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Selenium 78 Isotope

Linear Formula:



Selenium 78 Metal
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Selenium 78 Metal (Selenium-78) is a stable (non-radioactive) isotope of Selenium. It is both naturally occurring and produced by fission. Selenium 78 Metal is one of over 250 stable metallic isotopes produced by American Elements for biological and biomedical labeling, as target materials and other applications. Selenium Metal 78 additionally has special application in bioavailability as an essential nutrient. Selenium Metal is also available in ultra high purity and as nanoparticles. For thin film applications it is available as rod, pellets, pieces, granules and sputtering targets and as either an ingot or powder. Selenium Metal 78 isotopic material is generally immediately available. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.



Chemical Identifiers

Linear Formula


Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

Related Elements

Selenium Bohr ModelSee more Selenium products. Selenium (atomic symbol: Se, atomic number: 34) is a Block P, Group 16, Period 4 element with an atomic radius of 78.96. The number of electrons in each of Selenium's shells is 2, 8, 18, 6 and its electron configuration is [Ar] 3d10 4s2 4p4. The selenium atom has a radius of 120 pm and a Van der Waals radius of 190 pm. Selenium is a non-metal with several allotropes: a black, vitreous form with an irregular crystal structure three red-colored forms with monoclinic crystal structures and a gray form with a hexagonal crystal structure, the most stable and dense form of the element. Elemental SeleniumOne of the mose common uses for selenium is in glass production the red tint that it lends to glass neutralizes green or yellow tints from impurities in the glass materials. Selenium was discovered and first isolated by Jöns Jakob Berzelius and Johann Gottlieb Gahn in 1817. The origin of the name Selenium comes from the Greek word "Selênê," meaning moon.

Recent Research

Mercury and selenium in free-ranging brown trout (Salmo trutta) in the River Skienselva watercourse, Southern Norway., Økelsrud, Asle, Lydersen Espen, Moreno Clara, and Fjeld Eirik , Sci Total Environ, 2017 May 15, Volume 586, p.188-196, (2017)

Removal mechanism of selenite by Fe3O4-precipitated mesoporous magnetic carbon microspheres., Lu, Jianwei, Fu Fenglian, Ding Zecong, Li Na, and Tang Bing , J Hazard Mater, 2017 May 15, Volume 330, p.93-104, (2017)

Microbial selenium sulfide reduction for selenium recovery from wastewater., Hageman, S P. W., van der Weijden R D., Stams A J. M., van Cappellen P, and Buisman C J. N. , J Hazard Mater, 2017 May 05, Volume 329, p.110-119, (2017)

Selenium nanoparticles synthesized in aqueous extract of Allium sativum perturbs the structural integrity of Calf thymus DNA through intercalation and groove binding., Ezhuthupurakkal, Preedia Babu, Polaki Lokeswara Rao, Suyavaran Arumugam, Subastri Ariraman, Sujatha Venugopal, and Thirunavukkarasu Chinnasamy , Mater Sci Eng C Mater Biol Appl, 2017 May 01, Volume 74, p.597-608, (2017)

Effects of selenium-lead interaction on the gene expression of inflammatory factors and selenoproteins in chicken neutrophils., Li, Xiaojing, Xing Mengyuan, Chen Menghao, Zhao Jinxin, Fan Ruifeng, Zhao Xia, Cao Changyu, Yang Jie, Zhang Ziwei, and Xu Shiwen , Ecotoxicol Environ Saf, 2017 May, Volume 139, p.447-453, (2017)

Ultrasensitive electrochemical biosensing platform based on spherical silicon dioxide/molybdenum selenide nanohybrids and triggered Hybridization Chain Reaction., Shuai, Hong-Lei, Wu Xu, Huang Ke-Jing, and Zhai Zi-Bo , Biosens Bioelectron, 2017 Mar 30, Volume 94, p.616-625, (2017)

A Solution Processable High-Performance Thermoelectric Copper Selenide Thin Film., Lin, Zhaoyang, Hollar Courtney, Kang Joon Sang, Yin Anxiang, Wang Yiliu, Shiu Hui-Ying, Huang Yu, Hu Yongjie, Zhang Yanliang, and Duan Xiangfeng , Adv Mater, 2017 Mar 29, (2017)

Methylseleninic acid and sodium selenite induce severe ER stress and subsequent apoptosis through UPR activation in PEL cells., Shigemi, Zenpei, Manabe Kazuki, Hara Naoko, Baba Yusuke, Hosokawa Kohei, Kagawa Hiroki, Watanabe Tadashi, and Fujimuro Masahiro , Chem Biol Interact, 2017 Mar 25, Volume 266, p.28-37, (2017)

Facile Route to Rare Heterobimetallic Aluminum-Copper and Aluminum-Zinc Selenide Clusters., Li, Bin, Li Jiancheng, Liu Rui, Zhu Hongping, and Roesky Herbert W. , Inorg Chem, 2017 Mar 20, Volume 56, Issue 6, p.3136-3139, (2017)

Selenium delays tomato fruit ripening by inhibiting ethylene biosynthesis and enhancing the antioxidant defense system., Zhu, Zhu, Chen Yanli, Shi Guoqing, and Zhang Xueji , Food Chem, 2017 Mar 15, Volume 219, p.179-184, (2017)


April 24, 2017
Los Angeles, CA
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