川湯温泉(共同浴場)
Kawayu Onsen (Public Bath)Operated by · 川湯温泉共同浴場組合
曹
Bicarbonate
+ Chloride
- Color
- colorless and transparent
- Taste
- a faint mineral taste
- Odor
- hydrogen sulfide with a faint iron-rust note
Sodium Bicarbonate-Chloride spring
pH 7.0NeutralHot source · 73°CHigh silica
Composition fingerprint1.5 g/kg dissolved · Hypotonic
Na⁺87
HCO₃⁻68
Cl⁻29
◀ 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
- Aches & jointsstiff shoulders
- Warmingcold sensitivity
A hot (73 °C) sodium bicarbonate-chloride spring with a salt-tinged finish. Neutral at the wellhead (pH 7.0), it carries the unmistakable rotten-egg note of H₂S layered with a faint iron-rust edge and a touch of mineral taste. Bicarbonate softness meets chloride heat retention, and a generous 131 mg/kg of metasilicic acid leaves the kind of silica film that keeps skin feeling smooth.
Sampled at wellhead·Analyzed Nov 19, 2019·一般社団法人 和歌山県薬剤師会 医薬・公衆衛生検査センター·Cert no. 第E1911227号