Ethyl xanthic acid

{{Short description|Chemical compound}}

{{Chembox

| IUPACName = Ethoxymethanedithioic acid{{Cite web | url = https://pubchem.ncbi.nlm.nih.gov/compound/Ethylxanthate | title = Ethylxanthate | work = PubChem }}

| OtherNames = {{ubl|Carbonodithioic acid, O-ethyl ester|Ethyl xanthic acid|Ethylxanthate|Ethylxanthic acid|Ethylxanthogenic acid|O-Ethyl hydrogen carbonodithioate|O-Ethyl dithiocarbonic acid|Xanthogenic acid}}

| ImageFile = Ethyl xanthic acid.png

| ImageAlt = Ethyl xanthic acid molecule

| Section1 = {{Chembox Identifiers

| CASNo = 151-01-9

| CASNo_Ref = {{Cascite|correct|CAS}}

| ChEMBL = 3039661

| ChemSpiderID = 8492

| EC_number = 205-780-8

| EC_number_Comment =

| InChI = 1S/C3H6OS2/c1-2-4-3(5)6/h2H2,1H3,(H,5,6)

| UNII = B7B55M6MK1

| UNII_Comment =

| PubChem = 8823

| SMILES = CCOC(=S)S

}}

| Section2 = {{Chembox Properties

| AtmosphericOHRateConstant =

| Appearance = Colorless oily liquid{{cite web | url = https://www.merriam-webster.com/dictionary/xanthic%20acid | title = Xanthic acid | website = merriam-webster.com }}

| BoilingPt = Decomposes

| Formula = {{chem2|CH3CH2OCS2H}}

| C=3|H=6|O=1|S=2

| MeltingPtC = −53

| pKa = 1.6{{cite journal |doi=10.1021/jo01324a018|title=General acid-catalyzed decomposition of alkyl xanthates |year=1979 |last1=Millican |first1=Robert J. |last2=Sauers |first2=Carol K. |journal=The Journal of Organic Chemistry |volume=44 |issue=10 |pages=1664–1669 }}

| Solubility = Slightly

}}

}}

Ethyl xanthic acid is an organic compound with the chemical formula {{chem2|CH3CH2\sO\sC(\dS)\sSH}}. It can be viewed as an O-ethyl ester of dithiocarbonic O,S-acid (the formula of that acid is {{chem2|S\dC(OH)(SH)}}). Ethyl xanthic acid belongs to the category of thioacids, where the prefix thio- means that an oxygen atom in the compound is replaced by a sulfur atom.