单词 | Bromine |
例句 | 1) Magnesium mine, salt mine , Bromine mine, Piezoelectric Crystal. 2) Beryllium, bismuth, and bromine must be considered as well. 3) Test standard samples of bromine number 0. 4) Bromine can restrain central nervous system and avoid insomnia. 5) Objective To observe the efficacy of bromine - containing disinfectant in on - the - spot disinfection of swimming pool water. 6) With C 9 petroleum resin and bromine as materials , a brominating C 9 petroleum resin was synthesized. 7) The company mainly engaged in bromine and brominated flame retardant epoxy production, the wholesale, retail and import and export business. 8) Electrocatalysis of ascorbic acid, dopamine, bromine, thallium and iron was studied at polyaniline modified electrodes. 9) Bromine Nonmetallic chemical element, chemical symbol Br, atomic number 35. 10) A new method for determining the bromine content in brominated polystyrene was studied. 11) ASTM D1159-01 Standard Test Method for Bromine Numbers of Petroleum Distillates and Commercial Aliphatic Olefins by Electrometric Titration. 12) Isomerization occur during bromine reaction,[http:///bromine.html] that is mean secondary allylic configuration changes into primary allylic configuration. 13) Incineration of pyrolysis with recovery of bromine or hydrobromic acid. 14) It has the largest production of bromine series chemical in China. Its Hydrobromic Acid production line boasts the most advanced techmology in China. 15) A chemical compound containing two bromine atoms bound to another element or radical. 16) The number of cationic bromine and chlorine compounds is restricted. 17) The first route was using the liquid bromine to aromatize the 4-chlorotetrahydrophthalic anhydride to 4-chlorophthalic anhydride, The yield was 89%, and the purity was more than 99%. 18) The yield was higher using bromine The yield was higher using bromine than chlorine. 19) The Dead Sea waters contain a high concentration of salts composed of potassium, bromine and magnesium as well as other minerals. 20) They found none but instead discovered medicinal water, unique for its richness in salts of iodine and bromine. 21) By measuring the pressure, saturated solution of potassium bromide bromine absorption method, the smell test and other methods(), the mixture can be identified more quickly. 22) The results show that resins D201 have excellent ability of bromine adsorption, the loaded resins can desorb easily with hydrochloric acid, and the desorption property is quite excellent. 23) Titanium heat exchanger: Titanium alloy made heat exchanger can prevent chlorine water, ozone, iodine, bromine and salt water effecting on it and no corrosion and erosion will appear. 24) Novel hydrophobic polyvinylidene fluoride(PVDF) hollow fiber membranes were adopted in air blowing membrane absorption(ABMA) process for the purpose of bromine extraction from seawater. 25) Methanol is suitable solvent for producing tetrabromobisphenol A, the factor of affecting product quality has: Solution temperature and acidity and fee ding speed of bromine. 26) The polystyrene is mixed with alkyl halide, alkyl aluminium halide, dehydrant, brominated by bromine to get narrow distributed brominated polystyrene with low molecular weight. 27) Besides, oxygen flask combustion was adopted to analyze the bromine content of the product. 28) In view of the serious corrosive appearance of fans in bromine production, the anti-corrosive treatment plan for the fans is given in this paper. 29) In this paper, bromized polystyrene flame retardant was synthesized by electrophilic substitution of waste polystyrene with bromine using aluminium ehlorid as catalyst. 30) Ancient Egyptians extracted purplish-red dye from fucus-algin, 0.01% iodine, and some bromine mannite, which resulted in serious illness. 31) ASTM D2710-99 Standard Test Method for Bromine Index of Petroleum Hydrocarbons by Electrometric Titration. 32) Dibromo neopentyl glycol, useful as a reacting fire retardent, is suitable to make unsaturated polyester resin, bromine - containing epoxy resin, etc. 33) Ambient conditions that include toxic gases such as hydrogen sulfide, sulfurous acid, nitrous acid, chlorine, bromine, methyl bromide, ammonium, etc. 34) Polyamide 66 was blended with 35 % of phosphate - bromine - antimony compounding flame retardants an LOI of 33. 35) Both collaborations have also studied the effects of low - energy electron attachment to halo- uracil molecules, in which a halogen atom such as bromine replaces a hydrogen atom. 36) In this paper, the extraction of bromine from seawater and brine was studied with new type macromolecule polyvinylidene fluoride (PVDF) hollow fiber gas membrane. 37) With half-trace law instead of constant law, bromine ethane not iodine ethane reacts to carbolic acid sodium in order to make benzene ether. 38) The preparation and catalytic properties of different bromine - free catalysts were discussed. 39) Petroleum products. Determination of bromine number of distillates and aliphatic olefins. Electrometric method. 40) Strong Chlorine and Bromine Chlorine Hydantoin were used as acute toxicity for fries of Ctenopharyngodon idellus. 41) The testing period of chemical titration was longer bromine content of BBR was lower. 42) Derivatives of bromine are much more active than the corresponding one of chlorine. 42) 43) Various methods are disclosed to remove the hydrobromic acid vapor from the higher molecular weight hydrocarbons and to generate bromine from the hydrobromic acid for use in the process. 44) The content and ingredient as well as origins of impurity in bromoethane made from dregs of bromine at a pharmaceutical manufacturer was analysed through GC and GC-MS. 45) A new pesticide intermediate 3-Bromobenzaldehyde was prepared from benzaldehyde and bromine with anhydrous alchlor as the catalyst in 1,2-dichloroethane solvent. 46) Pharmaceutical and Photographic Grade Potassium Bromide, Ammonium Bromide, Hydrobromic Acid, Lithium Bromide as well as organic bromine flame retardants including Tetrabromobisphenol A and so on. 47) In presence of catalyst AICI_3, the complete bromination of biphenyl in excess bromine can be achieved easily, and the yield of 98% is obtained. 48) A P-N-Br synergistic flame retardant pentaerythritol bisphosphorate tribromoaniline salt was synthesized using phosphorus oxychloride, pentaerythritol, aniline, and bromine as raw materials. 49) Companies to take advantage of the local rich brine resources, focus on the development of brominated flame retardants and pharmaceutical intermediates, such as deep-processing industry bromine. 50) Alkanes can be chlorinated or brominated by treatment with chlorine or bromine in the presence of visible or uv light . 51) He saw that if you take the atomic mass of chlorine, 2 add it to the atomic mass of iodine, divide by two, you get something that is really close to the atomic mass of bromine. 52) The bromine liquid and IR spectrum were used for quality analysis, and the results proved that products were aloin A and aloe emodin. 53) Bromobenzene, magnesium , antimony trichloride and bromine act as raw materials, dibromotriphenylantimony flame retardant is synthesized. 54) The existing bromine in acetic acid could aggravate corrosion on metal hole. 55) Through absorption of bromine vapor(), the electrical conductivity of poly(phenylacetylene) (PPA) was enhanced by 1012 times. 56) An experiment in Japan found certain ingredients of beer , such as pseudouridine , melatonin , and a bromine can lessen the harm done by radiation to the human body . 57) Thiophene reacted with bromine and zinc to produce 3 - bromothiophene via substitution and reduction reaction. 58) Hydroxyzine imine; o ketone at and bromine with chloroform mixed solution reaction. 59) Main product has bromine of chloride, industry, magnesium chloride to wait. 60) Polyaniline(PANI) was synthesised by chemical oxidation method, then doped by bromine vapor and hydrobromic acid, the conductivity of PANI was increased by 11-13 orders of magnitude after doping. 61) Synthesis of 2 - bromothiophene using thiophene and bromine and glacial acetic acid as solvent was studied. 62) Recent research shows that the computer screen can produce a carcinogenic substance called bromine dibenzofuran, which is harmful to human's health. 63) This invention provides concentrated aqueous biocidal solutions formed from bromine chloride, sodium hydroxide, and sulfamic acid. 64) N-butanol was prepared with bromine and hydrobromic acid in the laboratory. 1-bromo-butane Preparation reflux device, product purification, etc. optimal design was discussed. 65) Chlorine water can oxidise common reducing agents. It is stronger oxidising agent than bromine water . It is reduced to colourless chloride ion. 66) The pharmacophore included a hydrogen bond receptor, a hydrogen bond donor, a hydrophobic area and a phenyl ring with a chlorine or a bromine atom. 67) It is showed that bromine anions and charge transfer complex formed in the doping process enhanced the charge carrier concentration then promote the conductivity of PANI. |
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