'%3e%3cpath%20d='M12%2023.5C18.0751%2023.5%2023%2018.5751%2023%2012.5C23%206.42487%2018.0751%201.5%2012%201.5C5.92487%201.5%201%206.42487%201%2012.5C1%2018.5751%205.92487%2023.5%2012%2023.5Z'%20stroke='%23004976'%20stroke-width='2'%20stroke-linecap='round'%20stroke-linejoin='round'/%3e%3cpath%20d='M14.5%2018H13.6C13.1757%2018%2012.7686%2017.842%2012.4686%2017.5607C12.1685%2017.2794%2012%2016.8978%2012%2016.5V12.75C12%2012.5511%2011.9157%2012.3603%2011.7657%2012.2197C11.6157%2012.079%2011.4122%2012%2011.2%2012H10.5'%20stroke='%23004976'%20stroke-width='2'%20stroke-linecap='round'%20stroke-linejoin='round'/%3e%3ccircle%20cx='11.5'%20cy='7.5'%20r='1.5'%20fill='%23004976'/%3e%3c/g%3e%3cdefs%3e%3cclipPath%20id='clip0_4011_13713'%3e%3crect%20width='24'%20height='24'%20fill='white'%20transform='translate(0%200.5)'/%3e%3c/clipPath%3e%3c/defs%3e%3c/svg%3e)
Accessed: 
Structural identifiersNames and synonyms
Selenium trioxide
| Molecular formula: | O3Se |
| Average mass: | 126.968 |
| Monoisotopic mass: | 127.901265 |
| ChemSpider ID: | 103019 |
Wikipedia
Structural identifiers- Names
Names and synonymsVerified
13768-86-0
[RN]Dioxyde de oxosélane
[French]
[ACD/IUPAC Name]Oxoselandioxid
[German]
[ACD/IUPAC Name]Oxoselane dioxide
[ACD/IUPAC Name]Selane, oxo-, dioxide
[ACD/Index Name]Selenium trioxide
[Wiki]Unverified
237-385-1
[EINECS]Selenium oxide (SeO3)
selenonylideneoxidane
三氧化硒
[Chinese]