May 20, 2019, 05:08:36 PM
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Topic: Sodium Tripolyphosphate  (Read 127 times)

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Offline pcm81

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Sodium Tripolyphosphate
« on: April 28, 2019, 12:56:41 PM »
Can tripoly phosphate be used in place of hypophosphate as a reducing agent in electroless Nickel plating since they both are phosphates with fewer O atoms per P atom than regular phosphate ion?

Usually i use sodium phosphite or sordium hypophosphite (NaPO3 or NaPO2). The Na5O10P3 has 10/3 O per P... Can it reduce Ni+

Offline chenbeier

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Re: Sodium Tripolyphosphate
« Reply #1 on: April 28, 2019, 01:11:28 PM »
No, for reducing of Nickel  the amount of oxygen is not important. It is the oxidations number of the phosphorous. In your polyphosphate it is +5 and not able to work,
In hypophosphite it is +1 and in Phosphite it is +3.

By the way Sodiumhypophosphite is NaH2PO2 and sodium phosphite is Na2HPO3

Offline pcm81

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Re: Sodium Tripolyphosphate
« Reply #2 on: April 28, 2019, 05:17:59 PM »
No, for reducing of Nickel  the amount of oxygen is not important. It is the oxidations number of the phosphorous. In your polyphosphate it is +5 and not able to work,
In hypophosphite it is +1 and in Phosphite it is +3.

By the way Sodiumhypophosphite is NaH2PO2 and sodium phosphite is Na2HPO3
Thanks

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