
Yujiang Chemical (Shandong) Co., Ltd. We are located in Shandong with convenient transportation access. We are a professional manufacturer and trader that is concerned with the research, development and production of chemical products. We committed to providing you with high-quality products and services. We always implement the concept of customer value creation, for customers tailored products, to meet the needs of different customers, and continuously provide customers with solutions and technical problems. Further exploration and innovation, and excellence. Welcome and look forward to customers from all of the world to contact us for create a bright future with us together.
1.Q: Where is your company located? How can I visit there?
A: Our factory is located in Qingdao City, China.
2. Q: Can I get sample and how long will it take?
A: Yes. We can supply sample. And you need to pay for the sample and courier.About 2days after receiving the payment, we will send it out.
3. Q: What's the MOQ?
A: Our MOQ is one 20'container.
4. Q: Can I have my own customized product?
A: Yes. Your customized requirements for logo, design, package, your language manual etc. We are very welcome.
5. Q: Can I mix different models in one container?
A: Yes. Different models can be mixed in one container.
6. Q: What's the delivery time?
A: It will take about 10-15 days to finish an order. But the exact time is according to actual situation.
7. Q: What is the payment terms?
A: T/T, L/C and so on.(Contact with customer our service.)
8. Q: How does your factory carry out quality control?
A: We attach great importance to quality control.Every part of our products has its own QC.
9. How do you make our business long-term and good relationship?
A:1. We keep good quality and competitive price to ensure our customers benefit ;
2. We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.
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