What does emcbtc mean

3.

They are:

bitcoin

the concept of bitcoin was first proposed by Nakamoto in 2009. According to Nakamoto's ideas, the open source software was designed and released, and the P2P network was built on it. Bitcoin is a kind of P2P digital currency. Point to point transmission means a decentralized payment system

bitcoin cash

bitcoin cash is a new version of bitcoin with different configurations launched by a small number of bitcoin developers

extended data:

virtual currency refers to non real currency. Well known virtual currency, such as network company's network currency, Tencent company's Q currency, Q point, Shanda company's voucher, Sina's Micro currency (used for micro games, Sina reading, etc.), chivalrous Yuanbao (used for chivalrous road game), silver pattern (used for bixue Qingtian game)

the popular digital currencies in 2013 are bitcoin, Leyte coin, infinite coin, quark coin, zeta coin, BBQ coin, pennies (Internet), invisible gold bar, red coin and prime currency. At present, hundreds of digital currencies are issued all over the world. Popular in the circle & quot; The legend of "bitcoin, Wright silver, infinite copper, pennies aluminum"

4. Bitcoin (bitcoin: bitcoin) was originally a kind of network virtual currency, similar to Tencent's q-coin, but it has been able to buy real-life goods
it is characterized by decentralization, anonymity, and can only be used in the digital world. It does not belong to any country or financial institution, and is not subject to geographical restrictions. It can be exchanged anywhere in the world. Therefore, it is used as a money laundering tool by some criminals. In 2013, the U.S. government recognized the legal status of bitcoin, making the price of bitcoin soar. In China, on November 19, 2013, a bitcoin was equivalent to 6989 yuan. On January 7, 2014, Taobao announced that it would ban the sale of Internet virtual currencies such as bitcoin and lightcoin from January 14
the content of this article comes from the series of general knowledge of legal life published by China Law Press

6. Bitcoin (bitcoin: bitcoin) was originally a kind of network virtual currency, similar to Tencent's q-coin, but it has been able to buy real-life goods. It is characterized by decentralization, anonymity, and can only be used in the digital world. It does not belong to any country or financial institution, and is not subject to geographical restrictions. It can be exchanged anywhere in the world. Therefore, it is used as a money laundering tool by some criminals. In 2013, the U.S. government recognized the legal status of bitcoin, making the price of bitcoin soar. In China, on November 19, 2013, a bitcoin was equivalent to 6989 yuan. On January 7, 2014, Taobao announced that it would ban the sale of Internet virtual currencies such as bitcoin and lightcoin from January 14
hope to adopt

7. The concept of bitcoin was first proposed by Nakamoto on November 1, 2008. It is a kind of P2P digital currency. Bitcoin is not issued by specific monetary institutions. It is generated by a large number of calculations based on specific algorithms. At present, bitcoin can be bought and sold on mainstream platforms such as coin security, fire coin, bitewang (free of charge) and so on.

8. Brief introction of bis (Trichloromethyl) carbonate (solid phosgene) 1. Physical and chemical properties of the proct bis (Trichloromethyl) carbonate or trichloromethyl carbonate, English name bis (Trichloromethyl) carbonate, abbreviated as (BTC) or triphosgene or carbonic acidbis - (Trichloromethyl) ester or methyl trichloro carbonate, CAS accession number 32315-10-9. The proct is a stable white crystal with melting point of 78-82 ℃ and boiling point of 203-206 ℃. Its molecular formula is co (occl3) 2, the molecular weight is 296.75, the specific gravity of solid is 1.78g/cm3, the specific gravity of molten state is 1.629g/cm3, the structural formula is as follows: (for convenience, the proct is expressed by BTC) because - mole BTC can proce three moles of phosgene under certain conditions, it is also called "three phosgene", the proct is solid, so it is also called "solid phosgene". BTC is insoluble in water, but soluble in benzene, ethanol, ether, chloroform, tetrahydrofuran and other organic solvents. BTC can react with alcohols, aldehydes, amines, amides, carboxylic acids, phenols, hydroxylamines and other compounds, as well as cyclization condensation to prepare heterocyclic compounds. In short, BTC can completely replace the highly toxic (banned) phosgene and diphosgene synthesis related chemical procts in chemical reactions. 2、 Safety and usage of the proct 1. This proct is a class II organic drug, CAS No. 32315-10-9, United solid No. 2811, gb6944. The dangerous goods in each table are classified as class VI, No. 61908, class II organic poison, special provisions: 73. 2. This proct is extremely stable at room temperature. It should be sealed and stored in a dry, cool and ventilated place. It is forbidden to mix with alkaline compounds. 3. When using and contacting this proct, the operator should wear plastic gloves and gas mask, and the personnel should also try their best to work at the upper air outlet. 4. In case of eye irritation or skin contact, rinse with clean water, rest quietly in case of ingestion or inhalation, and inject 20% and 20 ml of lotropine in case of oxygen inhalation or serious cases. Generally speaking, if the system contains the substances (organic amine, active carbon, organic base) that initiate its decomposition, the reaction can proceed smoothly without any initiator. Otherwise, 1-5% (weight of the proct) of DMF or pyridine and other organic bases are added to the other phase (generally divided into two-phase reaction, one phase is solid phosgene solution, the other phase is substance reacting with phosgene), and the speed of dropping one phase to the other phase is controlled to control the speed of reaction. The solvents of solid phosgene are benzene, chloroform, dichloroalkane, cyclohexane and so on. This solvent should not be the one to initiate the decomposition of phosgene, while the solvent of the other phase should preferably be the one to initiate the decomposition of phosgene. 3、 Application of BTC: 1. A series of carbamate pesticides, urea herbicides such as isoxalon, liguron, herbicides such as chlorpyrifos, oxadiazepine and oxadiazon can be proced easily; In addition, a series of benzoylurea insecticides and sulfonylurea herbicides can be prepared. 2、 In medicine, it is used to manufacture the intermediate of cimetidine and tetrachlorazole ethanol. Synthesis of sleeping drug ampicillin carbon ester, non steroidal anti-inflammatory antihypertensive drugs and antihypertensive drugs. It can also synthesize antibacterials such as azoxicillin, piperacillin and cefoperazone, antidepressant and analgesic carbamazepine, and antiepileptic amipramine; It can also be used to prepare organic meat relaxant, chlorazoxal gland, etc. 3、 In organic synthesis, acyl chlorides, halides, special aldehydes and cyanides can be obtained; In terms of dyes, it can replace phosgene to proce a variety of direct dyes, such as direct yellow, direct light fast red, scarlet alcohol, red based GC. 4、 In the synthesis of polymer materials, 4,4-diphenyloxybenzophenone obtained by reaction with diphenyl ether is an important intermediate for the proction of polymers. It can be used to prepare polyether, ether ketone (peer) with excellent chemical stability and thermal stability, to prepare carbonates, to prepare block copolymer, and to react functionalized polystyrene with corresponding amines to prepare TDI MDI and other monobasic or polybasic isocyanates are important monomers for the synthesis of polyurethane. It can also be used in the synthesis of rubber processing aids such as diethyl azodicarboxylate, diisopropyl ester and dibutyl ester. In recent years, BTC has been widely used in organic synthesis as a new chemical raw material. Attachment: btc1 / 3I + ABI is triphosgene