Strontium formate

Structural formula
General
Surname	Strontium formate
Molecular formula	C 2 H 2 SrO 4
External identifiers / databases
EC number	209-776-7
ECHA InfoCard	100,008,889
PubChem	68967
Wikidata	Q1766207
properties
Molar mass	177.65 g · mol -1 (neat); 213.68 g mol −1 (dihydrate);
Physical state	firmly
density	2.695 g cm −3 (pure substance); 2.25 g cm −3 (dihydrate);
solubility	70.2 g l −1 at 0 ° C (dihydrate); 163.1 g l −1 at 51.4 ° C (dihydrate); insoluble in ethanol and ether ;
safety instructions
GHS hazard labeling ; no classification available
GHS hazard labeling ; no classification available
Thermodynamic properties
ΔH f 0	−1393.3 kJ / mol
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Strontium formate is the strontium salt of formic acid with the constitutional formula Sr (HCOO) ₂ .

Manufacturing

Strontiumformiat can be prepared by reaction of strontium carbonate or strontium are shown with formic acid.

{\ displaystyle \ mathrm {SrCO_ {3} +2 \ HCOOH \ \ longrightarrow \ Sr (HCOO) _ {2} + H_ {2} O + CO_ {2} \ uparrow}}

{\ displaystyle \ mathrm {Sr (OH) _ {2} +2 \ HCOOH \ \ longrightarrow \ Sr (HCOO) _ {2} +2 \ H_ {2} O}}

properties

Temperature dependence of the solubility of strontium formate dihydrate in water

Strontium formate crystallizes as a dihydrate in the orthorhombic crystal system in the space group P 2 ₁ 2 ₁ 2 ₁ (space group number 19) and the lattice parameters a = 730 pm , b = 1199 pm and c = 713 pm. In the unit cell contains four formula units . Template: room group / 19

The dihydrate is to be between 50 and 150 ° C crystal water from. The anhydrate also crystallizes in the orthorhombic crystal system in the same space group as the dihydrate. The lattice parameters are a = 687 pm, b = 874 pm and c = 727 pm. In the unit cell also contains four formula units .

Strontium formate decomposes on heating to form strontium oxide .

Individual evidence

^ ^A ^b ^c Jean D'Ans, Ellen Lax: Pocket book for chemists and physicists. 3. Elements, inorganic compounds and materials, minerals, Volume 3. 4. Edition, Springer, 1997, ISBN 978-3-5406-0035-0 , pp. 744f. ( limited preview in Google Book search).
↑ ^a ^b ^c ^d R. Abegg, F. Auerbach: Handbuch der inorganic Chemie , Verlag S. Hirzel, Vol. 2, 1908. P. 231; Full text
^ ^A ^b H. Stanley: The Solubility of Some Salts of the Lower Fatty Acids. In: The Chemical News 1904 , 89 , p. 193. Full text
↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
↑ David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Standard Thermodynamic Properties of Chemical Substances, pp. 5-21.
↑ ^a ^b ^c A. Gonzalez, J. Jimenez, F. Rull: "On the kinetics of thermal decomposition of anhydrous strontium formats in vacuum" in Crystal Research and Technology 1985 , 20 (1), pp. K11-K14. doi : 10.1002 / crat.2170200130
↑ NR McQuaker, KB Harvey: Infrared and Raman Spectra of Single Crystals of Anhydrous strontium formats . In: Canadian Journal of Chemistry . 50 (10), 1972, pp. 1453-1460, doi : 10.1139 / v72-231 .

[Lax-1] A ^b ^c Jean D'Ans, Ellen Lax: Pocket book for chemists and physicists. 3. Elements, inorganic compounds and materials, minerals, Volume 3. 4. Edition, Springer, 1997, ISBN 978-3-5406-0035-0 , pp. 744f. ( limited preview in Google Book search).

[Abegg-2] R. Abegg, F. Auerbach: Handbuch der inorganic Chemie , Verlag S. Hirzel, Vol. 2, 1908. P. 231; Full text

[Stanley-3] A ^b H. Stanley: The Solubility of Some Salts of the Lower Fatty Acids. In: The Chemical News 1904 , 89 , p. 193. Full text

[NV-4] This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.

[CRC90_5_21-5] David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Standard Thermodynamic Properties of Chemical Substances, pp. 5-21.

[Gonzalez-6] A. Gonzalez, J. Jimenez, F. Rull: "On the kinetics of thermal decomposition of anhydrous strontium formats in vacuum" in Crystal Research and Technology 1985 , 20 (1), pp. K11-K14. doi : 10.1002 / crat.2170200130

[McQuaker-7] NR McQuaker, KB Harvey: Infrared and Raman Spectra of Single Crystals of Anhydrous strontium formats . In: Canadian Journal of Chemistry . 50 (10), 1972, pp. 1453-1460, doi : 10.1139 / v72-231 .