| 词汇 | thiocyanate |
| 释义 | BETA Examples of thiocyanatethiocyanate isn’t in the Cambridge Dictionary yet. You can help! It then reacts with the thiocyanic vapour to generate the thiocyanate derivative (i). When half of the thiocyanate solution was added, 25 ml of glacial acetic acid was dropped and the solution was stirred for two more hours. Ammonium thiocyanate may have played a significant role in prebiotic chemistry. The first one, which eluted with water, corresponds to the thiocyanate ion that did not react. In principle, thiourea could also be formed, as a result of the isomerization of thiocyanate : ! This band indicates that thiocyanate ion - still persists. A concentrated solution of ammonium thiocyanate was mixed with 50 % sulfuric acid and kept on ice. As described above, each of these fractions was analysed for the presence of amino acids, ammonium thiocyanate and formaldehyde. Isodithiocyanic acid was obtained when ammonium thiocyanate reacted with either acetic anhydride or acetic acid. Ammonium thiocyanate in trifluoroacetic acid and acetic anhydride is added to the peptide, the strong acid protonates the carboxyl group, activating it. Thiocyanate space in growing domestic fowl. In so far as there is any toxicity—which is by no means firmly established—it derives it from the phenols and thiocyanates. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 This can be done by heating an aquous mixture of cephalotin, thiocyanate, pyridine and phosphoric acid for several hours. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It degrades to 4-hydroxybenzyl alcohol and a thiocyanate ion, which are not pungent. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is produced by the methylation of thiocyanate salts. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Activation of the lactoperoxidase system by addition of hydrogen peroxide and thiocyanate extends the shelf life of refrigerated raw milk. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A laboratory synthesis entails the reaction potassium thiocyanate and sulfuric acid. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Most preparations of episulfides utilize a two-step method, converting an olefin to an epoxide before its conversion to the episulfide using either thiocyanate or thiourea. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. |
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