Method to check the percentage purity of Magnesium chloridehexahydrate

[Mridul Tripathi]

Homework Statement

I have a sample of magnesium chloride hexahydrate having some impurities of tri methyl benzene and some other like methyl magnesium chloride and THF(tetra hydro furan).
the problem it that i don't know the exact percentage of magnesium chloride crystals in that sample.
i want to know the purity of MgCl2.6H2O in that.
suggest any methods so that i can calculate that.

Relevant Equations

there are no such equations

In first attempt i flashed the solution with the hot HCl vapours and then fractionation was done to remove the TMB(tri methyl benzene) + THF
the bottom was MgCl2 and some of the TMB +THF
then i washed the solution with 30% HCl + acidic water,since Magnesium chloride is highly soluble in water at low pH and then i recrystallized the sample but Now i am stuck with this Crystals .
and i don't know what to do further/
help me with this or suggest me any other method if possible

 

[nate808]

Dear fellow scientist,

Thank you for sharing your experience with us. It seems like you have encountered some difficulties with your experiment and are unsure of how to proceed. I would be happy to offer some suggestions.

Firstly, it is important to note that the use of hot HCl vapours for flashing the solution can sometimes lead to impurities in the final product. It may be helpful to try a different method for purification, such as vacuum distillation or column chromatography.

Additionally, the use of 30% HCl for washing the solution may also lead to the formation of impurities. It may be beneficial to try a different acid, such as sulfuric acid, for washing the solution.

If you are still having trouble with your crystals, it may be helpful to consult with a colleague or another expert in the field for their advice. They may have encountered a similar issue and can offer some insight.

Lastly, it is important to always keep detailed notes and records of your experiments. This can help in troubleshooting any issues that may arise and can also aid in future experiments.

I hope these suggestions are helpful and wish you success in your research.