{{chembox
| Watchedfields = changed
| verifiedrevid = 477003658
| ImageFile1= Sulfuric-acid-2D-dimensions.svg
| ImageAlt1 = S=O bond length = 142.2 pm, <br>S-O bond length = 157.4 pm, <br>O-H bond length = 97 pm
| ImageSize1 = 180
| ImageFileL1 = Sulfuric-acid-Givan-et-al-1999-3D-vdW.png
| ImageCaptionL1 = Space-fillin model
| ImageFileR1 = Sulfuric-acid-Givan-et-al-1999-3D-balls.png
| ImageCaptionR1 = Ball-an-stick model
| ImageFile4 = Sulphuric acid 96 percent extra pure.jpg
| IUPACName = Sulfuric acid
| OtherNames = Ile o vitriol
| Section1 = {{Chembox Identifiers
| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
| ChemSpiderID = 1086
| UNII_Ref = {{fdacite|correct|FDA}}
| UNII = O40UQP6WCF
| KEGG_Ref = {{keggcite|correct|kegg}}
| KEGG = D05963
| InChI = 1/H2O4S/c1-5(2,3)4/h(H2,1,2,3,4)
| InChIKey = QAOWNCQODCNURD-UHFFFAOYAC
| ChEBI_Ref = {{ebicite|correct|EBI}}
| ChEBI = 26836
| SMILES = OS(=O)(=O)O
| ChEMBL_Ref = {{ebicite|correct|EBI}}
| ChEMBL = 572964
| StdInChI_Ref = {{stdinchicite|correct|chemspider}}
| StdInChI = 1S/H2O4S/c1-5(2,3)4/h(H2,1,2,3,4)
| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}
| StdInChIKey = QAOWNCQODCNURD-UHFFFAOYSA-N
| CASNo = 7664-93-9
| CASNo_Ref = {{cascite|correct|CAS}}
| RTECS = WS5600000
| EINECS = 231-639-5
| UNNumber = 1830
 }}
| Section2 = {{Chembox Properties
| Formula = {{chem|H|2|S|O|4}}
| MolarMass = 98.079 g/mol
| Appearance = Clear, colourless, odorless liquid
| Density = 1.84 g/cm<sup>3</sup>, liquid
| Solubility = miscible
| MeltingPtC = 10
| BoilingPtC = 337
| Boiling_notes = When sulfuric acid is abuin {{convert|300|C|F}}, it will decompose slowly
| Viscosity = 26.7 [[Poise|cP]] (20&nbsp;°C)
| pKa = −3, 1.99
 }}
| Section4 = {{Chembox Thermochemistry
|   DeltaHf = −814&nbsp;kJ·mol<sup>−1</sup><ref name=b1>{{cite book| author = Zumdahl, Steven S.|title =Chemical Principles 6th Ed.| url = https://archive.org/details/chemicalprincipl0000zumd_u9g0| publisher = Houghton Mifflin Company| year = 2009| isbn = 0-618-94690-X|page=A23}}</ref>
|   Entropy = 157&nbsp;J·mol<sup>−1</sup>·K<sup>−1</sup><ref name=b1/>
 }}
| Section7 = {{Chembox Hazards
| ExternalMSDS = [http://www.ilo.org/public/english/protection/safework/cis/products/icsc/dtasht/_icsc03/icsc0362.htm ICSC 0362]
| EUIndex = 016-020-00-8
| FlashPt = Non-flammable
| EUClass = {{Hazchem C}}{{Hazchem N}}<ref>{{cite web|url=http://www.msdsauthoring.com/sulfuric_acid_nugentec_ghs_msds.pdf|title=NuGenTec Material Safety Datasheet-Sulfuric acid|access-date=2014-09-11|archive-date=2013-02-15|archive-url=https://www.webcitation.org/6ES1vVfc7?url=http://www.msdsauthoring.com/sulfuric_acid_nugentec_ghs_msds.pdf|url-status=dead}}</ref><ref>{{cite web|url=http://www.ilo.org/dyn/icsc/showcard.display?p_lang=en&p_card_id=0362|title=Sulfuric acid IPCS|quote=The substance is harmful to aquatic organisms.(ENVIRONMENTAL DATA)}}</ref>
| NFPA-H = 3
| NFPA-F = 0
| NFPA-R = 2
| NFPA-S = W
| RPhrases = {{R35}}
| SPhrases = {{S1/2}} {{S26}} {{S30}} {{S45}}
| GHSPictograms = {{GHS corrosion}}
| GHSSignalWord = '''Danger'''
| HPhrases = {{H-phrases|314}}
| PPhrases = {{P-phrases|260|264|280|301+330+331|303+361+353|363|304+340|305+351+338|310|321|310|405|501}}
| LD50 = 2140 mg/kg (oral, rat), [[Median lethal concentration|LC<sub>50</sub>]] = 25 mg/m<sup>3</sup> (inhalation, rat)
| TLV-TWA = 1 mg/m<sup>3</sup>
| TLV-STEL = 2 mg/m<sup>3</sup>
| TLV = 15 mg/m<sup>3</sup> (IDLH)
 }}
| Section8 = {{Chembox Related
| Function = [[strong acid]]s
| OtherFunctn = [[Selenic acid]]<br />[[Hydrochloric acid]]<br />[[Nitric acid]]<br />[[Chromic acid]]
| OtherCpds = [[Sulphurous acid]]<br />[[Peroxymonosulphuric acid]]<br />[[Sulphur trioxide]]<br />[[Oleum]]
 }}
}}
'''Sulphuric acid''' ([[Sulphur#Spellin an etymology|alternative spellin]] '''sulfuric acid''') is a heichly [[corrosive]] [[strang acid|strang]] [[mineral acid]] wi the [[molecular formula]] [[Hydrogen|H<sub>2</sub>]][[sulphate|SO<sub>4</sub>]].