How shoud one switch off a rotary vane pump?

How shoud I switch off a rotary vane pump? Should I initially turn off the pump and then open the shutter to normalize the pressure? Or the order of the actions should be vice versa?

07 August 2019 3,249 3 View

Which type of bonds is more preferable when drawing chiral centers?

Which type of bonds is more preferable when drawing chiral centers? Wedged and hashed wedged/hollow wedged bonds or bold and hashed bonds?

02 March 2018 4,348 1 View

How should one name an 1,3-dicarbonyl compound existing in enol form? According to IUPAC, should it be named as 1,3-dione or 3-hydroxy-2-en-1-one?

How should one name an 1,3-dicarbonyl compound existing in enol form? According to IUPAC, should it be named as 1,3-dione or 3-hydroxy-2-en-1-one?

01 February 2018 4,525 0 View

What difference in total energy (kcal/mol) is considered to be significant?

I optimized two diastereomers in GAUSSIAN and got two values of total energy. So, I need to decide are these diastereomers energetically equal or one of them is more preferable termodinamically....

05 June 2017 274 5 View

What compound does result from Lawesson's Reagent after it thiolates smth?

What compound does result from Lawesson's Reagent after it thiolates smth?

10 November 2016 3,256 2 View

How to obtain dry DMF saturated with dry HCl?

How to obtain dry DMF saturated with dry HCl?

09 October 2016 1,203 4 View

Does anybody have experience in ordering chemicals from Star Synthesis Co., Ltd? What was their contact information?

Does anybody have experience in ordering chemicals from Star Synthesis Co., Ltd? What was their contact information?

05 June 2016 4,722 1 View

Does anybody know where I can buy Ethyl 2-amino-4-methyl-5-phenylthiophene-3-carboxylate (CAS 4815-38-7)?

05 June 2016 243 2 View

Why carboxyl group is inactive in Diels-Alder reaction?

Are there any examples of Diels-Alder reaction in which carboxyl group (in acids or esters) acts as a part of a dien or a dienophile? What are the reasons of its inactivity in this reaction?

31 December 2014 2,512 3 View

Ester cleavage conditions?

Hi all, I need to cleave the ester in Ethyl 2-amino-1H-imidazole-5-carboxylate to make the carboxylic acid and retrieve the product from solution to use in downstream applications of linking to...

01 March 2021 8,766 3 View

How to predict the reaction pathway for electro organic synthesis?

Can anyone recommend some any software/models available that can predict substance reactivities and the reaction yield under a specific set of reaction conditions process and proposing pathways to...

17 February 2021 2,383 3 View

Why is Fermented Plant Juice (FPJ) always diluted with water? Could it be diluted with other solvents such as rice water?

I am currently making a research paper with my classmates in Philippine Science High School and we are trying to find references that mixed Fermented Plant Juice with other solvents instead of...

17 January 2021 5,099 4 View

Italicization in molecule name: N-acetyl-p-benzoquinoneimine (NAPQI)?

Is there a convention for correct italicization of abbreviated parts of chemical molecule names? For...

13 January 2021 7,396 3 View

Was there any pesticide disasters other than Bhopal and Kasaragood tragedy around the globe?

Pesticides become prime compo in agricultural activities to meet the growing demand of the human population. But indiscriminate usage and mishandling led to two disasters in India such as Bhopal...

11 January 2021 3,790 7 View

Can I predict properties of chemicals via any Bioinformatics tool?

I want to know chemical properties such as repellent tendency.

05 January 2021 4,797 3 View

Are there any remarkable processes in practice to valorise both solid and liquid contents of city waste to fine chemicals?

Could anyone please suggest me a good texts/methods about city waste management towards the fine chemical ends? I am interested to develop methods to process both solid and liquid parts to...

01 January 2021 6,201 5 View

How can we choose the right method for Gaussian calculations?

I'm not working on biomolecules, I work on Organic, Organometallic, and sometimes inorganic structures. Do you know a simple way to apply the right calculation method? Is there any article or...

10 December 2020 3,396 5 View

How can we sell chemistry to the public?

Chemistry is frequently termed the "central science". It underlies the foundation of modern civilization (drugs, plastics, textiles, dyes, fertilizers etc.), but the public perception of chemistry...

30 November 2020 1,113 15 View

How to reduce pH of a liquid solution?

Hello, Everyone! I am working on TiO2 composites and our prepared materials solution has a pH of 13 which is totally basic, and the process of pH value decrement is too slow could any please...

11 November 2020 7,467 10 View