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That looks like great crystals

But you said also before a Naphtha defat was needed. So which part would you short then?

1. Naphtha defat
2. Aceton extraction
3. Crash out with Benzoic acid

Now the TEK speaks of Fumaric Acid as most members may have this instead, but then until here it would be the same amount of steps I guess? Anyhow benzoic now to me seems cooler for just about any purpose of previously used Fumaric Acid

- just as non-hygroscopic
- much more soluble in acetone
- Most importantly: Much easier to give a definite ratio, as it will crash out 1x Cation instead of 1-2x

[QUOTE="Brennendes Wasser, post: 3864751, member: 36938"] That looks like great crystals :love: But you said also before a Naphtha defat was needed. So which part would you short then? 1. Naphtha defat 2. Aceton extraction 3. Crash out with Benzoic acid Now the TEK speaks of Fumaric Acid as most members may have this instead, but then until here it would be the same amount of steps I guess? Anyhow benzoic now to me seems cooler for just about any purpose of previously used Fumaric Acid - just as non-hygroscopic - much more soluble in acetone - Most importantly: Much easier to give a definite ratio, as it will crash out 1x Cation instead of 1-2x [/QUOTE]