釜ノ崎温泉
Kamanosaki Onsen曹
Bicarbonate
Classification
Sodium Bicarbonate-Carbonate spring
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.
Source temperature
21.6°C
Cold mineral
Tonicity
0.51g/kg
Hypotonic
Free CO₂
0.50mg/kg
Low
Highlights
- Cold mineral
Analyzed Jan 14, 2022·和歌山県環境衛生研究センター