BTC triphosgene inhalation

1.

1. BTC: chemical vocabulary

BTC is the abbreviation of (Trichloromethyl) carbonate. It is the abbreviation of a chemical substance, mainly composed of carbon, chlorine and oxygen. The chemical formula is c3cl6o3, which can be used as the substitute proct of highly toxic phosgene and diphosgene in the synthesis

BTC: enterprise abbreviation

BTC refers to BTC Yingqun enterprise from Taiwan, China, which is a large-scale high-tech enterprise developing and procing keyboard, mouse and recorder. BTC is famous for procing high-quality computer peripherals. BTC is the OEM keyboard and add-on card proced by famous brand EMPREX, ranking first in Taiwan, especially the third in the world

BTC: the concept of bitcoin was first proposed by Nakamoto on November 1, 2008, and was formally born on January 3, 2009. According to the idea of Nakamoto, the open source software is designed and released, and the P2P network on it is constructed. Bitcoin is a virtual encrypted digital currency in the form of P2P. Point to point transmission means a decentralized payment system

BTC: engineering material

BTC (buttress thread coupling), full name of partial trapezoidal thread coupling, is an API standard thread connection type, which is commonly used in the connection of petrochemical pipes or tools, such as floating collar, guide shoe and pipe shoe used in cementing operation

5, BTC: e-commerce mode

BTC (business to customer) e-commerce is one of the categories of e-commerce by trading partners, that is, e-commerce of commercial institutions to consumers. This form of e-commerce is generally based on the network retail instry, mainly with the help of the Internet to carry out online sales activities. BTC is also known as B2C, B2C mode is the earliest e-commerce mode in China

2. As a virtual digital currency in the form of P2P, bitcoin is very popular in recent years, and many people will dig bitcoin. So, what's the use of bitcoin
bitcoin is generated by a large number of calculations based on a specific algorithm. Its essence is the special solution generated by a bunch of complex algorithms, and the process of digging bitcoin is to continuously seek the special solution of the equations through a huge amount of calculation. The equations are designed to have only 21 million specific solutions, so the upper limit of bitcoin is only 21 million
so if you want to dig bitcoin, you can use the computer to dig it. You can download the special bitcoin computing tool to do the operation to dig bitcoin
of course, the more professional the equipment is, the greater the probability of being able to dig. Therefore, we will carefully select the right mining machine and pool before digging bitcoin. For example, the BTC guild mine in foreign countries is very famous. As for the mining machine, it is a computer used to earn bitcoin, but the computer is equipped with professional mining chips. After all, bitcoin is a hot card. The price of a miner ranges from two or three hundred yuan to 200000 yuan.

3. Based on the concept of "decentralization", the price of bitcoin has increased millions of times in the 11 years since its birth. In October 2009, the initial price of bitcoin was about US $0.00076/coin; On December 17, 2017, bitcoin reached the highest price in history, with a single bitcoin as high as $19142
the real price start is in October 2010. Before that, you can buy 10W pieces for 1W yuan. But this is because no one bought it, resulting in extremely low prices. If someone wants to buy 10W, the price will be higher than 1W.

4. What is bitcoin to eat?

5. I've played too. Don't play any more. It's just deceiving. When you asked for five yuan, he said that you didn't ask until level 40. When you get to level 40, it's a lie to say how many videos you need to watch.

6. The strongest Daren this game you have to play the level enough, 20 yuan words can be withdrawn once a day.

7. Triphosgene, also known as solid phosgene, chemical name for trichloromethyl carbonate, bis (Trichloromethyl) carbonate, soluble in ethanol, benzene and ether, water and alkali decomposition. It can be used for pharmaceutical synthesis, pesticides, and also an important raw material for the synthesis of polyurethane foam plastics.
Chinese Name: phosgene, solid phosgene, bis (three chloromethyl) carbonate
English Name: Bis (Trichloromethyl) Carbonate (BTC), three. Triphosgene
molecular formula: c3cl6o3
structural formula: CO (occl3) 2
molecular weight: 296.75
CAS No.: 32315-10-9
melting point: 78-81 ℃
boiling point: 202-206 ℃
solid density: 1.78g/cm3
melting density: 1.629g/cm3

8. Three dimensional structure
triphosgene

Properties of Triphosgene:
triphosgene is also known as solid gas, chemical name is bis (Trichloromethyl) carbonate, English name is bis (triehloromethyl) carbon or triphosgene
triphosgene is a white crystal with a smell similar to phosgene
molecular formula c3cl6o3
molecular weight 296.75
CAS No. 32315-10-9< The melting point is 81-83 ℃< The boiling point is 203-206 ℃< The solid density is 1.759/em3< The melting density is 1.6299/em
strong stability, only a small amount of decomposition at boiling point, resulting in trichloromethyl chloroformate and phosgene
solubility: insoluble in water, soluble in ether, THF, benzene, cyclohexane, chloroform, carbon tetrachloride, 1,2-dichloroethane, dichloromethane, ethanol and other organic solvents
one molecule solid triphosgene can be decomposed into three molecule gas phosgene. Compared with gas phosgene, it has the advantages of transportation, safe use, convenient measurement, reverse dropping reaction, and the reaction is close to equal equivalence. In instry, it is only treated as a general toxic substance. It can replace phosgene or diphosgene in medicine, pesticide, organic chemical instry and polymer synthesis
the initial decomposition temperature of solid phosgene is 130 ℃, and it begins to decompose at 90 ℃ in a humid atmosphere. It should be stored in a dry and cool place, away from fire source, and separated from organic amines
its physical properties were reported in 1887, but its crystal structure was not reported until 1971. Its crystal structure is single crystal, and its crystal parameters are a = 9.824 10-om, B = 8.87 x10-om, C = 11.245xio-om. m. The crystal angle of Triphosgene is about 91.70.
when triphosgene is distilled at atmospheric pressure, a small amount of decomposition occurs, resulting in phosgene and trichloromethyl chloroformate. Studies have shown that triphosgene can be safely quantitatively decomposed into phosgene [7J] in the presence of chloride ions, which solves the problem that phosgene can not be accurately measured in the reaction process< The reaction equation is as follows:
triphosgene was synthesized by chlorination of DMC and chlorine under the initiation of light, heat or initiator. The chlorination reaction is a free radical chain reaction, NMR study showed that chlorination was carried out step by step
uses: used for synthesis of chloroformate, isocyanate, polycarbonate and acyl chloride.