ethyl nitrite ethyl nitrite the chemical compound ethyl nitrite is an alkyl nitrite with a chemical formula c2h5no2. it may be prepared from ethanol. ethyl nitrite names preferred iupac name ethyl nitrite other names 1-nitrosooxyethaneethyl alcohol nitritenitrous acidnitrous etherethyl esternitrethyl identifiers cas number 109-95-5 y 3d model (jsmol) interactive image chembl chembl1551365 n chemspider 7735 y echa infocard 100.003.385 pubchem cid 8026 unii 8c7cj279rv y comptox dashboard (epa) dtxsid9046574 inchi inchi=1s/c2h5no2/c1-2-5-3-4/h2h2,1h3 ykey: qqzweecemnqstg-uhfffaoysa-n yinchi=1/c2h5no2/c1-2-5-3-4/h2h2,1h3key: qqzweecemnqstg-uhfffaoyau smiles o=nocc properties chemical formula c2h5no2 molar mass 75.067 g·mol−1 boiling point 17 °c (63 °f; 290 k) solubility in water 5.07 g/100 ml hazards occupational safety and health (ohs/osh): main hazards nfpa 704 (fire diamond) 2 4 4 except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). n verify (what is yn ?) infobox references uses it is used as a reagent with butanone to yield the dimethylglyoxime end product. ethyl nitrite is the main ingredient in a traditional ethanol-based south african remedy for colds and flu known as witdulsies, which is sold in pharmacies. it is known as a traditional afrikaans remedy; the same remedy is apparently made by the amish in the us. however, fda has blocked over-the-counter sales of this same remedy, known in the us as sweet nitrite or sweet spirit of nitre, since 1980. its use has been associated with fatal methemoglobinemia. methemoglobinemia is the primary toxic effect of ethyl nitrite. due to ethyl nitrite's high volatility and faint smell, in the presence of ethyl nitrite vapors, it is easy to breath a high dose of it without realizing, resulting in methemoglobinemia, which may or may not be severe, or even fatal.