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Pyridine–Acetic Anhydride

Russian translation: смесь пиридина с уксусным ангидридом (3:1 об./об.)

17:33 Dec 29, 2017
English to Russian translations [PRO]
Medical - Medical: Pharmaceuticals
English term or phrase: Pyridine–Acetic Anhydride
Transfer the Sample into a 150-mL acetylation flask fitted with an air condenser.

Add 5.0 mL of Pyridine–Acetic Anhydride Reagent, and attach the air condenser.

Heat the flask in a water bath for 1 h keeping the level of the water about 2.5 cm above the level of the liquid in the flask.

Withdraw the flask, and allow to cool.

Add 5 mL of water through the upper end of the condenser.

If a cloudiness appears, add sufficient pyridine to clear it, noting the volume added.

Shake the flask, and replace in the water bath for 10 min. Withdraw the flask, and allow to cool.
Maxim Polukhin
Local time: 19:06
Russian translation:смесь пиридина с уксусным ангидридом (3:1 об./об.)
Explanation:
pyridine-acetic anhydride reagent (mix 3 volumes of freshly distilled pyridine with 1 volume of freshly distilled acetic anhydride).
https://books.google.ru/books?id=xUkrAAAAYAAJ&pg=PA905&lpg=P...–Acetic+Anhydride+Reagent"&source=bl&ots=8Ac3HBQcqX&sig=E-zP_uTxF-dtk3fUJAkVcfGSWTs&hl=ru&sa=X&ved=0ahUKEwjI-6bz4K_YAhViYpoKHaGiD8oQ6AEITzAI#v=onepage&q=%22Pyridine%E2%80%93Acetic%20Anhydride%20Reagent%22&f=false
Selected response from:

Leila Usmanova
Local time: 19:06
Grading comment
Спасибо!
4 KudoZ points were awarded for this answer



Summary of answers provided
4 +3смесь пиридина с уксусным ангидридом (3:1 об./об.)
Leila Usmanova


  

Answers


6 mins   confidence: Answerer confidence 4/5Answerer confidence 4/5 peer agreement (net): +3
pyridine–acetic anhydride
смесь пиридина с уксусным ангидридом (3:1 об./об.)


Explanation:
pyridine-acetic anhydride reagent (mix 3 volumes of freshly distilled pyridine with 1 volume of freshly distilled acetic anhydride).
https://books.google.ru/books?id=xUkrAAAAYAAJ&pg=PA905&lpg=P...–Acetic+Anhydride+Reagent"&source=bl&ots=8Ac3HBQcqX&sig=E-zP_uTxF-dtk3fUJAkVcfGSWTs&hl=ru&sa=X&ved=0ahUKEwjI-6bz4K_YAhViYpoKHaGiD8oQ6AEITzAI#v=onepage&q=%22Pyridine%E2%80%93Acetic%20Anhydride%20Reagent%22&f=false

Leila Usmanova
Local time: 19:06
Specializes in field
Native speaker of: Russian
PRO pts in category: 2661
Grading comment
Спасибо!

Peer comments on this answer (and responses from the answerer)
agree  Andrey Svitanko: обогнали
1 min
  -> Спасибо!
agree  Pavel Nikonorkin
2 mins
  -> Спасибо!
agree  svetlana cosquéric
3 hrs
  -> Спасибо!
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