ph level increase

[leoesch]

I am playing with  silver cleaning products. I sent the component list to a friend in Korea ....................

ingredient	CAS		percent
water	7732-18-5		69%
c12-15 Alcohol Ethoxylate	68131-39-5	11%
sodium iminodisucconate	144538-83-0	9%
c11 Alcohol Ethoxylate	34398-01-1	7%
ammonium hydroxide	192003-74-0	4%

He claims the pH is 1.5  and wants it to be 2.0.

What can i change to bring it up to at least 2.0?

[McCone]

Take a unit volume [P] of the cleaning product and titrate it to pH 2.0 by using addition of solution [S] of concentration [M] = [A] / [p] , made by dissolving a molar amount [A] of NH4OH into an unit volume [p] of cleaning product.

This way the molar amount [a] of additional NH4OH per unit volume [P] necessary to raise the pH to 2.0 can be calculated using unit volume [s] needed to do this multiplied by concetration [M] = [A] / [p] of solution [S] with minimal alteration to the relative amounts of constituents of the cleaning product.

a = s * M

Adding amount [a] of NH4OH per unit volume [P] of the cleaning product will yield a solution of pH 2.0, while having minimal alteration to the relative amounts of the constituents between the pH 1.5 composition and the composition of pH 2.0 desired can be achieved.

[McCone]

This addition of NH4OH is pretty simple and versatile. Additionally, altering of the original composition is minimal.

Finding the optimal concentration [M] for the solution [S] (used to titritrimetrically determine the required molar amount of NH4OH to be added to reach pH 2.0) might require some experimentation.