Actually, you can use it directly in case you use an initiator for the polymerization; often the MeHQ is used as a stabilize at 0.01%, and the initiator we use is 1%, so it is ok to use it as it is, but if you need to remove it you can use basic alumina purification column

Dear all, if used directly just use excess of the initiator concentration to count the part that is consumed by the hydroquinone. In the other case, distillation is more prefered as column chromatography is associated with an appreciable loss of the monomer. My Regards

Thanks for your suggestions@Abdelkader and Mahmoud. They are timely and pricise. I want to ask@Abdelkader to give an idea of the ratio of monomer to the initiator in excess of the initiator that would do or take care of the MEHQ, just a rough estimate. THANKS

No thanks. Normally, you have decided about the amount of the initiator to use, since this will determine the required properties you are targetting, mainly the MW. To this amount just add the equivalent molar amount to that of the inhibitor contained in the amount of the monomer to be taken. This is just a rough approximation. Good Luck in your work

Thanks for these suggestions. I have settled for the initiator approach. But I am left with more questions than answers. In my original procedure, I am suppose to carry out a partial neutralisation of the monomer to get acrylate before the main polymerisation. Can I still go ahead with this and adding excess initiator during the polymerisation @ Abdelkader, @Mahmoud, can't wait to hear from you. Thanks

Both are polymerized, i.e., neutral and salt forms of acrylic acid. Please refer to the following chapter for complete overview. My Regards

https://doi.org/10.1016/B978-0-12-618502-7.50014-3

Thanks

Thanks

Distillation of acrylic acid (AA) is a dirty job. This is mainly because of the fact that a lot of polymeric residue is generated. In addition to this the distilled product, that is pure AA has a great tendency towards formation of oligomers through additions and successive addition of the acidic -OH group of one molecule to the double bond of another molecule.

Keeping the above-mentioned points in view, a probable solution to your problem is to carry out distillation under reduced pressure and use-up the freshly distilled AA as soon as possible for your reaction.

@Ashis thanks for this information.