emcbtc

1. Annual 13%....
how much is the income? How much is less? How are others doing? To get the answer, we need to have a scientific and reasonable understanding of the performance of investment transactions on the basis of statistical analysis. Let's look at some data
first, let's look at several basic indicators:
inflation rate. For a long time in the world, the weighted average value is 3%. Then we can compare the inflation rate of which country, and we have a general reference, which is more or less, which period and year, which period and year exceed this indicator, and which period and year are lower than this indicator, We will have a basic basis for reference and judgment
stock price earnings ratio (PE) refers to the ratio of stock price to earnings per share in a survey period (usually within one year). For the average p / E ratio of the stock market, from the historical data of different developed countries, this figure is usually kept between 12 and 15. In the A-share market, the PE of many enterprises easily exceeds 20
economic growth rate: in the past decade, the economic growth rate of many major countries and economies in the world has been around 2.5%, while that of China is relatively high, at around 7%
this series of indicators and statistics are the basis and reference for our decision-making
according to the statistical survey of historical data, if the annualized compound rate of return reaches 13%, you are an excellent fund manager, trader and investor. 13% of the data is based on a global scale, which has been verified by time and is supported by the practice of a large number of traders and fund managers—— Excerpt from "weak water 3000-10 years transaction"

2. Solid phosgene, also known as triphosgene, chemical name is bis (Trichloromethyl) carbonate, English name is bis (Trichloromethyl) carbon, abbreviated as BTC. Solid phosgene is a white crystalline solid, with a smell similar to phosgene, melting point 78-81 ℃, content: 99.5%, boiling point 203-206 ℃ (partial decomposition); BTC is insoluble in water, but soluble in benzene, toluene, ethanol, chloroform, tetrahydrofuran, dichloroethane and other organic solvents, and decomposes in the presence of hot water and sodium hydroxide.
BTC has similar reactivity to phosgene, and can react with various compounds such as alcohol, aldehyde, amine, amide, carboxylic acid, phenol, hydroxylamine, etc, BTC can completely replace the toxic procts related to phosgene synthesis in chemical reactions, and has important applications in medicine, pesticides, dyes, organic synthesis and polymer materials

3. Exclusive page?? It seems very tall

4. 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