NA
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Chemical Name: NA
Molecular weight: 0
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NA: The Complete Guide
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What is NA?
- With the progress of science and technology and the development of society, chemical products have invariably permeated our daily lives, in medicine, food, cosmetics, electronics, industry, and other areas, becoming an essential part of our lives. One such product is NA which has developed particularly rapidly in recent years. Do you know about NA?
- The official answer: Hafnium is a metallic element, symbolized Hf, with an atomic number of 72 and an atomic weight of 178.49. The elemental is a glossy silver-gray transition metal. Hafnium has 6 natural stable isotopes: hafnium-174, 176, 177, 178, 179, 180. Hafnium does not interact with dilute hydrochloric acid, dilute sulfuric acid and strong alkali solutions, but is soluble in hydrofluoric acid and aqua regia. The element name is derived from the Latin name of the city of Copenhagen. In 1925, the Swedish chemist Hwessi and the Dutch physicist Koster used the method of graded crystallization of fluorine-containing complex salts to get pure hafnium salts, and reduced them with metal sodium to get pure metal hafnium. Hafnium is found in the Earth’s crust at 0.00045% and is often associated with zirconium in nature.
What’s the application of NA?
- Hafnium is useful because it is easy to emit electrons (e.g. as a filament for incandescent lamps). An alloy of hafnium and tungsten or molybdenum used as an electrode for high-voltage discharge tubes is used as an X-ray tube. used as X-ray cathode and tungsten filament manufacturing industry. Pure hafnium is plastic, easy to process, high temperature resistant and corrosion resistant, and is an important material for the atomic energy industry. Hafnium has a large thermal neutron capture section and is an ideal neutron absorber that can be used as a control rod and protection device for atomic reactors. Hafnium powder can be used as a propeller for rockets. In the electrical industry, the cathode of X-ray tubes can be manufactured. Hafnium alloy can be used as a front-edge protective layer for rocket nozzles and gliding re-entry vehicles, and Hf-Ta alloy can be used to make tool steel and resistance materials. Hafnium is used as an additive element in heat-resistant alloys, such as hafnium added in alloys of tungsten, molybdenum, and tantalum. HfC can be used as a cemented carbide additive due to its high hardness and melting point. 4TaCHfC has a melting point of about 4215°C, which is the compound with the highest melting point known. Hafnium acts as an aspirator for many inflatable systems. Hafnium aspirants remove unwanted gases such as oxygen and nitrogen from the system. Hafnium is often used as an additive for hydraulic oil, which prevents the volatilization of hydraulic oil during high-risk operations, and has strong anti-volatility, which is a characteristic, so it is generally used for industrial hydraulic oil. Medical hydraulic oil.
Conclusion
Sincere to the customer and in good faith of quality is our forever followed motto. It’s the basement to be a human and do business. We take all responsibility for our products and service sincerely. We are a company integrating R&D, production, and sales. The design, research, and development of pharmaceutical intermediates include more than 330 kinds of pharmaceutical intermediates such as Anti-infectives, Cardiovascular and Cerebrovascular Systems, Digestive systems, Santi-tumor, Nervous systems, Geriatric Drugs, and Gynecological Drugs. At the same time, we have more than 4,000 factories in strategic cooperation with nearly 50,000 chemical products, so we can provide you with a one-stop purchasing service, which greatly saves customers’ procurement costs and time.
Hello, I’m Pew Ni, the chemical products one-stop solution expert.
Hi, I‘m Peter Ni, the founder of Sincere-Chem, I’ve been running a company in China that exporting chemicals, pharmaceuticals, and intermediates for over 70 countries now. And a range of 50,000 products with the best quality and competitive price to meet your different purchasing needs.
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WHY THEY SAY TO US
Peter has been my partner for many years, we met at the Shanghai CPHI Fair in 2014, for the first time I didn't have much interest in Peter's products because our company had a stable supplier. Although we didn't work together, Peter would often send me important news and interesting trend information about the industry, so we became good friends, even though I didn't place any orders with him during this time, even if it was a sample order. In September 2016, our original supplier was unable to provide us with the quality and delivery guarantees we needed, so I first thought of Peter and his company. Until now, we have maintained a very good personal friendship in addition to a steady business relationship.
In all my years of sourcing from China, I first time to found that working with Sincere Chemical was so good, they helped me with all the production and delivery as well as a lot of technical expertise, which saved me a lot of time. When I first approached Peter for a quotation for Optical Brightener, he made me a detailed quotation with not only prices but also foreign trade details, company profile, company strengths, R&D capabilities, production capacity, packaging methods, raw material control, environmental protection, and much more. This information was a very important reference for me in making purchasing decisions. Sincere Chemical is a trustworthy supplier and I believe our business will grow from strength to strength!
Hi, I'm Kim, I'm Peter's partner and although I don't like him very much (because he never gives me more money for my prices, hahaha) I'm still willing to write him customer feedback. As an international buyer, I have to deal with a lot of things every day and my inbox is often full of development letters. It's a lot of junk and meaningless pleasantries, which I don't like that much, but Peter's emails always give me a better understanding of the product and the industry. I am also very pleased with his work ethic, and I am very happy with his work every time I work with him, not only in providing quotations but also in facilitating all the details of my work so that I can concentrate more on other things, so he is the best supplier for me. Although his prices are not the lowest among all suppliers, his products give me the greatest peace of mind.
Sincere Chemical team visited our USA factory in the year of 2017. We think highly of cooperation with them. We thanked you for the past excellent orders and best product quality. We also talked about some new products for future orders. We will be still in strategic cooperation in the future and help each other.
I just got the product. The quality is awesome. I’m very happy. Hope to place soon a new order in your company. Also wish for our future business.
Sincere Chemical is a reliable and professional company. Not only on exporting but also their professional team service. Their team gave us so many suggestions for our new project. We are really satisfied with their awesome service and best product quality. Sincere-Chem’s vendor code is 51465768 in our cooperated vendor list system.
I have visited Sincere Chemical company in the year 2018. Their company can be considered as one of the most professional, customer-focused, and product quality-driven companies that I have worked with in recent years.
We are a pharmaceutical products manufacturer in Brazil. I’m happy to cooperate with Sincere Chemical especially cooperate with Peter. Peter is patient and friendly. I’m satisfied with his 24*7 hours service. We are not only cooperators but also best friends with each other.
Great service and very supportive. This is my first order and I feel fortunate to be with Peter and his company. Product received was the right good quality product, so my review is more related with the quality, service and shipment. Thank you for sending. next time I will order again. Good supplier...
