Potassium thiosulfate - ≥95% , CAS No.10294-66-3

CAS: 10294-66-3 Cat. No.: P302100 Molecular Weight: 190.32 EC Number: 233-666-8 PubChem CID: 61501
AVAILABLE TO ORDER
GRADE & PURITY ≥95%
Synonyms
UK1TD58L5O | Potassium Hyposulfite | POTASSIUMTHIOSULFATE | 1264198-56-2 | J-000849 | UNII-UK1TD58L5O | Potassium thiosulphate | DIPOTASSIUM THIOSULFATE | Potassium thiosulfate | EINECS 233-666-8 | Thiosulfuric acid (H2S2O3), potassium salt (1:2) | DTXSID
Storage
Room temperature
Shipped In
Normal
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
25g
P302100-25g
7
$16.90
100g
P302100-100g
≥10
$46.90
500g
P302100-500g
1
$141.90
Enter a quantity for the sizes you want to add.
🧪

Why this grade

≥95% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Room temperature Ships Normal Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 2 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
UK1TD58L5O | Potassium Hyposulfite | POTASSIUMTHIOSULFATE | 1264198-56-2 | J-000849 | UNII-UK1TD58L5O | Potassium thiosulphate | DIPOTASSIUM THIOSULFATE | Potassium thiosulfate | EINECS 233-666-8 | Thiosulfuric acid (H2S2O3), potassium salt (1:2) | DTXSID
Specifications & Purity
≥95%
Storage
Room temperature
Shipped In
Normal
Purity
≥95%
Names and Identifiers
Pubchem Sid488183505
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/488183505
Canonical Smiles[O-]S(=O)(=S)[O-].[K+].[K+]
IUPAC Namedipotassium;dioxido-oxo-sulfanylidene-λ6-sulfane
InChIKeyFGRVOLIFQGXPCT-UHFFFAOYSA-L
INCHI1S/2K.H2O3S2/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2*+1;/p-2
Isomeric SMILES [O-]S(=O)(=S)[O-].[K+].[K+]
WGK Germany 3
PubChem CID 61501
Molecular Weight 190.32

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomInorganic compounds
SuperclassMixed metal/non-metal compounds
ClassAlkali metal oxoanionic compounds
SubclassAlkali metal thiosulfates
Intermediate Tree Nodes Not available
Direct ParentAlkali metal thiosulfates
Alternative Parents Inorganic sulfides  Inorganic salts  Inorganic oxides  
Molecular FrameworkNot available
Substituents Alkali metal thiosulfate - Inorganic oxide - Inorganic sulfide - Inorganic salt
DescriptionThis compound belongs to the class of inorganic compounds known as alkali metal thiosulfates. These are inorganic compounds in which the largest oxoanion is thiosulfate, and in which the heaviest atom not in an oxoanion is an alkali metal.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

14 results found

Lot NumberCertificate TypeDateItem
L2515061Certificate of AnalysisDec 19, 2025 P302100
A2329028Certificate of AnalysisOct 29, 2025 P302100
A2329029Certificate of AnalysisOct 29, 2025 P302100
J2520180Certificate of AnalysisOct 22, 2025 P302100
L2201780Certificate of AnalysisSep 09, 2025 P302100
L2201847Certificate of AnalysisSep 09, 2025 P302100
L2202364Certificate of AnalysisSep 09, 2025 P302100
C2518057Certificate of AnalysisApr 01, 2025 P302100
F2102358Certificate of AnalysisMar 12, 2024 P302100
F2102359Certificate of AnalysisMar 12, 2024 P302100
F2102361Certificate of AnalysisMar 12, 2024 P302100
K2405079Certificate of AnalysisAug 24, 2022 P302100
L2201815Certificate of AnalysisAug 24, 2022 P302100
L2201819Certificate of AnalysisAug 24, 2022 P302100

Show more ⌵

Chemical and Physical Properties
Molecular Weight190.330 g/mol
XLogP3
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count4
Rotatable Bond Count0
Exact Mass189.856 Da
Monoisotopic Mass189.856 Da
Topological Polar Surface Area104.000 Ų
Heavy Atom Count7
Formal Charge0
Complexity82.600
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count3
Citations of This Product
References
1. Zixuan Ding, Peilin Wang, Zhenrun Li, Yupeng Guo, Qiang Ma.  (2023)  Sulfur dots/Au@Ag nanorods array-based polarized ECL sensor for the detection of thyroid cancer biomarker.  TALANTA,      [PMID:37437396] [10.1016/j.talanta.2023.124925]
2. Wang Zhenglong, Shang Linbo, Chou I-Ming, Chen Chen, Zhou Yunhe, Li Jianguo, Jiang Ziqi, Gao Xinwei, Wan Ye.  (2025)  In situ Raman spectroscopic investigation of copper speciation in hydrothermal fluids at temperatures up to 300 °C.  Acta Geochimica,      [PMID:] [10.1007/s11631-025-00781-y]
Solution Calculators
Reviews

Customer Reviews

Shall we send you a message when we have discounts available?

Remind me later

Thank you! Please check your email inbox to confirm.

Oops! Notifications are disabled.