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Inorganic substances with the chemical composition of Na2S2O3*5H2O include sodium thiosulfate, pentahydrate and potassium thiosulfate pentahydrate. Sodium Thiosulfate Na2S2O2 has a colorless monoclinic Crystal, is odorless, and has cool and bitter tastes.
| Items | Appearance | Na2S2O3*5H2O | Insolubles in water | Na2S | FeHeavy Metals, also known as Pb | pH value of 200g/L solution | ||
| Standard | Wet crystallin | >=99.0 |
|
<=0.001% | <=0.001% | 6.5-9.5 | ||
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