Rana Hakimi

5 Questions 3 Answers 0 Followers

Questions related from Rana Hakimi

Do the organic compounds have an expiry date ?

I used the chemical compound dimedone, which was purchased 13 years ago, as a starting material for the synthesis of other compounds, but unfortunately, it was contaminated with two other...

28 November 2023 6,120 8 View

How to determine the order of elution in silica gel column chromatography? and what are the mistakes that make wrong order elution?

I tried to separate two compounds by column chromatography on silica gel, the elution order was the bottom in TLC— comes off first and the top in TLC— comes off the column last).

11 September 2023 5,726 6 View

I added mistakely the oil to the oil mist filter opening of the dry vacuum pump, what will happen and how I can fix this problem?

07 September 2023 8,135 1 View

I want to separate dimethyl-6,7-benzofuranone by using liquid column chromatography, which is the best system that I can use?

I couldn't find the best system, can you help me?

03 July 2023 538 3 View

I tried to find a system to separate dimethyl-6,7-benzofuranone by using TLC but a big pigment appeared on the top of the TLC layer, Why?

I tried to find a system to separate dimethyl-6,7-benzofuranone by using Thin Layer Chromatography but a big pigment appeared on the top of the TLC layer. what is the problem?

03 July 2023 7,635 5 View