Names | |
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IUPAC name
5-Methyl-2-nitro-7-oxa-8-mercurabicyclo[4.2.0]octa-1(6),2,4-triene
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Other names
Metaphen; 6-Methyl-3-nitrobenzoxamercurete; 4-Nitro-5-hydroxymercuriorthocresol
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Identifiers | |
3D model (JSmol)
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ChemSpider | |
ECHA InfoCard | 100.004.648 |
PubChem CID
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UNII | |
CompTox Dashboard (EPA)
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Properties | |
C7H5HgNO3 | |
Molar mass | 351.713 g·mol−1 |
Hazards | |
Occupational safety and health (OHS/OSH): | |
Main hazards
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moderately toxic |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Nitromersol (metaphen) is a mercury-containing organic compound that is primarily used as an antiseptic and disinfectant. It is a brown-yellow solid that has no odor or taste, does not irritate the skin or mucous membranes, and has no impact on rubber or metallic instruments, including surgical and dental tools.[1]
This compound is a confirmed animal carcinogen. It can emit toxic fumes of NOx and mercury vapor when heated.[2] In 1998, use of nitromersol (and other mercury-containing products) as OTC first-aid antiseptics and products for diaper rash and vaginal contraceptives was disallowed by the FDA.[3] Nitromersol can cause hypersensitivity reactions.[4]
It is still in use as a preservative for vaccines and antitoxins.[examples needed]