Potassium pyrosulfate - AR, ≥98% , CAS No.7790-62-7

CAS: 7790-62-7 Cat. No.: P112206 Molecular Weight: 254.32 EC Number: 232-216-8
AVAILABLE TO ORDER
GRADE & PURITY AR ? Analytical Reagent grade — high-purity chemicals meeting strict assay limits for lab analysis. Use when accuracy matters and trace impurities could skew results. ≥98%
Synonyms
Potassium disulfate | Disulfuric acid | sulfonato sulfate | dipotassium
Storage
Room temperature,Desiccated,Cool
Shipped In
Normal
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
100g
P112206-100g
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.
$9.90
500g
P112206-500g
5
$33.90
12×500g
P112206-12×500g
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.

$285.90

$366.90
Save $81.00 (22.08%)
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Why this grade

AR, ≥98% AR for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Room temperature,Desiccated,Cool 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 5 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
Potassium disulfate | Disulfuric acid | sulfonato sulfate | dipotassium
Specifications & Purity
AR, ≥98%
Storage
Room temperature, Desiccated, Cool
Shipped In
Normal
Grade
AR
Purity
≥98%
Names and Identifiers
Pubchem Sid504753872
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/504753872
Canonical Smiles[O-]S(=O)(=O)OS(=O)(=O)[O-].[K+].[K+]
IUPAC Namedipotassium;sulfonato sulfate
InChIKeyKAQHZJVQFBJKCK-UHFFFAOYSA-L
INCHI1S/2K.H2O7S2/c;;1-8(2,3)7-9(4,5)6/h;;(H,1,2,3)(H,4,5,6)/q2*+1;/p-2
Isomeric SMILES [O-]S(=O)(=O)OS(=O)(=O)[O-].[K+].[K+]
WGK Germany 3
UN Number 3260
Molecular Weight 254.32
Reaxy-Rn 14768590
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=14768590&ln=

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 pyrosulfates
Intermediate Tree Nodes Not available
Direct ParentAlkali metal pyrosulfates
Alternative Parents Inorganic salts  Inorganic oxides  
Molecular FrameworkNot available
Substituents Alkali metal pyrosulfate - Inorganic oxide - Inorganic salt
DescriptionThis compound belongs to the class of inorganic compounds known as alkali metal pyrosulfates. These are inorganic compounds in which the largest oxoanion is pyrosulfate, 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.

15 results found

Lot NumberCertificate TypeDateItem
C2618435Certificate of AnalysisMar 21, 2026 P112206
K2511562Certificate of AnalysisNov 13, 2025 P112206
C2517544Certificate of AnalysisMar 26, 2025 P112206
C2517545Certificate of AnalysisMar 26, 2025 P112206
B2512449Certificate of AnalysisFeb 21, 2025 P112206
L2417548Certificate of AnalysisDec 24, 2024 P112206
A2521415Certificate of AnalysisDec 04, 2024 P112206
A2521416Certificate of AnalysisDec 04, 2024 P112206
E2513032Certificate of AnalysisDec 04, 2024 P112206
E2414197Certificate of AnalysisApr 16, 2024 P112206
G2424021Certificate of AnalysisApr 16, 2024 P112206
D2423320Certificate of AnalysisMar 15, 2024 P112206
A2305635Certificate of AnalysisJan 12, 2023 P112206
C2203337Certificate of AnalysisJul 03, 2021 P112206
F2123288Certificate of AnalysisJul 03, 2021 P112206

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Chemical and Physical Properties
SolubilitySoluble in water (25.4 g/l) at 20 °C.
SensitivityMoisture sensitive.
Melt Point(°C)325°C
Molecular Weight254.330 g/mol
XLogP3
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count7
Rotatable Bond Count0
Exact Mass253.836 Da
Monoisotopic Mass253.836 Da
Topological Polar Surface Area140.000 Ų
Heavy Atom Count11
Formal Charge0
Complexity194.000
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. Huang Jingdong, Sohn Il, Kang Youngjo, Yang Xiao.  (2022)  Separation of Zn and Fe in ZnFe2O4 by Reaction With MgCl2.  METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,  53  (4): (2634-2646).  [PMID:] [10.1007/s11663-022-02556-9]
2. Dan Wang, Le Zhang, Jing Zeng, Shenling Wang, Wangwang Li, Yuanlong Sun, Wenqin Wu, Zhi-Quan Tian, Zhaowei Zhang.  (2024)  A sensitive intelligent point-of-care test method for tert-butylhydroquinone in edible oil via a test strip with a smartphone.  FOOD CHEMISTRY,      [PMID:39089030] [10.1016/j.foodchem.2024.140625]
3. Guidong Li, Ye Chen, Mingkun Wu, Yuzhi Xu, Xiang Li, Mengkui Tian.  (2024)  High-efficiency leaching process for selective leaching of lithium from spent lithium iron phosphate.  WASTE MANAGEMENT,      [PMID:39317059] [10.1016/j.wasman.2024.09.017]
4. Haozheng Hu, Xianghao Meng, Yin Li, Yusong Yang, Yanqiu Xu, Junxian Hu, Yaochun Yao.  (2024)  Potassium Pyrosulfate-Assisted Roasting and Water Leaching for Selectively Li and Fe Recycling from Spent LiFePO4 Batteries.  ACS Sustainable Chemistry & Engineering,      [PMID:] [10.1021/acssuschemeng.4c04236]
5. Jingdong Huang, Xiao Yang.  (2024)  Unveiling the power of MgCl2 in extracting zinc from electric arc furnace dust.  RESOURCES CONSERVATION AND RECYCLING,      [PMID:] [10.1016/j.resconrec.2024.108085]
Solution Calculators
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