isinglass (redirected from Eisenglas)

isinglass (ī`zənglăs'), gelatinous semitransparent substance obtained by cleaning and drying the air bladders of the sturgeon, cod, hake, and other fishes. Isinglass is manufactured in Russia, the United States, Canada, Brazil, Indonesia, the West Indies, and the Philippines. It is used in the clarification of wines and beers, as a stiffening for jellies, in court plaster, and in glues and cements. The name isinglass is also commonly applied to thin sheets of mica and sometimes to a gelatinous substance obtained from certain seaweeds.

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muscovite

 or common mica or potash mica or isinglass

Abundant silicate mineral that contains potassium and aluminum and has a layered atomic structure. It is the most common member of the mica group. Because it occurs in thin, transparent sheets, it was used in Russia for window panes and became known as Muscovy glass (isinglass), hence its name. Muscovite is usually colourless but may be light gray, brown, pale green, or rose red. Its low iron content makes it a good electrical and thermal insulator.

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isinglass

a gelatine made from the air bladders of freshwater fish, used as a clarifying agent and adhesive