Nessler’s reagent - CP, ≥98% , CAS No.7783-33-7

CAS: 7783-33-7 Cat. No.: D109693 Molecular Weight: 786.40 EC Number: 231-990-4

GRADE & PURITY CP, ≥98%

Synonyms

Potassium mercuric iodide | Nessler's reagent | potassium tetraiodidomercurate(2-) | Nessler reagent | reactivo de Nessler | Nesslers Reagenz | Potassium mercury iodine | potassium tetraiodidomercurate | MERCURIC POTASSIUM IODIDE | Potassium tetraiodomerc

Storage

Protected from light,Room temperature,Argon charged

Shipped In

FedEx DG Service

Overview

Nessler’s reagent is widely used in determination of ammonium compounds. It can be prepared using anhydrous mercuric iodide and anhydrous potassium iodide. It can be prepared from potassium tetraiodomercurate dissolved in potassium hydroxide.
Reagent for the determination of ammonia

Specifications

Synonyms

Potassium mercuric iodide | Nessler's reagent | potassium tetraiodidomercurate(2-) | Nessler reagent | reactivo de Nessler | Nesslers Reagenz | Potassium mercury iodine | potassium tetraiodidomercurate | MERCURIC POTASSIUM IODIDE | Potassium tetraiodomerc

Specifications & Purity

CP, ≥98%

Storage

Protected from light, Room temperature, Argon charged

Shipped In

FedEx DG Service

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

Grade

CP

Purity

≥98%

Names and Identifiers

• Canonical Smiles: [K+].[K+].I[Hg-2](I)(I)I
• IUPAC Name: dipotassium;tetraiodomercury(2-)
• InChIKey: OPCMAZHMYZRPID-UHFFFAOYSA-J
• INCHI: 1S/Hg.4HI.2K/h;4*1H;;/q+2;;;;;2*+1/p-4
• Isomeric SMILES: [K+].[K+].I[Hg-2](I)(I)I
• UN Number: 1643
• Packing Group: II
• Molecular Weight: 786.40

Taxonomic Classification

Taxonomy Tree

• Kingdom Inorganic compounds
  • Superclass Mixed metal/non-metal compounds
    • Class Transition metal salts
      • Subclass Transition metal iodides

• Kingdom: Inorganic compounds
• Superclass: Mixed metal/non-metal compounds
• Class: Transition metal salts
• Subclass: Transition metal iodides
• Intermediate Tree Nodes: Not available
• Direct Parent: Transition metal iodides
• Alternative Parents: Inorganic salts Inorganic mercury compounds
• Molecular Framework: Not available
• Substituents: Transition metal iodide - Inorganic salt - Inorganic mercury compound
• Description: This compound belongs to the class of inorganic compounds known as transition metal iodides. These are inorganic compounds in which the largest halogen atom is Iodine, and the heaviest metal atom is a transition metal.
• External Descriptors: periodometallate salt

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

• Solubility: Soluble in water.
• Sensitivity: Moisture & Light sensitive.
• Melt Point(°C): 120-127°C
• Molecular Weight: 786.410 g/mol
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 1
• Rotatable Bond Count: 0
• Exact Mass: 787.516 Da
• Monoisotopic Mass: 787.516 Da
• Topological Polar Surface Area: 0.000 Ų
• Heavy Atom Count: 7
• Formal Charge: 0
• Complexity: 19.100
• 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: 3

XLogP3

References

1. Huibing Chi, Qingwei Jiang, Yiqian Feng, Guizheng Zhang, Yilian Wang, Ping Zhu, Zhaoxin Lu, Fengxia Lu.  (2023)  Thermal Stability Enhancement of L-Asparaginase from Corynebacterium glutamicum Based on a Semi-Rational Design and Its Effect on Acrylamide Mitigation Capacity in Biscuits.  Foods,  12  (23): (4364).  [PMID:38231880] [10.3390/foods12234364]

2. Jialin Lin, Baihua Luo, Peng Wan, Jian Wang, Andrew S. Hursthouse, Si Li, Guocheng Zhu.  (2023)  A metallic phenolic network-enhanced bentonite for ammonical nitrogen removal from black-odorous water.  PROCESS SAFETY AND ENVIRONMENTAL PROTECTION,      [PMID:] [10.1016/j.psep.2023.11.064]

3. Zhenhua Hou, Libo Wang, Gang Liu, Ya Wang, Yuhan Wang, Yangyang Zhang, Xiayu Wu, Nan Li.  (2023)  Construct electron transport path through NH2-MIL-125 modified Fe-doped W18O49 nanowires to enhance photocatalytic nitrogen fixation performance.  JOURNAL OF ALLOYS AND COMPOUNDS,      [PMID:] [10.1016/j.jallcom.2023.172940]

4. Xiong-Feng Ma, Rui Xiao, Yingcong Wei, Shaohui Zhang, Xiaoyi Hu, Ling Zhang, Nanfang Qin, Lele Wang, Zhengxin Ding, Huaxiang Lin, Zizhong Zhang, Jinlin Long, Rusheng Yuan.  (2023)  Photothermal catalytic conversion of water and inert nitriles to amide activated by in-situ formed transition-metal-complex nanodots.  APPLIED CATALYSIS B-ENVIRONMENTAL,      [PMID:] [10.1016/j.apcatb.2023.123636]

5. Zuan Yu, Jiangwei Xie, Tianlun Ren, Hongjie Yu, Kai Deng, Ziqiang Wang, Hongjing Wang, Liang Wang, You Xu.  (2023)  Electrochemical Postmodification-Induced Surface Atom Rearrangement over Cu Nanodendrites for Enhanced Electrosynthesis of Ammonia from Nitrate.  INORGANIC CHEMISTRY,      [PMID:37724563] [10.1021/acs.inorgchem.3c02886]

6. Junlang Li, Jilan Dong, Zhenguo Chen, Xiaoyong Li, Xiaohui Yi, Guoqiang Niu, Jiaan He, Simin Lu, Yuxiang Ke, Mingzhi Huang.  (2023)  Free nitrous acid prediction in ANAMMOX process using hybrid deep neural network model.  JOURNAL OF ENVIRONMENTAL MANAGEMENT,      [PMID:37423194] [10.1016/j.jenvman.2023.118566]

7. Huaiwei Zhang, Yifan Chen, Ying Pan, Liang Bao, Jing-yuan Ge.  (2023)  Multicomponent hydroxides supported Cu/Cu2O nanoparticles for high efficient photocatalytic ammonia synthesis.  JOURNAL OF COLLOID AND INTERFACE SCIENCE,      [PMID:37023518] [10.1016/j.jcis.2023.03.187]

8. Cheng Nan, Huimin Yang, Fanfan Gao, Nan Gao, Wenjing Zhou, Haiyan Du, Zhenhai Liang.  (2023)  Effects of Molybdenum Doping on the Enhanced Electrocatalytic Nitrogen Reduction Reaction Performance of CeO2 Nanorods: Theoretical and Experimental Investigations.  ChemPlusChem,  88  (3): (e202300023).  [PMID:36861491] [10.1002/cplu.202300023]

9. Chi Huibing, Zhu Xiaoyu, Shen Juan, Lu Zhaoxin, Lu Fengxia, Lyu Yunbin, Zhu Ping.  (2023)  Thermostability enhancement and insight of L-asparaginase from Mycobacterium sp. via consensus-guided engineering.  APPLIED MICROBIOLOGY AND BIOTECHNOLOGY,  107  (7): (2321-2333).  [PMID:36843197] [10.1007/s00253-023-12443-1]

10. Yajie Bai, Shuyu Gao, Wanru Xie, Zhenyuan Fang, Hongye Bai, Weiqiang Fan.  (2023)  Photoelectrochemical nitrate reduction to ammonia over BiVO4/2D macromolecular with extremely low energy consumption.  INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,      [PMID:] [10.1016/j.ijhydene.2022.11.329]

11. Huaiwei Zhang, Yifan Chen, Liang Bao, Jing-yuan Ge.  (2022)  CeO2-CDs clusters decorated Co(OH)2 nanosheets for improved photocatalytic ammonia synthesis.  JOURNAL OF COLLOID AND INTERFACE SCIENCE,      [PMID:36549212] [10.1016/j.jcis.2022.12.065]

12. Huibing Chi, Yilian Wang, Bingjie Xia, Yawen Zhou, Zhaoxin Lu, Fengxia Lu, Ping Zhu.  (2022)  Enhanced Thermostability and Molecular Insights for l-Asparaginase from Bacillus licheniformis via Structure- and Computation-Based Rational Design.  JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY,      [PMID:36341695] [10.1021/acs.jafc.2c05712]

13. Huibing Chi, Bingjie Xia, Juan Shen, Xiaoyu Zhu, Zhaoxin Lu, Fengxia Lu, Ping Zhu.  (2022)  Characterization of a novel and glutaminase-free type II L-asparaginase from Corynebacterium glutamicum and its acrylamide alleviation efficiency in potato chips.  INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES,      [PMID:36130640] [10.1016/j.ijbiomac.2022.09.162]

14. You Xu, Youwei Sheng, Mingzhen Wang, Tianlun Ren, Keke Shi, Ziqiang Wang, Xiaonian Li, Liang Wang, Hongjing Wang.  (2022)  Interface coupling induced built-in electric fields boost electrochemical nitrate reduction to ammonia over CuO@MnO2 core–shell hierarchical nanoarrays.  Journal of Materials Chemistry A,  10  (32): (16883-16890).  [PMID:] [10.1039/D2TA02006H]

15. Hao Luo, Jiaxin Yan, Yiwei Shan, Jianwen Zhou, Jun Yu, Bruno Boury, Hui Wu, He Xiao, Liulian Huang, Zhanhui Yuan, Lihui Chen.  (2022)  Metal-free photocatalyst for nitrogen fixation under visible light based on COF/g-C3N4/ CNT nanocomposite.  Journal of Environmental Chemical Engineering,      [PMID:] [10.1016/j.jece.2022.107713]

16. You Xu, Kaili Ren, Tianlun Ren, Mingzhen Wang, Ziqiang Wang, Xiaonian Li, Liang Wang, Hongjing Wang.  (2022)  Ultralow-content Pd in-situ incorporation mediated hierarchical defects in corner-etched Cu2O octahedra for enhanced electrocatalytic nitrate reduction to ammonia.  APPLIED CATALYSIS B-ENVIRONMENTAL,      [PMID:] [10.1016/j.apcatb.2022.121094]

17. Li-Fang Chen, Ai-Yun Xie, Yao-Yin Lou, Na Tian, Zhi-You Zhou, Shi-Gang Sun.  (2022)  Electrochemical synthesis of Tetrahexahedral Cu nanocrystals with high-index facets for efficient nitrate electroreduction.  JOURNAL OF ELECTROANALYTICAL CHEMISTRY,      [PMID:] [10.1016/j.jelechem.2022.116022]

18. Jie Sun, Weiqi Gao, Honghan Fei, Guohua Zhao.  (2021)  Efficient and selective electrochemical reduction of nitrate to N2 by relay catalytic effects of Fe-Ni bimetallic sites on MOF-derived structure.  APPLIED CATALYSIS B-ENVIRONMENTAL,      [PMID:] [10.1016/j.apcatb.2021.120829]

19. Hongjing Wang, Qiqi Mao, Tianlun Ren, Tongqing Zhou, Kai Deng, Ziqiang Wang, Xiaonian Li, You Xu, Liang Wang.  (2021)  Synergism of Interfaces and Defects: Cu/Oxygen Vacancy-Rich Cu-Mn3O4 Heterostructured Ultrathin Nanosheet Arrays for Selective Nitrate Electroreduction to Ammonia.  ACS Applied Materials & Interfaces,      [PMID:34499470] [10.1021/acsami.1c11249]

20. Yu Haili, Zhang Guihua, Cai Yanhua, Dong Faqin.  (2021)  Altering the substituents of salicylic acid to improve Berthelot reaction for ultrasensitive colorimetric detection of ammonium and atmospheric ammonia.  ANALYTICAL AND BIOANALYTICAL CHEMISTRY,  413  (23): (5695-5702).  [PMID:34331553] [10.1007/s00216-021-03485-3]

21. You Xu, Mingzhen Wang, Kaili Ren, Tianlun Ren, Mengying Liu, Ziqiang Wang, Xiaonian Li, Liang Wang, Hongjing Wang.  (2021)  Atomic defects in pothole-rich two-dimensional copper nanoplates triggering enhanced electrocatalytic selective nitrate-to-ammonia transformation.  Journal of Materials Chemistry A,  9  (30): (16411-16417).  [PMID:] [10.1039/D1TA04743D]

22. Yijin Fan, Yanyun Zhao, Xiangming Hu, Weimin Cheng, Xiaoling Tang, Shucang Zhu, Chunyu Song.  (2021)  Material optimization of microbial dust suppressant nutrient solution based on response surface curve.  POWDER TECHNOLOGY,      [PMID:] [10.1016/j.powtec.2021.02.061]

23. Zhang Long, Ge Jianhua, Zhuang Tao, Ding Xiulong, Zheng Xuyang.  (2021)  Enhanced photocatalytic nitrogen fixation performance of g-C3N4 under the burning explosion effect.  Reaction Kinetics Mechanisms and Catalysis,  132  (2): (1211-1224).  [PMID:] [10.1007/s11144-021-01947-4]

24. Zhang Long, Ge Jianhua, Liu Yujie, Zheng Xuyang, Du Pingwu.  (2021)  Ozone modification as an efficient strategy for photocatalytic nitrogen fixation under visible light irradiation.  JOURNAL OF POROUS MATERIALS,  28  (3): (825-834).  [PMID:] [10.1007/s10934-021-01038-8]

25. Jiaxin Li, Dandan Wang, Renquan Guan, Yujun Zhang, Zhao Zhao, Hongju Zhai, Zaicheng Sun.  (2020)  Vacancy-Enabled Mesoporous TiO2 Modulated by Nickel Doping with Enhanced Photocatalytic Nitrogen Fixation Performance.  ACS Sustainable Chemistry & Engineering,      [PMID:] [10.1021/acssuschemeng.0c06775]

26. Huijuan Han, Yang Yang, Jiafang Liu, Xiuzhen Zheng, Xulin Wang, Sugang Meng, Sujuan Zhang, Xianliang Fu, Shifu Chen.  (2020)  Effect of Zn Vacancies in Zn3In2S6 Nanosheets on Boosting Photocatalytic N2 Fixation.  ACS Applied Energy Materials,      [PMID:] [10.1021/acsaem.0c02202]

27. Zhengfeng Shen, Feifei Li, Jiangrui Lu, Zhidan Wang, Rui Li, Xiaochao Zhang, Changming Zhang, Yawen Wang, Yunfang Wang, Zhiping Lv, Jianxin Liu, Caimei Fan.  (2020)  Enhanced N2 photofixation activity of flower-like BiOCl by in situ Fe(III) doped as an activation center.  JOURNAL OF COLLOID AND INTERFACE SCIENCE,      [PMID:33069017] [10.1016/j.jcis.2020.09.111]

28. Lingling Qiao, Guoyi Duan, Sheng Zhang, Yuan Ren, Yanzhi Sun, Yang Tang, Pingyu Wan, Ran Pang, Yongmei Chen, Armistead G. Russell, Maohong Fan.  (2019)  Electrochemical ammonia synthesis catalyzed with a CoFe layered double hydroxide – A new initiative in clean fuel synthesis.  Journal of Cleaner Production,      [PMID:] [10.1016/j.jclepro.2019.119525]

29. Zeyu Wang, Cong Chen, Huan Liu, Dzmitry Hrynshpan, Tatsiana Savitskaya, Jianmeng Chen, Jun Chen.  (2019)  Enhanced denitrification performance of Alcaligenes sp. TB by Pd stimulating to produce membrane adaptation mechanism coupled with nanoscale zero-valent iron.  SCIENCE OF THE TOTAL ENVIRONMENT,      [PMID:31810663] [10.1016/j.scitotenv.2019.135063]

30. Yongwen Ren, Chang Yu, Xinyi Tan, Xiaotong Han, Hongling Huang, Huawei Huang, Jieshan Qiu.  (2019)  Is It Appropriate to Use the Nafion Membrane in Electrocatalytic N2 Reduction?.  Small Methods,  3  (12): (1900474).  [PMID:] [10.1002/smtd.201900474]

31. Yan Zhou, Xinping Yu, Xueyuan Wang, Chen Chen, Shutao Wang, Jun Zhang.  (2019)  MoS2 nanosheets supported gold nanoparticles for electrochemical nitrogen fixation at various pH value.  ELECTROCHIMICA ACTA,      [PMID:] [10.1016/j.electacta.2019.05.111]

32. Jingjing Wang, Zhiwei Liu, Liying Wang, Lu Li, Qian Liu, Zhiwei Liu, Zhenzhu Cao, Yongfeng Zhang, Lin Cheng, Jucai Yang.  (2024)  “Flowers protector”: Sacrificing “flowers” to guard more NH4+ by a novel Bi2MoO6@BiMOF photocatalyst.  Molecular Catalysis,      [PMID:] [10.1016/j.mcat.2024.113989]

33. Yanda Qian, Peng Wan, Andrew S. Hursthouse, Guocheng Zhu.  (2025)  A novel zero-valent iron/titanium tannate composite for deep removal of nitrogen from water.  CHEMICAL ENGINEERING JOURNAL,      [PMID:] [10.1016/j.cej.2025.160937]

34. Yunchao Ma, Yuxin Yao, Shengnan Qi, Chuanxue You, Yuanyuan Wu, Chunbo Liu, Bo Hu, Keyu Cui.  (2024)  Boosting photocatalytic nitrogen fixation performance by adjusting the intramolecular D-A structure and band gap of thiophene-based COFs.  SEPARATION AND PURIFICATION TECHNOLOGY,      [PMID:] [10.1016/j.seppur.2024.129972]

35. Jiang Qianyang, He Jiahuan, Wang Yinwen, Chen Bangyao, Tian Kewei, Yang Keda, Wei Huangzhao, Xu Xiaoling.  (2024)  Efficient removal of ammonia–nitrogen in wastewater by zeolite molecular sieves prepared from coal fly ash.  Scientific Reports,  14  (1): (1-13).  [PMID:39256504] [10.1038/s41598-024-72067-x]

36. Yihao Zhang, Yingnan Sun, Haiming Li, Meihong Niu, Xing Wang, Zhiwei Wang, Yanzhu Guo.  (2024)  Facile construction of amphoteric lignin-based hydrogel to simultaneously capture ammonium and phosphate ions and reutilization as bio-based slow-release fertilizer.  COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,      [PMID:] [10.1016/j.colsurfa.2024.135800]

37. Huaiwei Zhang, Liang Bao, Qingwei Zhou, Ge Song.  (2024)  Facilitate nitrogen fixation photoreaction over decorated composited dots on the (001) facet exposed anatase titanium dioxide nanosheets.  Journal of Environmental Chemical Engineering,      [PMID:] [10.1016/j.jece.2024.114034]

38. Junyi Chen, Yuchi Luo, Junda Zhang, Zexuan Lu, Yitong Han, Xiangxin Chen, Mingkui Li, Hanyun Fan, Xipeng Wei.  (2024)  In Situ Remediation of Combined Ammonia and Nitrate Nitrogen Contamination Using Zero-Valent Iron-Enhanced Microorganisms in Acidic Groundwater: A Laboratory and Pilot-Scale Study.  Processes,  12  (12): (2768).  [PMID:] [10.3390/pr12122768]

39. Yongguang Bu, Wenjing Yu, Qiang Yang, Wenkai Zhang, Qingyu Sun, Wensu Wu, Peixin Cui, Chao Wang, Guandao Gao.  (2024)  Membraneless Electrochemical Synthesis Strategy toward Nitrate-to-Ammonia Conversion.  ENVIRONMENTAL SCIENCE & TECHNOLOGY,      [PMID:38953681] [10.1021/acs.est.4c02445]

40. Huaiwei Zhang, Liang Bao, Qingwei Zhou, Ying Pan, Jingyuan Ge, Jia Du.  (2024)  Modulating band structure through introducing Cu0/CuxO composites for the improved visible light driven ammonia synthesis.  JOURNAL OF COLLOID AND INTERFACE SCIENCE,      [PMID:38301465] [10.1016/j.jcis.2024.01.203]

41. Tong Li, Shuangwei Wang, Jinqiang Gao, Ruiqiang Wang, Guifeng Gao, Guangming Ren, Shengnan Na, Mei Hong, Shihe Yang.  (2024)  Spherical Binderless 4A/5A Zeolite Assemblies: Synthesis, Characterization, and Adsorbent Applications.  MOLECULES,  29  (7): (1432).  [PMID:38611712] [10.3390/molecules29071432]

42. Zhaochuang Ma, Siyuan Zhai, Peizhe Sun.  (2025)  Enhancement mechanism of iron autotrophic denitrification system based on resource utilization of waste membranes.  WATER RESEARCH,      [PMID:40834736] [10.1016/j.watres.2025.124410]

43. Wei Xu, Xiaoping Zhang, Guichang Zhang, Xin Zhang.  (2025)  Removal of TP, COD, and NH4+-N in Simulated Slaughtering Wastewater by Two Kinds of Immobilized Microalgal Spheres.  Water,  17  (2): (179).  [PMID:] [10.3390/w17020179]

44. Zhengxiang Gu, Yijing Chen, Zengxi Wei, Linping Qian, Abdullah M. Al-Enizi, Jianmin Ma, Gang Zhou, Gengfeng Zheng.  (2020)  Precise tuning of heteroatom positions in polycyclic aromatic hydrocarbons for electrocatalytic nitrogen fixation.  JOURNAL OF COLLOID AND INTERFACE SCIENCE,      [PMID:32711210] [10.1016/j.jcis.2020.07.046]

45. JinSong Ri, Yimin Xie, Mingliang Wang, Chunlin Guo, Dengao Chang, CholJin Sin, SongChol Ri.  (2025)  Adsorption of ammonia nitrogen from the synthetic wastewater on chemically modified carbon felt.  JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY,      [PMID:] [10.1080/01932691.2025.2493089]

46. Hanlong Liu, Siyao Zhang, Touqeer Premy, Chunpeng Zhang, Fangyuan Liu.  (2025)  Pulsed electrocatalysis on iron-decorated copper foam enables efficient and selective ammonia synthesis from low-concentration nitrate.  Journal of Environmental Chemical Engineering,      [PMID:] [10.1016/j.jece.2025.118539]