Iron (II) carbonate

Structural formula
No drawing available
General
Surname	Iron (II) carbonate
other names	Carbonic iron
Molecular formula	FeCO 3
Brief description	gray-white, trigonal crystals
External identifiers / databases
CAS number 563-71-3 EC number 209-259-6 PubChem 11248 Wikidata Q4214595
properties
Molar mass	115.86 g / mol
Physical state	firmly
density	3.8 g / cm 3
Melting point	Decomposes at 300 ° C
solubility	0.651 mg / L (25 ° C)
safety instructions
GHS labeling of hazardous substances no GHS pictograms H and P phrases H: no H-phrases P: no P-phrases
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Iron (II) carbonate is an iron salt of carbonic acid . In nature it occurs in the form of the mineral siderite .

presentation

Iron (II) carbonate can be prepared by reacting an iron salt with a carbonate .

${\displaystyle \mathrm {FeCl_{2}+2\;Na_{2}CO_{3}\longrightarrow 2NaCl+FeCO_{3}} }$

properties

Iron (II) carbonate is almost insoluble in pure water, but soluble in water containing CO ₂ , where it dissolves with the formation of iron (II) hydrogen carbonate . It is also soluble in mineral acids .

${\displaystyle \mathrm {FeCO_{3}+\;CO_{2}{_{(aq)}}+\;H_{2}O\longrightarrow Fe(HCO_{3})_{2}} }$

It disintegrates when heated to over 300 ° C

${\displaystyle \mathrm {FeCO_{3}\longrightarrow FeO+CO_{2}} }$

use

Iron (II) carbonate is approved as an additive for animal feed and as a flame retardant .

Individual evidence

1. ↑ ^{a b c} iron (II) carbonate. In: spectrum. Spectrum der Wissenschaft Verlagsgesellschaft mbH, accessed on May 15, 2020 . 
2. ↑ ^{a b} Entry on iron (II) carbonate in the GESTIS substance database of the IFA , accessed on May 15, 2020(JavaScript required) .
3. ↑ ^{a b c d} Entry on iron carbonate. In: Römpp Online . Georg Thieme Verlag, accessed on May 15, 2020.
4. ↑ Iron (II) carbonate. In: The Periodic Table of the Elements online. Retrieved May 15, 2020 . 
5. ↑ Corrigendum to Implementing Regulation (EU) 2017/2330. In: Official Journal of the European Union. December 30, 2017, accessed May 15, 2020 .