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Some questions about my SLS powder
I purchase SLS powder locally and the supplier imports it. They say it has 95% active surfactants.
It has very high ph and it needs a lot of acid to reduce pH to 7.
2% of this SLS powder needed 1.5% citric acid to reduce pH to 7.
Today i added LABSA instead of citric and 5% of it reduced the pH to 7.
Questions:
1. Is it normal that 1.5% citric acid reduce the pH the same as 5% LABSA?
2. How much base would be in this 2% SLS powder that it needs 1.5% citric acid or 5% LABSA to reduce pH to 7?
Also, i mixed sodium hydroxide with 1.5% citric acid and 0.9% sodium hydroxide was needed to increase pH of 1.5% citric acid to 7. Does this mean my 2% SLS powder has ~0.9% sodium hydroxide in it? It is 45% of it’s weight.
I am very confused right now.
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