Hi all,
I have just made up 100ml of Methyl Red, and have been stiring forever, anyway it doesn't seem to be mixing very well.
Was reading a previous post about cresal red and Rob says to filter. Do we do the same with this or is there something i am missing. I followed the recipe in the science handbook.
Thanks for replys Trish
Thanks for the replys,
I made it up with the suggestions and still found it to congeal(if you know what i mean) and this stuff sort of floated to the top. I hope that it was meant to do that, I was thinking that it would be a red solution. But I checked it and it still worked as it should do.
Thanks trish
mine is red to, with floaties.HA ha ha.
But i did make it with 30% alcohol, anyway its working correctly so thats good.
Thanks heaps, maybe it has to do with the age of the indicator as the bottle looks old and was purchased way before I was here, no date on it.
Trish
Its godd to hear the Methyl Red (Met Red) has worked for you. The good thing about Methyl red is that its is an Orgainic Dye. This means since it is a very long and robust carbon chain and almost has the same make-up of Vitamin D it can be stored for long periods of time.
The solid particles are just those that have not dissolved (and probably won't) and they can be safely filtered. After all the dye changes colour regardles of it final concentration.
And heres one for your Chem teacher if you explain to him/her that the changes are made from the linking and substituion of specific Hydrogen Ions to the outer most parts of the dyes structure it promotes a colour change. After saying that you will be picking them off the floor.
Cheers,
Robb.....
Dr Robert Crosdale. MRACI. NSS. NSSA. NASA.
Ph.D (Chem), Post Grad Ph.D (Physics), M.Ed, B.Sc (Hons), Dip. Appl. Sc. (Chem)
Lake Munmorah High School.
University of New England.
University of New South Wales.
University of Newcastle.
To understand the Universe from our perspective, we need to look towards our own backyard first for answers.
Trish I have sent a PM to you just topping off and reiterating what I have mentioned in the past.
Cheers,
Robb.....
Dr Robert Crosdale. MRACI. NSS. NSSA. NASA.
Ph.D (Chem), Post Grad Ph.D (Physics), M.Ed, B.Sc (Hons), Dip. Appl. Sc. (Chem)
Lake Munmorah High School.
University of New England.
University of New South Wales.
University of Newcastle.
To understand the Universe from our perspective, we need to look towards our own backyard first for answers.
