Mercuric iodide - ACS , CAS No.7774-29-0

CAS: 7774-29-0 Cat. No.: M299375 Molecular Weight: 454.40 EC Number: 231-873-8
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GRADE & PURITY ACS ? ACS grade — meets American Chemical Society specifications, the analytical benchmark in the US. Use for analytical and QC work needing ACS-defined purity.
Synonyms
MERCURIC IODIDE|Mercury diiodide|Mercury(II) iodide|diiodomercury|7774-29-0|HgI2|Red mercuric iodide|Hydrargyrum diodatum|Mercuric iodide, red|alpha-Mercury(II) iodide|Hydrargyrum bijodatum|MERCURY (II) IODIDE|HSDB 1211|EINECS 231-873-8|UNII-R03O05RB0P|me
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Why this grade

ACS ACS for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

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Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

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Literature proof

Cited in 17 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
MERCURIC IODIDE | Mercury diiodide | Mercury(II) iodide | diiodomercury | 7774-29-0 | HgI2 | Red mercuric iodide | Hydrargyrum diodatum | Mercuric iodide, red | alpha-Mercury(II) iodide | Hydrargyrum bijodatum | MERCURY (II) IODIDE | HSDB 1211 | EINECS 231-873-8 | UNII-R03O05RB0P | me
Specifications & Purity
ACS
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Protected from light, Room temperature
Shipped In
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This product requires cold chain shipping. Ground and other economy services are not available.
Grade
ACS
Names and Identifiers
Canonical SmilesI[Hg]I
IUPAC Namediiodomercury
InChIKeyYFDLHELOZYVNJE-UHFFFAOYSA-L
INCHI1S/Hg.2HI/h;2*1H/q+2;;/p-2
Isomeric SMILES I[Hg]I
WGK Germany 3
RTECS OW5250000
UN Number 1638
Packing Group II
Molecular Weight 454.40
Reaxy-Rn 4937290
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=4937290&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

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✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

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📊 Datasheet

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🔬 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
ClassTransition metal salts
SubclassTransition metal iodides
Intermediate Tree Nodes Not available
Direct ParentTransition metal iodides
Alternative Parents Inorganic salts  Inorganic mercury compounds  
Molecular FrameworkNot available
Substituents Transition metal iodide - Inorganic salt - Inorganic mercury compound
DescriptionThis 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 mercury coordination entity
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.

11 results found

Lot NumberCertificate TypeDateItem
C2626127Certificate of AnalysisApr 06, 2026 M299375
E2409021Certificate of AnalysisFeb 04, 2026 M299375
C2419212Certificate of AnalysisDec 10, 2025 M299375
H2310022Certificate of AnalysisMay 13, 2025 M299375
C2302968Certificate of AnalysisDec 09, 2024 M299375
K2112025Certificate of AnalysisAug 04, 2023 M299375
K2112026Certificate of AnalysisAug 04, 2023 M299375
I2305243Certificate of AnalysisAug 04, 2023 M299375
K2112598Certificate of AnalysisAug 04, 2023 M299375
C2302967Certificate of AnalysisNov 29, 2022 M299375
C2302969Certificate of AnalysisNov 29, 2022 M299375

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Chemical and Physical Properties
SolubilityInsoluble in water. Slightly soluble in alcohol, ether, acetone, chloroform, ethyl acetate, olive oil and castor oil.
SensitivityLight sensitive.
Boil Point(°C)350℃
Melt Point(°C)259℃
Molecular Weight454.400 g/mol
XLogP3
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count0
Rotatable Bond Count0
Exact Mass455.78 Da
Monoisotopic Mass455.78 Da
Topological Polar Surface Area0.000 Ų
Heavy Atom Count3
Formal Charge0
Complexity2.800
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 Count1
Citations of This Product
References
1. Hesong Wang, Zhangjie Yu, Mengzhe Liao, Chuandong Wu, Jiaxuan Yang, Jing Zhao, Jinlong Wang, Langming Bai, Guibai Li, Heng Liang.  (2023)  Replacing traditional pretreatment in one-step UF with natural short-distance riverbank filtration: Continuous contaminants removal and TMP increase relief.  WATER RESEARCH,      [PMID:38064787] [10.1016/j.watres.2023.120948]
2. Lichao Nengzi, Lin Meng, Yong Qiu, Xiaoju Li, Keniu Didi, Haitao Li, Guanglei Qiu.  (2023)  Influence of Nitrite on the Removal of Organic Matter and Manganese Using Pilot-Scale Biofilter: A Kinetic Study.  Water,  15  (12): (2145).  [PMID:] [10.3390/w15122145]
3. Yan Jin, Xinyuan Wang, Ya-Ping Dong.  (2022)  Variation of Water Quality in Ningxia Section of the Yellow River in Recent 5 Years.  Journal of Chemistry,      [PMID:] [10.1155/2022/7704513]
4. Fengjiao Quan, Guangming Zhan, Bing Zhou, Cancan Ling, Xiaobing Wang, Wenjuan Shen, Jianfen Li, Falong Jia, Lizhi Zhang.  (2022)  Electrochemical removal of ammonium nitrogen in high efficiency and N2 selectivity using non-noble single-atomic iron catalyst.  Journal of Environmental Sciences,      [PMID:36375937] [10.1016/j.jes.2022.03.004]
5. Zhenggang Huang, Chuanming Zhang, Chunyang Shen, Lili Jin, Yaxiong Zeng, Baohong Guan.  (2024)  Adsorption - Catalytic ozonation of ammonia nitrogen in drinking water by alkali-modified NaX zeolites.  Journal of Water Process Engineering,      [PMID:] [10.1016/j.jwpe.2024.105243]
6. Xiaoyuan Zhang, Qing Qin, Xuetong Zhai, Hongliang Guo, Song Han, Jo-Shu Chang, Duu-Jong Lee.  (2025)  Black-odor water body remediations by ecological floating island coupled with Ecobase and Acinetobacter haemolyticus: Lab and pilot tests.  Journal of the Taiwan Institute of Chemical Engineers,      [PMID:] [10.1016/j.jtice.2025.106081]
7. Xu Pengfei, Ma Haiming, Shen Wenjuan, Quan Fengjiao, Li Jianfen, He Yun.  (2024)  Efficient Ammonia Electrosynthesis from Nitrate on Non-Noble Fe/CeO2 Catalyst.  CATALYSIS LETTERS,      [PMID:] [10.1007/s10562-024-04709-8]
8. Fengjiao Quan, Guangming Zhan, Pengfei Xu, Xiaolan Chen, Wenjuan Shen, Falong Jia, Yun He, Jianfen Li.  (2024)  Electrochemical removal of nitrate in high-salt wastewater with low-cost iron electrode modified by phosphate.  Journal of Environmental Sciences,      [PMID:39095173] [10.1016/j.jes.2024.01.007]
9. Bingqin Su, Wei Zhang, Feiyun Sun, Xiaohui Quan.  (2024)  Hybrid peroxymonosulfate/activated carbon fiber-sequencing batch reactor system for efficient treatment of coking wastewater: Establishment and influential factors.  BIORESOURCE TECHNOLOGY,      [PMID:38810707] [10.1016/j.biortech.2024.130907]
10. Jiaopeng Lai, Ruotao Zeng, Xinru Bian, Wen Leng, Cao Yang, Lihui Yang, Wei Li, Guangzhao Wang, Ganfeng He, Sihao Lv.  (2025)  Ultralow Ru nanoparticle-loaded Ti4O7 anodes for efficient chlorine evolution and sustainable farm odor spray wastewater treatment.  APPLIED SURFACE SCIENCE,      [PMID:] [10.1016/j.apsusc.2025.162891]
11. Yingying Kong, Hongshan Wang, Wang Zhao, Qi Sun, Junjie Li, Shilie Pan.  (2024)  β-CsHg2I5, a compound with rare [Hg2I5] dimers and large optical anisotropy.  DALTON TRANSACTIONS,  53  (29): (12090-12097).  [PMID:38967448] [10.1039/D4DT01536C]
12. Fengjiao Quan, Pengfei Xu, Xiufan Liu, Wenjuan Shen, Yuhao Li, Jianfen Li, Yun He, Fangyuan Chen.  (2025)  Synergistic integration of nickel oxide and low-valent copper for enhanced electrocatalytic nitrate reduction to ammonia.  JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY,      [PMID:] [10.1016/j.jiec.2025.07.049]
13. Pengfei Xu, Sisi Han, Fengjiao Quan, Xiufan Liu, Wenjuan Shen, Yuhao Li, Jianfen Li, Yun He, Kebing Song.  (2025)  Oxalic acid enhanced nano zero-valent iron for Electrocatalytic nitrate reduction to Ammonia.  JOURNAL OF ELECTROANALYTICAL CHEMISTRY,      [PMID:] [10.1016/j.jelechem.2025.119185]
14. Aonan Qiao, Yu Liu, Fei Li, Haixia Pan, Yanan Guo, Yang Liu, Xianliang Yi, Hao Zhou.  (2025)  Nitrogen-source dependent regulation of manganese oxidation in Pseudomonas sp. AN-1: Mechanistic insights from multi-omics analyses.  CHEMICAL ENGINEERING JOURNAL,      [PMID:] [10.1016/j.cej.2025.169410]
15. Dong Kai, Han Shuhe, Li Yanan, Wang Zhongliao, Xue Chuang, Sun Xiaogang, Yao Yongchao, Li Haobo, Wang Xin, Ma Dongwei, Liu Li-Min, Zhang Bin.  (2025)  Testing, quantification, in situ characterization and calculation simulation for electrocatalytic nitrate reduction.  Nature Protocols,      [PMID:41331391] [10.1038/s41596-025-01289-8]
16. Yinxia Du, Wangfei Che, Yunfei Shi, Juanjuan Lu, Xiaodong Zhou, Ting Liu, Shilie Pan, Junjie Li.  (2025)  [HgX2] Linear Group Enabled Ultraviolet Birefringent Crystal RbHg5Br11 with Strong Optical Anisotropy and Wide Bandgap.  Advanced Science,  12  (45): (e14304).  [PMID:40923400] [10.1002/advs.202514304]
17. Dongmei lv, Yu Fu, Zihui Xu, Chi Guan, Di Shen, Zhelin Mao, Xinyi Long, Xiaolei Wang, Zhiyu Ren, Zhimin Chen, Shichao Du.  (2026)  Orchestrating deoxygenation and hydrogenation via oxygen-bridged heterometallic coordination for scalable ammonia synthesis.  APPLIED CATALYSIS B-ENVIRONMENTAL,      [PMID:] [10.1016/j.apcatb.2026.126985]
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