<Table> Iron (III) sulfate <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th_colspan="2"> Names </Th> </Tr> <Tr> <Td_colspan="2"> IUPAC name Iron (III) sulfate </Td> </Tr> <Tr> <Td_colspan="2"> Other names Ferric sulfate Sulfuric acid, iron (3 +) salt (3: 2) </Td> </Tr> <Tr> <Th_colspan="2"> Identifiers </Th> </Tr> <Tr> <Td> CAS Number </Td> <Td> <Ul> <Li> 10028 - 22 - 5 </Li> </Ul> </Td> </Tr> <Tr> <Td> 3D model (JSmol) </Td> <Td> <Ul> <Li> Interactive image </Li> </Ul> </Td> </Tr> <Tr> <Td> ChEBI </Td> <Td> <Ul> <Li> CHEBI: 53438 </Li> </Ul> </Td> </Tr> <Tr> <Td> ChemSpider </Td> <Td> <Ul> <Li> 23211 </Li> </Ul> </Td> </Tr> <Tr> <Td> ECHA InfoCard </Td> <Td> 100.030. 054 </Td> </Tr> <Tr> <Td> PubChem CID </Td> <Td> <Ul> <Li> 24826 </Li> </Ul> </Td> </Tr> <Tr> <Td> RTECS number </Td> <Td> NO8505000 </Td> </Tr> <Tr> <Td> UNII </Td> <Td> <Ul> <Li> 4YKQ1X5E5Y </Li> </Ul> </Td> </Tr> <Tr> <Td_colspan="2"> InChI (show) <Ul> <Li> InChI = 1S / 2Fe. 3H2O4S / c;; 3 * 1 - 5 (2, 3) 4 / h;; 3 * (H2, 1, 2, 3, 4) / q2 * + 3;;; / p - 6 Key: RUTXIHLAWFEWGM - UHFFFAOYSA - H </Li> <Li> InChI = 1 / 2Fe. 3H2O4S / c;; 3 * 1 - 5 (2, 3) 4 / h;; 3 * (H2, 1, 2, 3, 4) / q2 * + 3;;; / p - 6 Key: RUTXIHLAWFEWGM - CYFPFDDLAR </Li> </Ul> </Td> </Tr> <Tr> <Td_colspan="2"> SMILES (show) <Ul> <Li> (Fe + 3). (Fe + 3). (O -) S (= O) (= O) (O -). (O -) S ((O -)) (= O) = O. (O -) S ((O -)) (= O) = O </Li> </Ul> </Td> </Tr> <Tr> <Th_colspan="2"> Properties </Th> </Tr> <Tr> <Td> Chemical formula </Td> <Td> Fe (SO) </Td> </Tr> <Tr> <Td> Molar mass </Td> <Td> 399.88 g / mol (anhydrous) 489.96 g / mol (pentahydrate) 562.00 g / mol (nonahydrate) </Td> </Tr> <Tr> <Td> Appearance </Td> <Td> grayish - white crystals </Td> </Tr> <Tr> <Td> Density </Td> <Td> 3.097 g / cm (anhydrous) 1.898 g / cm (pentahydrate) </Td> </Tr> <Tr> <Td> Melting point </Td> <Td> 480 ° C (896 ° F; 753 K) (anhydrous) 175 ° C (347 ° F) (nonahydrate) </Td> </Tr> <Tr> <Td> Solubility in water </Td> <Td> slightly soluble </Td> </Tr> <Tr> <Td> Solubility </Td> <Td> sparingly soluble in alcohol negligible in acetone, ethyl acetate insoluble in sulfuric acid, ammonia </Td> </Tr> <Tr> <Td> Refractive index (n) </Td> <Td> 1.814 (anhydrous) 1.552 (nonahydrate) </Td> </Tr> <Tr> <Th_colspan="2"> Hazards </Th> </Tr> <Tr> <Td> NFPA 704 </Td> <Td> 0 0 </Td> </Tr> <Tr> <Td_colspan="2"> Lethal dose or concentration (LD, LC): </Td> </Tr> <Tr> <Td> LD (median dose) </Td> <Td> 500 mg / kg (oral, rat) </Td> </Tr> <Tr> <Td_colspan="2"> US health exposure limits (NIOSH): </Td> </Tr> <Tr> <Td> REL (Recommended) </Td> <Td> TWA 1 mg / m </Td> </Tr> <Tr> <Th_colspan="2"> Related compounds </Th> </Tr> <Tr> <Td> Other anions </Td> <Td> Iron (III) chloride Iron (III) nitrate </Td> </Tr> <Tr> <Td> Related compounds </Td> <Td> Iron (II) sulfate </Td> </Tr> <Tr> <Td_colspan="2"> Except where otherwise noted, data are given for materials in their standard state (at 25 ° C (77 ° F), 100 kPa). </Td> </Tr> <Tr> <Td_colspan="2"> N verify (what is?) </Td> </Tr> <Tr> <Td_colspan="2"> Infobox references </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Names </Th> </Tr>

What is the formula mass of ferric sulphate fe2(so4)3
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