A lifetime ago, I took a course called: "Micro, Semimicro Qualitative
Analysis." We routinely took 10ml of some unknown, and applying
various reagents, isolated what was in it. Finding out which
acid salt should be relatively easy for someone with a modestly
equipped chemistry lab, and a little knowledge.
From my experience with e-scrapping, I learned a few things about
HP inkjet printers. The first is, given time, they will leak out
a cartridge's worth of ink all over the surface below the printer.
I have a permanent reminder of that on one of my granite counter
tops.
You might want to re-think your desire to monkey around with
refilling cartridges for printers that already do a poor job of
containing their allotment of ink.
The second is, the leaked ink seems to be corrosive. Abused
printers (kept in all sorts of orientations, thrown into scrap
pile...) will invariably leak ink... everywhere. The ink tends
to leave copper covered with green corrosion.
The third is, new cartridges are easily found. The prices were
never reasonable, and that fact remains.
-Chuck Harris
On Fri, 04 Oct 2024 17:16:46 -0700 "Frank Mashockie"
<fmashockie@...> wrote:
It could be that Food Black 2 is used but what they have made
confidential is the salt that they use to neutralize the dye.? In
this case Food black 2 has 4 sulfonic acid groups that need to be
neutralized to stabilize it.? Sometimes this is done with Sodium.? It
could be they are using something else that they don't wish to
disclose.? This does have implications for the GC-MS analysis and
sample preparation.? It can make analysis more difficult requiring
some kind of acidic work up to remove the salt.
