(ammonium iron(III) sulfate, dodecahydrate) Formula: FeNH4(SO4)2?H2O Formula Weight: 482.2 CAS Number: 7783-83-7 Specific Gravity: 1L = 1.71 Kg

Formula: FeSO₄ 7H₂O Formula Weight: 278.02 CAS Number: 7782-63-0 Synonym(s): Iron(II) sulfate, heptahydrate

Formula: Fe(NH₄)₂(SO₄)₂•6H₂O Formula Weight: 392.13 CAS Number: 7783-85-9 Synonym(s): (ammonium iron(II) sulfate, hexahydrate)

(iron(III) nitrate, nonohydrate) Formula: Fe(NO3)3?H2O Formula Weight: 404 CAS Number: 7782-61-8 Specific Gravity: 1L = 1.68 Kg