Sodium thiosulfate - PrimorTrace™, ≥99.99% metals basis , CAS No.7772-98-7

CAS: 7772-98-7 Cat. No.: S100825 Formula: Na2S2O3 Molecular Weight: 158.11 EC Number: 231-867-5
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GRADE & PURITY PrimorTrace™ ? PrimorTrace™ — Aladdin's trace-metal-analysis line with ultra-low metal background. Use for ICP/AAS trace-metal work where contamination must be minimal. ≥99.99% metals basis
Synonyms
EINECS 231-867-5 | HSDB 592 | L0IYT1O31N | Chlorine Control | Hypo | Disodium thiosulfate | UNII-L0IYT1O31N | Sodothiol | Sodium thiosulfate, anhydrous | SODIUM THIOSULFATE | Thiosulfuric acid, disodium salt | NSC 45624 | sodiumthiosulfate | disodium sulf
Storage
Room temperature
Shipped In
Normal
★
Size
Germany (EU)
USA*
Price
Qty
25g
S100825-25g
—
3 In stock
€88.42
100g
S100825-100g
—
2 In stock
€288.00
500g
S100825-500g
1 In stock
1 In stock

€1,016.90

€1,186.98
Save €170.08 (14.33%)
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Why this grade

PrimorTrace™, ≥99.99% metals basis PrimorTrace™ 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 480 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
EINECS 231-867-5 | HSDB 592 | L0IYT1O31N | Chlorine Control | Hypo | Disodium thiosulfate | UNII-L0IYT1O31N | Sodothiol | Sodium thiosulfate, anhydrous | SODIUM THIOSULFATE | Thiosulfuric acid, disodium salt | NSC 45624 | sodiumthiosulfate | disodium sulf
Specifications & Purity
PrimorTrace™, ≥99.99% metals basis
Storage
Room temperature
Shipped In
Normal
Grade
PrimorTrace™
Purity
≥99.99% metals basis
Names and Identifiers
Pubchem Sid508813619
Canonical Smiles[O-]S(=O)(=S)[O-].[Na+].[Na+]
IUPAC Namedisodium;dioxido-oxo-sulfanylidene-λ6-sulfane
InChIKeyAKHNMLFCWUSKQB-UHFFFAOYSA-L
INCHI1S/2Na.H2O3S2/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2*+1;/p-2
Isomeric SMILES [O-]S(=O)(=S)[O-].[Na+].[Na+]
Molecular Weight 158.11

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.

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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 sodium salts  Inorganic oxides  
Molecular FrameworkNot available
Substituents Alkali metal thiosulfate - Inorganic sodium salt - 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





Associated Targets(non-human)
Pseudomonas aeruginosa (123386 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Staphylococcus aureus (210822 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Mechanisms of Action
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.

17 results found

Lot NumberCertificate TypeDateItem
A2304596Certificate of AnalysisSep 22, 2026 S100825
B2524177Certificate of AnalysisMar 01, 2025 S100825
B2524209Certificate of AnalysisMar 01, 2025 S100825
B2524210Certificate of AnalysisMar 01, 2025 S100825
F2601022Certificate of AnalysisMar 01, 2025 S100825
I2410166Certificate of AnalysisAug 22, 2024 S100825
I2410165Certificate of AnalysisAug 22, 2024 S100825
I2410164Certificate of AnalysisAug 22, 2024 S100825
I2410163Certificate of AnalysisAug 22, 2024 S100825
A2304617Certificate of AnalysisNov 24, 2022 S100825
K2317045Certificate of AnalysisNov 24, 2022 S100825
A2304629Certificate of AnalysisNov 24, 2022 S100825
G2230135Certificate of AnalysisJul 07, 2022 S100825
G2230133Certificate of AnalysisJul 07, 2022 S100825
G2230132Certificate of AnalysisJul 07, 2022 S100825
J2228144Certificate of AnalysisJul 07, 2022 S100825
J2228145Certificate of AnalysisJul 07, 2022 S100825
Chemical and Physical Properties
x_boil_point_char100°C
x_melt_point_char48°C
Molecular Weight158.110 g/mol
XLogP3
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count4
Rotatable Bond Count0
Exact Mass157.908 Da
Monoisotopic Mass157.908 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
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Analysis of Classical Histological Special Staining Systems: Application Selection of PTAH, Masson, VG, Elastic Fiber Staining, and Reticular Fiber Staining
Citations of This Product
Solution Calculators
Reviews

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