金龍地獄
Kinryu Jigoku Spring塩
Chloride
- Color
- colorless and clear
- Taste
- slightly salty with a faint metallic note
- Odor
- faint hydrogen sulfide
Sodium Chloride spring
pH 3.0Weakly acidicHot source · 87°CHigh silica
Composition fingerprint4.4 g/kg dissolved · Hypotonic
Na⁺86
Cl⁻88
◀ CationsAnions ▶
- Sodium Na⁺
- salt's cation — pairs with chloride to make the water salty.
- Chloride Cl⁻
- table-salt anion — coats the skin and holds heat in.
Known good for
- Warmingcold sensitivity
- Aches & jointsstiff shoulders
- Smooth skindry, rough skin
A sodium chloride spring drawn from the Kinryu Jigoku source in Beppu's Kannawa district. At 86.5 °C it ranks among Japan's hottest natural sources, weakly acidic and salty with strong heat-retention. It is unusually rich in metasilicic acid at 566 mg/kg, leaving a thin silica film that makes skin feel noticeably smoother.
Sampled at wellhead·Analyzed Jul 21, 2020·公益社団法人 大分県薬剤師会検査センター·Cert no. 大薬検 第7R-20070012号