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Subject: Перевод eqv. в тексте по химии chem. Доброго времени суток!Прошу помочь с переводом заголовка химического текста:
"Method 1 - Hydrolysis with 13 eqv. HCl after solvent removal" Смущают вот эти самые "13 eqv."
Контекст следующий:
Method 1 - Hydrolysis with 13 eqv. HCl after solvent removal
A 500ml distillation apparatus, equipped with a dropping funnel, condenser, stirrer, and drying tubes, was charged with a solution of ethyl magnesium bromide (prepared from 8.21g of magnesium and 35.57g of ethyl bromide) in 130ml of dry ether. A solution of 42g of 2,2-Diphenyl-3-methyl-4-dimethylaminobutyronitrile in 80ml of hot anhydrous xylene was added over a period of 15 min. Solvent was distilled from the reaction vessel until the temperature of the reaction mixture rose to 70-80°C, and the mixture heated under reflux for an additional 4.25 h. The condenser was then arranged for distillation, and a solution consisting of 65ml of concentrated (37.5%) hydrochloric acid and 65ml of water was added to the hot reaction mixture over a period of 10 min, all of the remaining solvent distilling during this addition. The hot suspension was drawn off and the vessel rinsed with 20ml of 18% HCl. The crude crystalline Methadone hydrochloride, which crystallized upon cooling the combined acid solutions, was collected, dissolved in 240ml of boiling water containing 2g of activated charcoal, the solution heated to boiling, filtered while hot, and the charcoal residue washed with 10ml boiling water. A solution of 6.5g of sodium hydroxide in 10ml water was added to the combined filtrates. The Methadone freebase, which solidified on cooling, was collected, dissolved in 100ml boiling methanol, the solution filtered to remove a small amount of suspended solid, heated to boiling, and diluted with water until it became slightly turbid. After cooling and stirring the solution, the fine white crystals of Methadone base were collected, washed with 4 ml of methanol, and dried in vacuo. The dried Methadone thus obtained weighed 42.86g, melted at 76-78°C (91.9% yield). Если угодно, полностью текст находится здесь: http://designer-drugs.com/pte/12.162.180.114/dcd/chemistry/methadone.html Заранее спасибо
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