黒川温泉 耕きちの湯
Kurokawa Onsen Kokichi-no-yu黄
Sulfur
- Color
- colorless and transparent
- Taste
- tasteless
- Odor
- hydrogen sulfide
Sodium Bicarbonate-Sulfate spring
pH 6.0Weakly acidicHot source · 63°CHigh silicaSulfur-rich
Composition fingerprint0.5 g/kg dissolved · Hypotonic
Na⁺73
HCO₃⁻50
SO₄²⁻30
Cl⁻19
◀ 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
- Skin conditionsatopic skin, eczema
- Circulationtired legs
- Aches & jointsstiff shoulders
- Sensitive-skin cautionbroken or dry skin
A simple sulfur spring carrying the unmistakable rotten-egg note of H₂S, weakly acidic and hypotonic. It is unusually rich in metasilicic acid at 173 mg/kg, which leaves a thin silica film that makes skin feel noticeably smoother afterwards. A moderate 264 mg/kg of free CO₂ adds a faint freshness to the feel of the water.
Sampled at wellhead·Analyzed Aug 23, 2024·株式会社 再春館安心安全研究所·Cert no. 第K2400040-001
