白川温泉
Shirakawa OnsenOperated by · 華匠庵
Sampled at wellhead
黄
Sulfur
+ Chloride · Bicarbonate · Sulfate
Classification
Sodium Chloride-Bicarbonate-Sulfate spring
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.
pH
6.20
Neutral
Source temperature
74.8°C
Hot
Tonicity
1.35g/kg
Hypotonic
Flow rate
94.4L/min
Typical
Free CO₂
201mg/kg
Low
Radon
3.66Bq/kg
Low
- Color
- colorless and transparent
- Taste
- tasteless
- Odor
- hydrogen sulfide
Highlights
- Top-decile hot
- High silica
- Sulfur-rich
Analyzed Apr 5, 2016·株式会社 三計テクノス·Cert no. 温泉16-0101