赤川温泉
Akagawa Onsen- Color
- colorless, slightly milky-turbid
- Taste
- moderately carbonated and moderately bitter
- Odor
- strong hydrogen sulfide
Calcium Sulfate spring
- Calcium Ca²⁺
- settling and calming; can leave a white mineral bloom.
- Sulfate SO₄²⁻
- "gypsum / Glauber's salt" — vessels and wound healing.
- Aches & jointsstiff shoulders
- Skin conditionsatopic skin, eczema
- Circulationtired legs
- Sensitive-skin cautionbroken or dry skin
An acidic cold-mineral spring (21.7 °C) led by calcium and sulfate, with a sulfur character: at the source it turns faintly milky and carries a strong rotten-egg note of H₂S. As a cold-mineral spring below 25 °C it is reheated for bathing. It is rich in metasilicic acid at 96.8 mg/kg, leaving a thin silica film that makes skin feel smoother.
Sampled at drinking fountain·Analyzed Dec 2, 2021·公益社団法人大分県薬剤師会·Cert no. 大薬検第7R-2112000l号