天神泉源
Tenjin Gensen塩
Chloride
- Color
- faintly green and turbid
- Taste
- strongly briny
- Odor
- nearly odorless
Sodium Chloride spring
pH 6.6NeutralHot source · 99°CStrong saltIron-richHigh silica
Composition fingerprint36.1 g/kg dissolved · Hypertonic
Na⁺76
Ca²⁺14
Cl⁻99
◀ 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
Tenjin Gensen — one of the wellheads that feeds Kin no Yu in Arima. A sodium-chloride hypersaline spring: at roughly 36 g/kg dissolved solids it exceeds ocean salinity and leaves a thick mineral coating on the skin. The wellhead emerges at 99.4 °C, putting it among Japan's hottest natural sources; its iron content oxidizes reddish-brown on air contact, which is what gives Arima's celebrated 'kinsen' (gold water) its colour. A respectable 121 mg/kg of metasilicic acid adds a layer of silica smoothness beneath the salt.
Sampled at mixing tank·Analyzed Sep 24, 2019·公益財団法人 中央温泉研究所·Cert no. 甲第3734号