Yes.
"Kee-zel-sol"
Chitosan (another fining for alcohol/wine production) is a shellfish derivative. Various sources conflict on whether or not it is allergenic. To existing knowledge, Kieselsol is not made from fish or shellfish products.
Kieselsol is a fining agent used in wine making. Described by the manufacturer to be an "aqueous solution of negatively charged, food grade colloidal silicic acid." Appearance is typically white to off white. removes yeast cells, and other undesirable solids leaving a fresher, cleaner looking wine. Often used in wine kits, quantities will vary depending on the grape (or other fruit) used. Kieselsol is often used sequentially with Gelatin - which is positively charged - in order to remove particles from the wine regardless of their polarity.
In winemaking, kieselsol is typically added before chitosan for effective clarification. If the order is reversed, the chitosan may not bond properly with the particulates, leading to less effective fining and potential haze formation in the wine. This can result in a less clear final product and affect the wine's overall quality and stability. Proper sequencing is essential for maximizing the fining agents' efficacy.