What is Citric acid?
{{Chembox |Verifiedfields=changed |Watchedfields=changed |verifiedrevid=477313834 |Name=Citric acid |ImageFileL1=Zitronensäure - Citric acid.svg |ImageSizeL1=150px |ImageFileR1=Citric-acid-3D-balls.png |ImageSizeR1=150px |ImageFile2={{CSS image crop|Image=Zitronensäure Kristallzucht.jpg|bSize=300|cHeight=210|oTop=40}} |ImageSize2=320px |PIN=2-Hydroxypropane-1,2,3-tricarboxylic acid |Section1={{Chembox Identifiers | IUPHAR_ligand = 2478 | PubChem = 311 | PubChem1 = 22230 | PubChem1_Comment = (monohydrate) | UNII_Ref = {{fdacite|correct|FDA}} | UNII = XF417D3PSL | KEGG_Ref = {{keggcite|correct|kegg}} | KEGG = D00037 | InChI = 1/C6H8O7/c7-3(8)1-6(13,5(11)12)2-4(9)10/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12) | ChEBI_Ref = {{ebicite|correct|EBI}} | ChEBI = 30769 | DrugBank_Ref = {{drugbankcite|correct|drugbank}} | DrugBank = DB04272 | SMILES = OC(=O)CC(O)(C(=O)O)CC(=O)O | InChIKey = KRKNYBCHXYNGOX-UHFFFAOYAM | ChEMBL_Ref = {{ebicite|correct|EBI}} | ChEMBL = 1261 | StdInChI_Ref = {{stdinchicite|correct|chemspider}} | StdInChI = 1S/C6H8O7/c7-3(8)1-6(13,5(11)12)2-4(9)10/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12) | StdInChIKey_Ref = {{stdinchicite|correct|chemspider}} | StdInChIKey = KRKNYBCHXYNGOX-UHFFFAOYSA-N | CASNo = 77-92-9 | CASNo_Ref = {{cascite|correct|CAS}} | ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} | ChemSpiderID = 305 | RTECS = GE7350000 | EINECS = 201-069-1 }} |Section2={{Chembox Properties | C=6 | H=8 | O=7 | Appearance = Crystalline white solid | Odor = Odorless | MolarMass = 192.123 g/mol (anhydrous), 210.038 g/mol (monohydrate)<ref>{{PubChemLink|22230}}</ref> | Density = 1.665 g/cm<sup>3</sup> (anhydrous)<br> 1.542 g/cm<sup>3</sup> (18 °C, monohydrate) | Solubility = 117.43 g/100 mL (10 °C)<br> 147.76 g/100 mL (20 °C)<br> 180.89 g/100 mL (30 °C)<br> 220.19 g/100 mL (40 °C)<br> 382.48 g/100 mL (80 °C)<br> 547.79 g/100 mL (100 °C)<ref name=pubchem>{{PubChemLink|311}}</ref> | SolubleOther = soluble in [[acetone]], [[alcohol]], [[ether]], [[ethyl acetate]], [[dimethyl sulfoxide|DMSO]]<br> insoluble in [[be