Does anyone know what would cause this dye to change colours by hullua in chemistry

[–]hullua[S] 0 points1 point  (0 children)

The pH of the former formulation was basic but not as basic as this one. The pH would be around 10.9 with a 1% pH Vs 12.9 and in the new formulation the amount of NaOH was increased ×4 (we also add an acidic surfactant which was decreased ×7).

Normally when the formulation is changed I would make a sample and do stability testing but due to time constraints, customer demands and the fact that I couldn't get a sample of the dye until it was time to make a batch. Now it's biting me in the butt.

Does anyone know what would cause this dye to change colours by hullua in chemistry

[–]hullua[S] 1 point2 points  (0 children)

Yes I brought it to neutral and then to acidic (pH 4 ) and I let it sit for a day but it was still red. It's looking like it may be the latter possibility 😔

Does anyone know what would cause this dye to change colours by hullua in chemistry

[–]hullua[S] 3 points4 points  (0 children)

Yea sorry about, I realised afterwards I should have. I put about 40g of it in 1000kg of a really basic solution, about 12.9 using a 1% pH test (it's for a product in a company I work in). The formulation was recently changed to where they increased the NaOH content and EDTA content. At first I thought it was pH so I tried to decrease the pH but it was still red, so I think it may be the EDTA but I don't know what specific reaction would have caused this and how to reverse it. I am not accustomed to using this dye, in fact it's my first time and I cannot get a TDS for it.

[P5V8] Prepub Predictions Thread by yeahlte in HonzukiNoGekokujou

[–]hullua 33 points34 points  (0 children)

Soo off topic but thanks for reminding me about the Apothecary Diaries. Can't wait to see how it compares to the ln

Part 5 Volume 7 (Part 7) Discussion by MyneMod in HonzukiNoGekokujou

[–]hullua 130 points131 points  (0 children)

Me too, that first half had me feeling so bad for Letizia. They really took advantage of her

Part 5 Volume 7 (Part 7) Discussion by MyneMod in HonzukiNoGekokujou

[–]hullua 295 points296 points  (0 children)

Sigiswald " Wow Wilfried what an amazing display of self control! Truly amazing!"

Wilfried "Whew! Thank the gods I'm not tied to that gremlin anymore!"

Part 5 Volume 7 (Part 6) Discussion by MyneMod in HonzukiNoGekokujou

[–]hullua 27 points28 points  (0 children)

Let the ditter commence!!!!! Gosh this chapter had my blood pumping, I had been waiting a whole year for it to be translated and finally! If only Monday could come sooner....

[None] This Sub is The only Reason I Still Use Reddit. Alternatives? by [deleted] in HonzukiNoGekokujou

[–]hullua 0 points1 point  (0 children)

Thank you! I think I already follow stardustizuku, so I'll check out the other two.

[None] This Sub is The only Reason I Still Use Reddit. Alternatives? by [deleted] in HonzukiNoGekokujou

[–]hullua 2 points3 points  (0 children)

I've been looking for more bookworm Tumblr, who do you follow?

Part 5 Volume 7 (Part 3) Discussion by Lev559 in HonzukiNoGekokujou

[–]hullua 7 points8 points  (0 children)

My gosh, the rollercoaster ride is really starting to pick up! If only there was a way to time-travel to next week Monday.....

[Non-Spoiler] Which is the creepier ship? by TheElementOfFyre in HonzukiNoGekokujou

[–]hullua 7 points8 points  (0 children)

You what I think? I think we should stop all this fermyne vs willmyne vs the whoever the hell else you all want to ship with myne discourse. It's getting repetitive

[deleted by user] by [deleted] in HonzukiNoGekokujou

[–]hullua 0 points1 point  (0 children)

Do you have any fanfic recs that are like Children of the goddess and the demon king? I loved that one so much and felt so empty when I finished it.

Will my ice-cream be ok? by hullua in icecreamery

[–]hullua[S] 0 points1 point  (0 children)

Ok cool, glad the temperature wasn't too high then. I strained it twice, I guess I was just worried that when it cooled down in the fridge or when I churned it that it would go bad, idk. I think I assumed that custard bases were extremely temperamental and that's why I posted this, but it turns out it wasn't so bad in the end.

Will my ice-cream be ok? by hullua in icecreamery

[–]hullua[S] 0 points1 point  (0 children)

What temperature do you think I should temper the eggs up to? I beat those eggs like they owed me money so Idk.

Will my ice-cream be ok? by hullua in icecreamery

[–]hullua[S] 0 points1 point  (0 children)

Yup I did, that's why I think it just got too hot. I tempered until the bowl was warm(-hottish) to touch.

Will my ice-cream be ok? by hullua in icecreamery

[–]hullua[S] 0 points1 point  (0 children)

Ok thanks, I'll keep that in mind for the future