Potassium bisulfate - AR, ≥99% , CAS No.7646-93-7

CAS: 7646-93-7 Cat. No.: P100003 Formula: KHSO4 Molecular Weight: 136.17 EC Number: 231-594-1
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. ≥99%
Synonyms
Potassium hydrogensulphate | potassium hydrogen-sulphate | Potassium bisulfate | Sal enixum | UNII-1J1K03241F | Acid potassium sulfate | 1J1K03241F | INS NO.515(II) | UREA, N-(3-(4-BROMO-1-METHYL-1H-PYRAZOL-5-YL)-4-METHOXYPHENYL)-N'-(2,4-DIFLUOROPHENYL)-
Storage
Room temperature
Shipped In
FedEx DG Service
★
Size
Germany (EU)
USA*
Price
Qty
500g
P100003-500g
—
1 In stock
€24.21
20×500g
P100003-20×500g
Made to order · 8–12 wks
€399.94
Enter a quantity for the sizes you want to add.
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Why this grade

AR, ≥99% AR for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Room temperature Ships FedEx DG Service 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 31 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
Potassium hydrogensulphate | potassium hydrogen-sulphate | Potassium bisulfate | Sal enixum | UNII-1J1K03241F | Acid potassium sulfate | 1J1K03241F | INS NO.515(II) | UREA, N-(3-(4-BROMO-1-METHYL-1H-PYRAZOL-5-YL)-4-METHOXYPHENYL)-N'-(2,4-DIFLUOROPHENYL)-
Specifications & Purity
AR, ≥99%
Storage
Room temperature
Shipped In
FedEx DG Service
Grade
AR
Purity
≥99%
Names and Identifiers
Pubchem Sid
Pubchem Sid Url
https://pubchem.ncbi.nlm.nih.gov/substance/504758983
Canonical Smiles
OS(=O)(=O)[O-].[K+]
IUPAC Name
potassium;hydrogen sulfate
InChIKey
CHKVPAROMQMJNQ-UHFFFAOYSA-M
INCHI
1S/K.H2O4S/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+1;/p-1
Isomeric SMILES
OS(=O)(=O)[O-].[K+]
WGK Germany
1
RTECS
TS7200000
UN Number
2509
Packing Group
II
Molecular Weight
136.17
Reaxy-Rn
11343361
Reaxys-RN_link_address
https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=11343361&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 sulfates
Intermediate Tree Nodes Not available
Direct ParentAlkali metal sulfates
Alternative Parents Inorganic salts  Inorganic oxides  
Molecular FrameworkNot available
Substituents Alkali metal sulfate - Inorganic oxide - Inorganic salt
DescriptionThis compound belongs to the class of inorganic compounds known as alkali metal sulfates. These are inorganic compounds in which the largest oxoanion is sulfate, 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.

8 results found

Lot NumberCertificate TypeDateItem
H2631644Certificate of AnalysisSep 07, 2026 P100003
A2627639Certificate of AnalysisJan 29, 2026 P100003
I2508574Certificate of AnalysisSep 10, 2025 P100003
C2525616Certificate of AnalysisApr 02, 2025 P100003
K2414523Certificate of AnalysisNov 22, 2024 P100003
D2301874Certificate of AnalysisApr 08, 2023 P100003
K2224157Certificate of AnalysisNov 26, 2022 P100003
J2219704Certificate of AnalysisOct 25, 2022 P100003
Chemical and Physical Properties
SensitivityMoisture sensitive.
x_melt_point_char214 °C
Molecular Weight136.170 g/mol
XLogP3
Hydrogen Bond Donor Count1
Hydrogen Bond Acceptor Count4
Rotatable Bond Count0
Exact Mass135.923 Da
Monoisotopic Mass135.923 Da
Topological Polar Surface Area85.800 Ų
Heavy Atom Count6
Formal Charge0
Complexity93.200
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 Count2
FAQs and Articles
Citations of This Product
Solution Calculators
Reviews

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