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View Full Version : Ink Chemistry Primer: Determining pH



Chemyst
April 30th, 2013, 07:38 PM
https://c2.staticflickr.com/2/1595/24771983914_9f20049914_b.jpg
https://c2.staticflickr.com/2/1683/25035007629_9f8e8a0fcc_b.jpg

cedargirl
April 30th, 2013, 11:59 PM
Thanks for that too. I've been wondering lately about ink pH. I received a package of ink from an o/s supplier the other day and it came with a generic MSDS that covered 19 brands of ink (all the likely suspects). The most interesting fact on the sheet was the ink pH, wher it said:

"General pH: 2-8 (depends on colour)"

Now I'm wondering which colours come in at pH 2. And also whether there was a brand difference, at all.
Yeeks! If it doesn't damage the sacs, won't it damage the paper long-term?

But, having said that, I'm not going to spend $150-600 to find out. I did consider asking the various ink manufacturers to supply individual MSDSs, but hey, I guess it's not that important.

Chemyst
March 1st, 2016, 03:05 AM
Image restored. Thanks to everyone who emailed to let me know the link was broken!