
plating, anodizing, & finishing Q&As since 1989
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Interchanging anhydrous and hydrated products
2002
Q. Are sodium metasilicate anhydrous and sodium metasilicate pentahydate interchangeable for mixing with other products?
Anthony Natalini- Oneonta, N.Y. U.S.A.
2002
A. The pentahydrate is 42 percent or so water and only 58 percent or so sodium metasilicate. So the formulations have to be radically altered at the very least. What other effects need to be taken into account is hard to say from this distance.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey

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