Complaint Casebook White Crystals in Wine

At the bottom of the white wine bottle, I found a small white crystal-like solidification.

Calcium mucus acid

Calcium tarcate

Potassium tubate

• Overview: A small white precipitation of several mm was found on the bottom of the bottle.
• Solubility: Insoluble in water
• Combustion: Burning and carbonization
• Infrared spectroscopy: We found a spectrum similar to calcium mucusic acid.
• X-ray analysis: Detection of calcium and potassium
• Scanning electron microscope: Crystalline solids with a side of several tens to 100 μm

Calcium mucus acid derived from wine components is precipitated and does not harm the body.
It is often found in wines with high sugar from Germany.

Other tartars produced in wine include potassium tartarite and calcium tartarite. In the case of red wine, the precipitation of hydrogen potassium tarate containing the pigment of wine is seen.

Published on March 8, 2007