Potassium bisulfate - Reagent grade , CAS No.7646-93-7

CAS: 7646-93-7 Cat. No.: P433728 Molecular Weight: 136.17 EC Number: 231-594-1

GRADE & PURITY Reagent Grade

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

Overview

Potassium bisulfate is an inorganic potassium salt. On heating it from 300 to 700°C, it transforms to molten form and the reactions occurring in this transition have been investigated by Raman spectra. Its electrical conductance values have been evaluated (T = 0-700C, Pressure = upto 4000bars). Potassium bisulfate is a water soluble inorganic salt mainly used as a preservative, as a flux and also in the manufacture of fertilizers.

Application

Potassium bisulfate may be used: As a catalyst for the preparation of butyl paraben from p -hydroxybenzoic acid and n -butyl alcohol. As a promoter for the synthesis of 3,4-dihydropyrimidin-2(1 H )-one derivatives via Biginelli reaction in ethylene glycol. As an acid catalyst for the synthesis of ethyl tert -butyl ether (ETBE) from ethanol and tert -butyl alcohol via reactive distillation. As a dehydrating agent for the synthesis of pyruvic acid from tartaric acid. Potassium bisulfate (Potassium hydrogen sulfate) may be employed as a catalyst in the synthesis of butyl paraben and methyl cinnamate. It may also be used for the gravimetric estimation of beryllium in beryl.

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

Reagent grade

Storage

Room temperature

Shipped In

FedEx DG Service

This product requires cold chain shipping. Ground and other economy services are not available.

Grade

Reagent Grade

Names and Identifiers

• 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=

Taxonomic Classification

Taxonomy Tree

• Kingdom Inorganic compounds
  • Superclass Mixed metal/non-metal compounds
    • Class Alkali metal oxoanionic compounds
      • Subclass Alkali metal sulfates

• Kingdom: Inorganic compounds
• Superclass: Mixed metal/non-metal compounds
• Class: Alkali metal oxoanionic compounds
• Subclass: Alkali metal sulfates
• Intermediate Tree Nodes: Not available
• Direct Parent: Alkali metal sulfates
• Alternative Parents: Inorganic salts Inorganic oxides
• Molecular Framework: Not available
• Substituents: Alkali metal sulfate - Inorganic oxide - Inorganic salt
• Description: This 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

Data sources

1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61.

DOI: 10.1186/s13321-016-0174-y

Chemical and Physical Properties

• Melt Point(°C): 214 °C
• Molecular Weight: 136.170 g/mol
• Hydrogen Bond Donor Count: 1
• Hydrogen Bond Acceptor Count: 4
• Rotatable Bond Count: 0
• Exact Mass: 135.923 Da
• Monoisotopic Mass: 135.923 Da
• Topological Polar Surface Area: 85.800 Ų
• Heavy Atom Count: 6
• Formal Charge: 0
• Complexity: 93.200
• Isotope Atom Count: 0
• Defined Atom Stereocenter Count: 0
• Undefined Atom Stereocenter Count: 0
• Defined Bond Stereocenter Count: 0
• Undefined Bond Stereocenter Count: 0
• The total count of all stereochemical bonds: 0
• Covalently-Bonded Unit Count: 2

XLogP3

References

1. Wenwen Bie, Shuzhao Zhang, Lin Zhang, Hengye Li, Xiaoyu Sun, Tianpei Cai, Zhongxia Wang, Fenying Kong, Wei Wang.  (2023)  Thioether-functionalized porous β-cyclodextrin polymer for efficient removal of heavy metal ions and organic micropollutants from water.  CARBOHYDRATE POLYMERS,      [PMID:37985051] [10.1016/j.carbpol.2023.121509]

2. Runjuan Zhou, Kuo Zhang, Ming Zhang.  (2023)  Efficiency of Orange Yellow II Degradation by Synergistic Hydroxylamine with Fe2+ to Activate Peroxymonosulfate Oxidation: Machine Learning Prediction and Performance Optimization.  Water,  15  (10): (1931).  [PMID:] [10.3390/w15101931]

3. Caijuan Zhong, Shengxiao Zhang, Shuangshuang Yang, Baiqing Yuan, Qiang Xu, Zengrun Xie, Chenyu Du.  (2023)  Mo and N co-doped iron biochar materials activating peroxymonosulfate for enhanced degradation of bisphenol A: Mechanism discussion and practical application.  CHEMICAL ENGINEERING JOURNAL,      [PMID:] [10.1016/j.cej.2023.143298]

4. Shilin Zhang, Qingjie Wang, Peng Zhang, Jie Wang, Yue Li, Chang Lu, Muhammad Tariq Sarwar, Xiongbo Dong, Qihang Zhao, Aidong Tang, Liangjie Fu, Huaming Yang.  (2023)  Nanoclay-Modulated Interfacial Chemical Bond and Internal Electric Field at the Co3O4/TiO2 p-n Junction for Efficient Charge Separation.  Small,  19  (30): (2300770).  [PMID:37035990] [10.1002/smll.202300770]

5. Huawei Fang, Jianyang Gao, Jing Wang, Jixiang Xu, Lei Wang.  (2023)  Oxygen-doped and pyridine-grafted g-C3N4 for visible-light driven peroxymonosulfate activation: Insights of enhanced tetracycline degradation mechanism.  SEPARATION AND PURIFICATION TECHNOLOGY,      [PMID:] [10.1016/j.seppur.2023.123565]

6. Yuxuan Lin, Weihua Qin, Yuwei Lu, Mingye Ren, Pan Gao, Feng Xiao, Shaoxia Yang.  (2023)  Reconstructing atomic Fe coordination in the PMS activation process to realize efficient BPA degradation at low temperature.  Environmental Science-Nano,  10  (5): (1284-1296).  [PMID:] [10.1039/D2EN01156E]

7. Yuancai Lv, Shiyu He, Shuting Liu, Zhendong Yu, Yanting Jiang, Yihui Hu, Yifan Liu, Chunxiang Lin, Xiaoxia Ye, Guifang Yang, Minghua Liu.  (2023)  Rapid degradation of PFOA by the activated peroxymono-sulfate with FeCo/MoS2 catalyst.  Journal of Environmental Chemical Engineering,      [PMID:] [10.1016/j.jece.2023.109467]

8. Yiyin Yang, Kangzhou Xie, Donglin Tang.  (2023)  Non-Isocyanate Polyurethanes by Alcoholysis of Alkyl Bisurea with Li Salt-Assisted Melting: Synthesis and Properties.  MACROMOLECULAR CHEMISTRY AND PHYSICS,  224  (8): (2200448).  [PMID:] [10.1002/macp.202200448]

9. Sheng Guo, Meng Chen, Liming You, Yu Wei, Chao Cai, Qingsong Wei, Huali Zhang, Kun Zhou.  (2022)  3D printed hierarchically porous zero-valent copper for efficient pollutant degradation through peroxymonosulfate activation.  SEPARATION AND PURIFICATION TECHNOLOGY,      [PMID:] [10.1016/j.seppur.2022.122437]

10. Sufei Feng, Mingfu Li, Hui Chen, Liyuan Huai, Douyong Min, Jian Zhang.  (2022)  Synergistic catalytic effect of zirconium chloride and Brønsted acid salt for conversion of agarose to 5-hydroxymethylfurfural in aqueous media.  RENEWABLE ENERGY,      [PMID:] [10.1016/j.renene.2022.08.035]

11. Zelin Li, Lu Bai, Zhiqiang Xing, Wenxiao Yang, Qiuhua Wu, Guolin Zhang.  (2022)  Stearic acid-TiO2 composite Janus sheets perpendicular to the interface for emulsification and photocatalysis.  INORGANIC CHEMISTRY COMMUNICATIONS,      [PMID:] [10.1016/j.inoche.2022.109835]

12. Mengdi Tang, Yonggang Zhang.  (2021)  Enhancing the activation of persulfate using nitrogen-doped carbon materials in the electric field for the effective removal of p-nitrophenol.  RSC Advances,  11  (60): (38003-38015).  [PMID:35498075] [10.1039/D1RA06691A]

13. Chang Bai, Yong Liu, Cong Wang, Xiao-Cong Zhang, Jia-Xuan Wu, Hai-Tao Ren, Xu Han.  (2021)  Conversion of aniline contaminant to valuable polyaniline polymers from wastewater under alkaline conditions.  Molecular Catalysis,      [PMID:] [10.1016/j.mcat.2021.111430]

14. Zhihao Si, Miao Zuo, Wenlong Jia, Gaofeng Chen, Xing Tang, Xianhai Zeng, Lu Lin.  (2020)  Effective Synthesis of a Biodiesel Precursor from Furan Derivatives at Room Temperature with NaHSO4 as a Recyclable Catalyst.  ENERGY & FUELS,      [PMID:] [10.1021/acs.energyfuels.0c03018]

15. Qingkong Chen, Fangying Ji, Qian Guo, Jianping Fan, Xuan Xu.  (2014)  Combination of heterogeneous Fenton-like reaction and photocatalysis using Co–TiO2 nanocatalyst for activation of KHSO5 with visible light irradiation at ambient conditions.  Journal of Environmental Sciences,      [PMID:25499492] [10.1016/j.jes.2014.03.003]

16. Xinfeng zhu, Tuo Wang, Jiawei Sun, Jiaxuan Li, Jingyu Wang, Junning Wang, Rongfu Peng, Zhengjie Li, Jingquan Liu, Libin Jiang, Kai Wang, Dandan Pang, Xueping Liu, Chaohai Wang, Jinhui Zhang.  (2024)  Activation of peroxymonosulfate by ZIF-67-derived Co3O4 for the degradation of tetracycline: Effect of roasting temperature.  INORGANICA CHIMICA ACTA,      [PMID:] [10.1016/j.ica.2024.122070]

17. Xingyou Wang, Xiaoqing Sun, Jiahui Lei, Linsen Li, Nanhang Zhu, Yue Yu, Yating Zeng, Ke Kang, QiangYing Yi, Yao Wu.  (2024)  Bioinspired zwitterionic lysine glycopolymers: Enhancing wound repair through microenvironment modulation for bacterial elimination and optimal immunoregulation.  Nano Today,      [PMID:] [10.1016/j.nantod.2024.102354]

18. Jinhui Zhang, Linlin Chang, Xinfeng Zhu, Jia Yao, Aoxuan Bai, Junning Wang, Rongfu Peng, Guofeng Li, Libin Jiang, Kai Wang, Xueping Liu, Shiqiang Yin, Chaohai Wang.  (2024)  Large-scale and green synthesis of flower-like MgO from waste magnesite activated PMS for oxidation of doxycycline.  APPLIED SURFACE SCIENCE,      [PMID:] [10.1016/j.apsusc.2024.161993]

19. Manzi Hu, Jingnan Lu, Hebao Mei, Honglie Ding, Kezhou Cai, Hui Zhou, Baocai Xu.  (2024)  Role of calcium salts in modulating benzo[a]pyrene levels in barbecued pork sausages: A study on quality attributes and safety.  FOOD CHEMISTRY,      [PMID:39332372] [10.1016/j.foodchem.2024.141381]

20. Xinfeng Zhu, Jiaxuan Li, Yunlong Wang, Tuo Wang, Mengyao Shi, Linlin Chang, Chaohai Wang, Kai Wang, Libin Jiang, Dandan Pang, Zhongxian Song, Shiqiang Yin, Jinhui Zhang.  (2024)  Tetracycline degradation by the Co3O4/peroxymonosulfate system: Effect of calcination temperature.  Chemical Physics Impact,      [PMID:] [10.1016/j.chphi.2024.100505]

21. Hongzhi Chen, Ke Tian, Taiping Qing, Xiaoqing Liu, Jiangling Mao, Jingxi Qin, Shunfeng Jiang.  (2023)  Efficient removal of tetrabromobisphenol A through persulfate activation by α-MnO2 nanofiber coated with graphene oxide.  APPLIED SURFACE SCIENCE,      [PMID:] [10.1016/j.apsusc.2023.158445]

22. Yu Yan, Sun Yanan, Ge Beixiao, Yan Jiawen, Zhang Kaili, Chen Hui, Hu Jinxing, Tang Juntao, Song Shuang, Zeng Tao.  (2022)  Synergistic removal of organic pollutants from water by CTF/BiVO4 heterojunction photocatalysts.  ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,  30  (10): (27570-27582).  [PMID:36385341] [10.1007/s11356-022-24184-1]

23. Chaoqun Tan, Yanxiang Huang, Xiaochuan Lin, Peng Li, Lianghu Su, Qiongfang Wang.  (2024)  Insights into ibuprofen degradation in boron-doped CuO/PMS systems: Role of Cu, kinetics, mechanisms and degradation pathways.  Journal of Water Process Engineering,      [PMID:] [10.1016/j.jwpe.2024.106711]

24. Xudong Hu, Xiaolian Zhao, Shuang Li, Mengmeng Zhou, Jun Long, Xinhai Wang, Usman Farooq.  (2025)  A Computation-guided design of surface-enhanced radical promotion in photo-Fenton abatement of contaminants under near-infrared-light (1000 nm).  CARBON,      [PMID:] [10.1016/j.carbon.2025.120925]

25. Jun Zeng, Tao Jia, Tong Chen, Huilin Liu, Zhaojie Sun, Xiaoyong Huang, Yunfei Shang, Shuwei Hao, Chunhui Yang.  (2025)  Excitation-modulated upconversion nanoprobes for switchable imaging and phototherapy.  Applied Materials Today,      [PMID:] [10.1016/j.apmt.2025.102979]

26. Zhen Wu, Lisheng Wang, Xiaohan Wang, Bin Zhao, Heliang Fan, Xueyu Tao, Ming Zheng, Yasser Vasseghian, Akbar Hojjati-Najafabadi, Litong Guo.  (2025)  Design of FeCoNiSmNd-co-doped porous carbon catalysts from pulverized coal for radical and non-radical peroxymonosulfate activation in organic pollutant degradation.  JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY,      [PMID:] [10.1016/j.jiec.2025.10.058]

27. Xudong Hu, Jingyi Shang, Xiaolian Zhao, Jun Long, Izaz ul Islam, Shuang Li, Usman Farooq, Xinhai Wang.  (2025)  Synergistic radical/nonradical pathways in Fe3O4@CoFe-LDH nanocomposite for peroxymonosulfate-activated tetracycline degradation: mechanism and interface engineering.  CHEMICAL ENGINEERING SCIENCE,      [PMID:] [10.1016/j.ces.2025.122892]

28. Dan Li, Yuxin Qin, Jingxing Li, Subhan Mahmood, Jianqin Shi, Yu Cao, Shun Yao.  (2025)  Strengthened Effect of Surface-Active Ionic Liquids on Curcumin Solubility and Extraction Performance of Curcuminoids.  Separations,  12  (2): (29).  [PMID:] [10.3390/separations12020029]

29. Weijian Sun, Kaicheng Yang, Yifan Zhao, Liping Sun, Qingchi Xu, Jian Weng, Jun Xu.  (2026)  Precise modulation of MOF pore structures via functional group dimensions and spatial configuration for membrane separation.  Science Advances,  12  (8):   [PMID:41719401] [10.1126/sciadv.adz7972]

30. Yong Chen, Huiping Zeng, Jiaxin Xu, Sibo Fu, Yuliang Zhu, Fanxu Zeng, Luyao Teng, Jiahao Wu, Fanhao Meng, Dong Li, Jie Zhang.  (2026)  Revealing the activation mechanism of periodate by groundwater treatment plant waste iron-containing sludge for sulfadiazine removal: the key activation role of transition metal Mn.  ENVIRONMENTAL RESEARCH,      [PMID:] [10.1016/j.envres.2026.124351]

31. Yixuan Jiang, Botao Gao, Yan Dong, Wenzheng An, Juntai Lv, Zehao Kang, Yongbin Zhang, Dongzhi Zhang.  (2026)  A smart wearable microfluidic colorimetric sweat sensing system for concurrent, wireless monitoring of sweat biomarkers and sweat rate.  CHEMICAL ENGINEERING JOURNAL,      [PMID:] [10.1016/j.cej.2026.174786]