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Technical Information
How To Use GOHSENOL

Storage Of Aqueous Solutions
Avoid the use of containers which easily rust. As a rust preventative, sodium nitrite or sodium benzoate is effective.

An aqueous solution of N or A type GOHSENOL usually either increases viscosity or causes gelation when left to stand.
The lower the temperature and the higher the saponification degree, the more remarkable this tendency is. In the case of an aqueous solution containing GOHSENOL alone, it usually returns to its former state when the temperature is raised.
G and K type GOHSENOL are less likely to gelate than N and A types (which hardly gelate even at a higher concentration). Sorbic acid, rhodan salt, or a higher alcohol is effective for preventing gelation, if it is slight.

Mildew sometimes grows in aqueous solutions of GOHSENOL.

As a preservative, sodium dehydroacetate, potassium sorbate, or sodium pentachlorophenol are effective (0.01-0.1 weight % to an aqueous solution of GOHSENOL is suitable).

Low Temperature Stability of Viscosity of 10% PVOH Aqueous Solution