Terry,
Next time you have a student studying things along those lines, try Guignet’s
green. I can refer you to at least one good DoD document about it if you’re
interested.
Best.
Anthony J. Cesaroni
President/CEO
Cesaroni Technology/Cesaroni Aerospace
<http://www.cesaronitech.com/> http://www.cesaronitech.com/
(941) 360-3100 x101 Sarasota
(905) 887-2370 x222 Toronto
From: arocket-bounce@xxxxxxxxxxxxx <arocket-bounce@xxxxxxxxxxxxx> On Behalf Of
Terry McCreary
Sent: Monday, July 8, 2019 8:30 PM
To: arocket@xxxxxxxxxxxxx
Subject: [AR] Re: Malori Blue
My understanding is that milori (sp) blue is one of the "iron blues". I've
heard it stated that milori is simply another name for ferric ferrocyanide AKA
prussian blue; I know I've seen the name somewhere in the past and it referred
to prussian blue. Prussian blue is C18Fe7N18, or Fe4(Fe(CN)6)3. Perhaps the
entry in PEPCODED is simply incorrect---it certainly wouldn't be the first one.
From Brittanica, which isn't entirely reliable:
Prussian blue, any of several deep-blue pigments that are composed of complex
iron <https://www.britannica.com/science/iron-chemical-element> cyanides and
hence called iron blues. The most common of these pigments are Prussian,
Chinese, Milori, and toning blue. Prussian blue has a reddish tint and is used
almost exclusively in paints, enamels, and lacquers; Chinese blue is very dark,
with a greenish tint, and is favoured for use in printing inks; Milori blue has
a reddish tint; toning blue is dull, with a strong red tone. All these pigments
are chemically similar, differences in shade arising from variations in
particle size and details of the manufacturing process.
Prussian blue is an interesting burn rate catalyst for APCP. Some years back I
had one of my students do a research project involving it. She prepared
propellants containing 0.1, 0.3, 1, and 3% prussian blue. The burn rate of a
rather ordinary APCP with 1% PBlue was on the order of half an inch per second,
at about 600 psi. The exponent was around 0.6 if memory serves. We never
tested the 3% mix...she was willing, I wasn't. :-)
Best -- Terry
On 7/8/2019 5:03 PM, Barry Jolly wrote:
Ammonium ferricyanide
<https://pubchem.ncbi.nlm.nih.gov/compound/Ammonium-ferricyanide>
Ammonium ferricyanide
Ammonium ferricyanide | C6H12FeN9 | CID 17756739 - structure, chemical names,
physical and chemical properties, ...
On Monday, July 8, 2019, 5:01:29 PM EDT, info@xxxxxxxxxxxxxxxxxxxxxxxx
<mailto:info@xxxxxxxxxxxxxxxxxxxxxxxx> <mailto:info@xxxxxxxxxxxxxxxxxxxxxxxx>
<info@xxxxxxxxxxxxxxxxxxxxxxxx> wrote:
Hi Guys,
What is this compound shown in one of the PEPCODED lists?
1127 malori blue 4h 1c 7n 2fe +394 .0665
The name is suggestive of Ammonium Ferricyanide (prussian blue) which has
all the same elements but the ratios are all wrong.
Trying to imagine a structure for it is foggy but clearly it has little, if
any, cyano in it. It seems it would be very strained and probably unstable.
The heat of formation says its sexy.
The high nitrogen content says BANG!
The Iron says it could be a good burn rate catalyst.
An exotic/expensive nitrogen compound if it even exists.
It certainly looks interesting.
Doesn't show up in google. A Chemspider elemental compound search yields
nothing for this combination.
What is it?
Thank you,
Tony S. Colette
--
Dr. Terry McCreary
Professor Emeritus
Murray State University
Murray KY 42071
