Quaternary Ammonium Compounds. 1  1. Quaternary Ammonium Compounds Quaternary ammonium cations, also known as quaternary ammonium salts, quaternary ammonium compounds or Quats, are salts of quaternary ammonium cations with an anion. General structure and examples of quaternary ammonium compounds (QACs) The quaternary ammonium compounds contain a hydrophobic has an oily character and thus it repels water. 2  When absorbed on surfaces this oily group extends outwards from the surface as illustrated below: 2.
a vaginal yeast infection is a fungal infection that causes irritation discharge and intense itchiness of the vagina and the vulva the tissues at the vaginal openingit s a type of vaginitis or inflammation of the vagina vaginal yeast infection is a fungal infection that causes irritation discharge and intense itchiness of the vagina and the vulva the tissues at the vaginal opening
Symptoms. Yeast infection symptoms can range from mild to moderate and include: 1  Itching and irritation in the vagina and the tissues at the vaginal opening (vulva). 2  A burning sensation, especially during intercourse or while urinating. 3  Redness and swelling of the vulva. 4  Vaginal pain and soreness.5  Vaginal rash.ou might have a complicated yeast infection if: 1  You have severe symptoms, such as extensive redness, swelling and itching that leads to tears or cracks (fissures) or sores. 2  You have four or more yeast infections in a year. 3  Your infection is caused by a type of candida other than Candida albicans. 4  You're pregnant.