1-Propanethiol

{{chembox | Reference=<ref>[https://www.cdc.gov/niosh/ipcsneng/neng1492.html International Chemical Safety Card 0317]</ref> | ImageFile = 1-Propanethiol.svg | ImageClass = skin-invert | Name = Propanethiol | PIN = Propane-1-thiol | OtherNames = ''n''-Propylthiol<br />1-Propanethiol<br />Propan-1-thiol<br />Propyl mercaptan<br>Mercaptan C3 |Section1={{Chembox Identifiers | CASNo = 107-03-9 | ChEBI = 8473 | ChEBI_Ref = <ref name=ChEBI>[http://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:8473 ChEBI 8473]</ref> | ChEMBL = 1236818 | ChemSpiderID = 7560 | ChemSpiderID_Ref = <ref>[http://www.chemspider.com/Chemical-Structure.7560.html CSID:7560], accessed 19:05, Feb 10, 2013</ref> | EC_number = 203-455-5 | KEGG = C08390 | PubChem = 7848 | UNII_Ref = {{fdacite|correct|FDA}} | UNII = 4AB0N08V2H | UNNumber = 2402 | StdInChI=1S/C3H8S/c1-2-3-4/h4H,2-3H2,1H3 | StdInChIKey = SUVIGLJNEAMWEG-UHFFFAOYSA-N | SMILES = CCCS }}

|Section2={{Chembox Properties | C=3 | H=8 | S=1 | Appearance = Colorless to pale yellow liquid | Odor = cabbage-like<ref name=PGCH/> | Density = 0.84 g/mL | Solubility = Slight<ref name=PGCH/> | pKa = ~10.5{{citation needed|date=November 2014}} | MeltingPtC = -113 | BoilingPtC = 67 to 68 | VaporPressure = 155 mmHg<ref name=PGCH/> | MagSus = −58.5·10⁻⁶ cm³/mol }} |Section3={{Chembox Hazards | IDLH = N.D.<ref name=PGCH>{{PGCH|0526}}</ref> | PEL = none<ref name=PGCH/> | REL = C 0.5 ppm (1.6 mg/m³) [15-minute]<ref name=PGCH/> | FlashPtF= -5 | FlashPt_ref = <ref name=PGCH/> | GHS_ref=[https://pubchem.ncbi.nlm.nih.gov/compound/7848#section=Safety-and-Hazards] | GHSPictograms = {{GHS02}}{{GHS07}} | GHSSignalWord = Danger | HPhrases = {{H-phrases|225|302|319}} | PPhrases = {{P-phrases|210|233|240|241|242|243|264|264+265|270|280|301+317|303+361+353|305+351+338|330|337+317|370+378|403+235|501}} }} }}

'''Propanethiol''' is an organic compound with the molecular formula {{chem2|C3H8S|auto=1}} or {{chem2|CH3CH2CH2SH}}. It belongs to the group of thiols. It is a colorless liquid with a strong, offensive odor. It is moderately toxic and is less dense than water and slightly soluble in water. It is used as a feedstock for insecticides.<ref>[http://www.chemicalbook.com/ChemicalProductProperty_EN_CB6852694.htm 1-Propanethiol] {{Webarchive|url=https://web.archive.org/web/20150620091405/http://www.chemicalbook.com/ChemicalProductProperty_EN_CB6852694.htm |date=2015-06-20 }}, chemicalbook.com</ref> It is highly flammable and it gives off irritating or toxic fumes (or gases) in a fire. Heating it will cause rise in pressure with risk of bursting.<ref>[http://www.inchem.org/documents/icsc/icsc/eics1492.htm 1-Propanethiol], inchem.org</ref><ref>[https://www.cdc.gov/niosh/ipcsneng/neng1492.html 1-Propanethiol], International Chemical Safety Card</ref>

==Chemistry== Propanethiol is chemically classified among the thiols, which are organic compounds with molecular formulas and structural formulas similar to alcohols, except that sulfur-containing sulfhydryl group (-SH) replaces the oxygen-containing hydroxyl group in the molecule. Propanethiol's basic molecular formula is C₃H₇SH, and its structural formula is similar to that of the alcohol ''n''-propanol.

Propanethiol is manufactured commercially by the reaction of propene with hydrogen sulfide with ultraviolet light initiation in an anti-Markovnikov addition.<ref>Rector P.Louthan, United States Patent 3,050,452, Aug. 21, 1962, Preparation of Organic Sulfur Compounds</ref> It can also be prepared by the reaction of sodium hydrosulfide with 1-chloropropane.

==See also== * Isopropyl mercaptan (2-propanethiol)

== References == {{reflist}}

{{DEFAULTSORT:Propanethiol, 1-}} Category:Alkanethiols Category:Foul-smelling chemicals Category:Propyl compounds