釜ノ崎温泉
Kamanosaki Onsen曹
Bicarbonate
Sodium Bicarbonate-Carbonate spring
Cold mineral source · 22°CCold mineral
Composition fingerprint0.5 g/kg dissolved · Hypotonic
Na⁺98
HCO₃⁻72
CO₃²⁻21
◀ CationsAnions ▶
- Sodium Na⁺
- salt's cation — pairs with chloride to make the water salty.
- Bicarbonate HCO₃⁻
- "soda" — softens skin, leaves it smooth.
Known good for
- Smooth skindry, rough skin
- Recoveryfatigue, stress
A sodium bicarbonate cold-mineral spring of the classic Japanese beauty-water family. Alkaline at pH 8.9, it has the slippery, skin-smoothing feel typical of bicarbonate water. The source emerges at just 21.6 °C, below the 25 °C threshold, so it is reheated for bathing. Fluoride is also listed among the components that qualify it as an onsen under the Hot Spring Law.
Analyzed Jan 14, 2022·和歌山県環境衛生研究センター