22 replies to this topic

[Niladmirari]

My research color mix. Compositions for stars.

 

Base red:

NH4ClO4 - 60%
Sr(NO3)2 - 15%
hexamethylenetetramine - 20%
resin - 5%

 

 

Base green:

NH4ClO4 - 60%
Ba(NO3)2 - 15%
hexamethylenetetramine - 20%
resin - 5%

 

 

Base blue:

NH4ClO4 - 60%
CuCl - 15%
hexamethylenetetramine - 20%
resin - 5%

 

 

Base yellow:

NH4ClO4 - 70%
Na2C2O4 - 10%
hexamethylenetetramine - 15%
resin - 5%

 

 

Violet:

12% red + 88% blue

 

 

Purple:

25% red + 75% blue

 

 

Magenta:

50% red + 50% blue

 

 

Turquoise:

12% green + 88% blue

 

 

Aqua:

20% green + 80% blue

 

 

White blue:

25% green + 75% blue

 

 

Orange:

12% yellow + 88% red

 

 

Yellow green:

12% yellow + 88% green

 

Edited by Niladmirari, 21 February 2014 - 04:21 AM.

[Shizznt]

Nice colors Niladmirari. 

The blue looks pretty good on the ground. 

What would you use as a prime for these stars? 

[asdercks]

wow! that blue color sure looks nice!!!

[AzoMittle]

Very impressive, great work

[Niladmirari]

What would you use as a prime for these stars? 

Prime:

KClO4 - 70%
C - 25%
resin - 5% (ethanol)

 

Or:

KClO4 - 70%
C - 25%
resin - 5%

nitrocellulose - 5% over 100% (acetone)

 

resin it:

 

 

 

[burningRNX]

Nice compositions.

The look similar to some of engagers formula's listed somewhere here

 

What kind of CuCl do you use? the "green stuff"? or the pure white version?

[swapnilsutar1988]

well done Niladmirari...!!
Keep it up..:-):-)

[Niladmirari]

What kind of CuCl do you use? the "green stuff"? or the pure white version?

Green

[burningRNX]

Do you have the same reaction happening with hexamine and (green) CuCl?
I wonder what it might be, very anoying collor changing of the mixture when wetted with any solvent

Edited by burningRNX, 23 February 2014 - 09:49 AM.

[Mumbles]

I don't know why you think it's odd or annoying that you get a color change when mixing transition metals and coordinating compounds.  Copper (II) chloride, a component of green "copper (I) chloride", is known to form complexes with hexamine.  It looks like it makes a brown compound in the neutral state.  Different species form from acidic or basic solution.  From what I can tell, copper (I) chloride can interact with it as well, but I haven't been able to find any colors or properties of that. 

[Niladmirari]

Hexamethylenetetramine - very bad complexing agent. Compare it with a similar protonation constant in ammonia, the difference of the order of 4.

I used CuCl. In reality it: 3Cu (OH)2*CuCl*H2O or CuCl + Cu2OCl2:

 

 

Edited by Niladmirari, 25 February 2014 - 04:32 AM.

[Mumbles]

I'd love to hear your explanation for how the pKa relates to binding strength to a metal.  I've even included the relevant pKa's for you.

 

Ammonia: 9.3

Hexamine: 6.2

 

 

While we're on the subject of your bullshit science, I think you're trying to write the formula 3Cu(OH)2*CuCl2*H2O, which is the formula for copper oxychloride.  That horrific excuse for a drawing you posted has absolutely nothing in common with the formula you posted, nor the actual structure of copper oxychloride.  Additionally, it's entirely Copper (II).  You may want to notice that the page below for the industrial sale of copper oxychloride has the exact same picture that you purport for your copper (I) species. 

 

http://vimalcropcare...88--283817.html

 

 

http://vimalcropcare...88--283817.html

[Niladmirari]

I apparently incorrectly translated your text.  

9.3 -  6.2 = 3,1

According to my information 10 - 6 = 4 (difference of the order of 4).

 

White copper chloride (1) when stored in air turns green. He used. You can use copper oxychlorid instead of him.

Edited by Niladmirari, 25 February 2014 - 02:57 PM.

[Niladmirari]

Most importantly - when mixed hexamine and copper chloride I have not seen the reaction. 

Edited by Niladmirari, 25 February 2014 - 02:31 PM.

[Mumbles]

I apparently incorrectly translated your text.  

9.3 -  6.2 = 3,1

According to my information 10 - 6 = 4 (difference of the order of 4).

 

White copper chloride (1) when stored in air turns green. He used. You can use copper oxychlorid instead of him.

 

 

That still offers absolutely no explanation as to how pKa relates to bond strength to metals.  I wasn't arguing that ammonia is more basic than hexamine. 

[burningRNX]

Most importantly - when mixed hexamine and copper chloride I have not seen the reaction.

Whitch would be? pure (white) CuCl in the dry state mixed with hexamine? or wetted?

[Niladmirari]

Whitch would be? pure (white) CuCl in the dry state mixed with hexamine? or wetted?

I bought copper chloride. He looked like this:

http://en.wikipedia....I)_chloride.jpg  (green)

 

Components are mixed in dry form. Stars do in acetone or ethanol.

[Niladmirari]

I think admixture of formaldehyde can recover copper.

[louie]

I have always wondered why these formulae are not more popular.
I have been a fan of these for many years. I think most people don't like to use Ammonium Perchlorate. These formulae are however very populae in lance.
Another one I like is
Ammonium Perchlorate  80
Copper Benzoate           17
Dextrine                           4

[Mumbles]

I would think that the lack of availability of copper benzoate is largely responsible.  Ammonium perchlorate has it's own set of issues, but a lot of people are not willing to synthesize their own chemicals.  It's becoming more available, but it's still expensive enough to not be extremely popular compared to other commercially available colorants.