白川温泉
Shirakawa OnsenOperated by · 華匠庵
黄
Sulfur
+ Chloride · Bicarbonate · Sulfate
- Color
- colorless and transparent
- Taste
- tasteless
- Odor
- hydrogen sulfide
Sodium Chloride-Bicarbonate-Sulfate spring
pH 6.2NeutralHot source · 75°CHigh silicaSulfur-rich
Composition fingerprint1.3 g/kg dissolved · Hypotonic
Na⁺74
Cl⁻48
HCO₃⁻27
SO₄²⁻24
◀ 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
- Skin conditionsatopic skin, eczema
- Circulationtired legs
- Aches & jointsstiff shoulders
- Sensitive-skin cautionbroken or dry skin
A hot (74.8 °C) sulfur-bearing sodium chloride/bicarbonate/sulfate spring — one of Japan's hotter natural sources. The water emerges clear at the wellhead with the unmistakable rotten-egg note of H₂S, neutral pH, and moderately mineralized at 1,349 mg/kg. Unusually high metasilicic acid (272.6 mg/kg) leaves the kind of silica film that makes skin feel noticeably smoother afterwards — a layered Kyushu-style soak.
Sampled at wellhead·Analyzed Apr 5, 2016·株式会社 三計テクノス·Cert no. 温泉16-0101