Looking for Sudan III (Sudan Red) or substitutes...

Quote: Originally posted by nimgoldman

Unfortunately, I am from EU and eBay does not show any results from nearbly - it's either from US, some vintage bottles and lots of postcards of "Bank of Sudan". I will try look up some EU vendors that sell to individuals... Hmmm... there IS the item on eBay, but for some reason global eBay does not show them!

Quote: Originally posted by Johnny Windchimes

https://www.scbt.com/p/sudan-iii-85-86-9 These guys ship overseas, also their prices AREN'T rediculous for some reason; most legit supply houses are overpriced or don't sell to individuals. 25 grams will last you quite awhile~! Shipping might be more than the item costs but its like a one-time purchase; It's been over a year and I'm still going through my 10 grams of bromophenol blue and I use it all the time!!

YOU....

....Are absolutely right

I emailed them and indeed that is their policy regardless of where you are in the world it would seem.


A few possibilities:

1) I put in my bromophenol blue order over a year ago and their policy was different then (unlikely).

2) I emailed them first from my university address to chat, with my signature block and department affiliation, and that broke the ice either accidentally or otherwise (more likely but still unlikely).

3) It's just a dye, no HAZMAT entanglements to speak of, so I had it shipped to my res on campus at the time, with the university address clearly visible, and they didn't bother to check to see if it was a chemistry department office or a student dorm (the most likely).


Looks like I slipped through the cracks on that one.... my sincere apologies for advocating that company. I managed to snag half a gram of Sudan III from my chem department (I know, I know, COVID says I can't visit.... but I did, and it was empty) so I'm all set, but now that I know that company is off limits, I'm kinda bummed about not being able to legit buy more

[Edited on 13-5-2020 by Johnny Windchimes]

Quote: Originally posted by Johnny Windchimes

YOU.... ....Are absolutely right I emailed them and indeed that is their policy regardless of where you are in the world it would seem. A few possibilities: 1) I put in my bromophenol blue order over a year ago and their policy was different then (unlikely). 2) I emailed them first from my university address to chat, with my signature block and department affiliation, and that broke the ice either accidentally or otherwise (more likely but still unlikely). 3) It's just a dye, no HAZMAT entanglements to speak of, so I had it shipped to my res on campus at the time, with the university address clearly visible, and they didn't bother to check to see if it was a chemistry department office or a student dorm (the most likely). Looks like I slipped through the cracks on that one.... my sincere apologies for advocating that company. I managed to snag half a gram of Sudan III from my chem department (I know, I know, COVID says I can't visit.... but I did, and it was empty) so I'm all set, but now that I know that company is off limits, I'm kinda bummed about not being able to legit buy more [Edited on 13-5-2020 by Johnny Windchimes]

Quote: Originally posted by nimgoldman

I am looking for Sudan III dye to use it as indicator in ozonolysis. I could only find Sudan IV, which is - like Sudan III - also used for dyeing lipid tissues. I don't know if I can substitute Sudan III for IV in ozonolysis, but all sources I found used III specifically... Local chemical supply houses I found, who have it, don't sell to individuals. Maybe a gas washing bottle with KI solution to detect ozone absorbtion would also do? I don't want to "over-ozonize" my sample compound so having Sudan III would be great...