| Identification | More | [Name]
POTASSIUM THIOSULFATE | [CAS]
10294-66-3 | [Synonyms]
POTASSIUM HYPOSULFITE
POTASSIUM THIOSULFATE
thiosulfuricacid(h2s2o3),dipotassiumsalt
Thiosulfuricacid,dipotassiumsalt
potassium thiosulphate
POTASSIUM THIOSULFATE, 75% SOLUTION IN W ATER
PotassiumThiosulfateK2S2O3
Potassium thiosulfate solution | [EINECS(EC#)]
233-666-8 | [Molecular Formula]
K2O3S2 | [MDL Number]
MFCD00036292 | [Molecular Weight]
190.32 | [MOL File]
10294-66-3.mol |
| Chemical Properties | Back Directory | [Appearance]
white crystalline powder | [density ]
1.484 g/mL at 25 °C | [solubility ]
insoluble in ethanol | [form ]
colorless hygroscopic crystals | [color ]
colorless hygroscopic crystals, crystalline | [Stability:]
Stable. Incompatible with strong acids, strong oxidizing agents. | [Water Solubility ]
g/100g H2O: 96.1 (0°C), 165.0 (25°C), 312.0 (90°C); solid phase, K2S2O3 · 2H2O (0°C), 3K2S2O3 ·5H2O (25°C), K2S2O3(90°C) [KRU93]; insoluble alcohol [MER06] | [Merck ]
13,7777 | [InChI]
InChI=1S/K.H2O3S2.H/c;1-5(2,3)4;/h;(H2,1,2,3,4); | [InChIKey]
CCCGVZRBXSJUOU-UHFFFAOYSA-N | [SMILES]
S(S)(O)(=O)=O.[KH] | [Uses]
Analytical reagent.
| [CAS DataBase Reference]
10294-66-3(CAS DataBase Reference) | [EPA Substance Registry System]
Thiosulfuric acid (H2S2O3), dipotassium salt (10294-66-3) |
| Hazard Information | Back Directory | [Chemical Properties]
white crystalline powder | [Description]
Potassium thiosulfate (KTS) is a liquid fertilizer that supplies potassium and sulfur. Potassium thiosulfate is a neutral to basic, chloride-free, clear, liquid solution that can be applied through fertigation alone or in liquid blends with urea solution, urea ammonium nitrate solutions, and 10-34-0. Very dilute potassium thiosulfate can be used as a foliar fertilizer on certain plants, but is known to cause phytotoxicity symptoms under certain conditions and should be used with caution. Potassium thiosulfate is pH sensitive and becomes unstable at pH below 5.5 and above 8.5. The elemental sulfur in thiosulfate will oxidize and generate sulfuric acid that can lower soil and media pH. Greenhouse and nursery managers should use caution when applying potassium thiosulfate to unbuffered soilless media. | [Purification Methods]
It is a good reducing agent used in analytical chemistry. [Foerster & Mommen Chem Ber 57 258 1924.] |
| Safety Data | Back Directory | [Hazard Codes ]
Xi | [Risk Statements ]
R36/38:Irritating to eyes and skin . | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing . | [WGK Germany ]
3 | [TSCA ]
TSCA listed | [REACH Registrations]
Active | [Storage Class]
11 - Combustible Solids |
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