Sounds like the bottom line is, just use a PhotoFlo + formalin final rinse for all my color films, whether they be C-41, E-6, or ECN-2
Page 7-4:
View attachment 359249
Besides, since a processed color negative emulsion is essentially gelatin with some dyes, it's inherently prone to microbiological damage as there's no protective silver as there is in B&W film. As such, the requirement of a biocide for optimal archival stability is kind of obvious and inherent to a color negative material.
In the ECN world, film would be typically stored under strictly controlled atmospheric conditions
I wonder if the camera film is even kept around for all productions.
If you look at their catalog, you will see several "anti-calcium" compounds:
View attachment 357053
Their "Anti-Calcium" product seems to be Sodium Hexametaphosphate, which is one of the worst sequestering agents for our purpose: like EDTA it doesn't impede the Fenton reaction, and unlike EDTA it also hydrolyses in alkaline solution. Use it only, if you mix fresh, and if you have issues with water hardness turning your developers milky.
I did not find anything about their "Anti-Calcium #4" product, but Kodak has a sequestering agent with the exact same name, and it's ATMP-Na5, which would be excellent for our work. It may be worthwhile asking the people at Formulary, whether this compound is still available and whether it is indeed what I suspect it is.
看起来,你在这里混淆了很多事情:
CAS 106362-34-9是一种奇怪的肽化合物,据我所知在光化学中没有应用。
该图中的化合物是 1,3-二氨基-2-羟基丙烷-N,N,N',N'-四乙酸,它是一种螯合剂,但很可能不是柯达的抗钙剂 #4。
我已经在您引用的帖子中提到了柯达抗钙#4 的真实结构。
2235-43-03148-72-9
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