If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf
S6672
Sodium thiosulfate pentahydrate
BioXtra, ≥99.5%
Synonym(s):
Disodium thiosulfate pentahydrate, Na2S2O3 · 5H2O
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
500 g | Available to ship TODAYfromMILWAUKEE | $142.00 |
1 kg | Available to ship TODAYfromMILWAUKEE | $251.00 |
About This Item
product line
BioXtra
Quality Segment
assay
≥99.5%
impurities
≤0.0005% Phosphorus (P), ≤0.005% Insoluble matter
solubility
H2O: 1 M, clear, colorless
anion traces
sulfate (SO42-): ≤0.2%
cation traces
Al: ≤0.0005%, Ca: ≤0.0005%, Cu: ≤0.0005%, Fe: ≤0.0005%, K: ≤0.005%, Mg: ≤0.0005%, NH4+: ≤0.05%, Pb: ≤0.001%, Zn: ≤0.0005%
SMILES string
O.O.O.O.O.[Na+].[Na+].[O-]S([O-])(=O)=S
InChI
1S/2Na.H2O3S2.5H2O/c;;1-5(2,3)4;;;;;/h;;(H2,1,2,3,4);5*1H2/q2*+1;;;;;;/p-2
InChI key
PODWXQQNRWNDGD-UHFFFAOYSA-L
Application
- Preparation and characterization of sodium thiosulfate pentahydrate/expanded graphite phase change energy storage composites.: The research addresses issues such as high supercooling and phase separation in sodium thiosulfate pentahydrate by adding expanded graphite, significantly improving its thermal properties for energy storage applications (Lu et al., 2020).
- Surface free energy analysis for stable supercooling of sodium thiosulfate pentahydrate with microcosmic-visualized methods.: This paper presents a detailed analysis of supercooling stability in sodium thiosulfate pentahydrate, employing microcosmic-visualized methods to enhance its application in thermal energy storage systems (Peng et al., 2020).
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This Item | |||
|---|---|---|---|
| description BioXtra, ≥99.5% | description puriss., meets analytical specification of Ph. Eur., BP, USP | description ACS reagent, ≥99.5% | description ReagentPlus®, ≥99.5% |
| solubility H2O: 1 M, clear, colorless | solubility - | solubility water: soluble(lit.) | solubility - |
| assay ≥99.5% | assay 99.0-101.0% (EP), 99.0-100.5% (USP, dry basis) | assay ≥99.5% | assay ≥99.5% |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 200 |
| cation traces Mg: ≤0.0005%, Al: ≤0.0005%, Cu: ≤0.0005%, Ca: ≤0.0005%, K: ≤0.005%, Pb: ≤0.001%, Fe: ≤0.0005%, Zn: ≤0.0005%, NH4+: ≤0.05% | cation traces As: ≤3 mg/kg, Fe: ≤10 mg/kg, Ca: ≤50 mg/kg | cation traces N: ≤0.002% | cation traces - |
| anion traces sulfate (SO42-): ≤0.2% | anion traces sulfate, sulfite (as SO42-): ≤2000 mg/kg, sulfide (S2-): in accordance | anion traces SO42- and SO32-: ≤0.1%, S2-: passes test | anion traces - |
| product line BioXtra | product line - | product line - | product line ReagentPlus® |
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Storage Class
13 - Non Combustible Solids
WGK
WGK 1
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
PPE (personal protective equipment)
Eyeshields, Gloves, type N95 (US)
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How is shipping temperature determined? And how is it related to the product storage temperature?
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Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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