Sodium orthosilicate

Sodium orthosilicate
	; Chemical structure of sodium orthosilicate
Names
	IUPAC name Tetrasodium silicate
	Other names Sodium orthosilicate
Identifiers
CAS Number	13472-30-5 ;
3D model (JSmol)	Interactive image;
ChemSpider	24265 ;
ECHA InfoCard	100.033.387
EC Number	236-741-3;
PubChem CID	26051;
UNII	TEU2JIC5PA ;
UN number	1759
CompTox Dashboard (EPA)	DTXSID6065501 ;
	InChI InChI=1S/4Na.O4Si/c;;;;1-5(2,3)4/q4+1;-4 Key: POWFTOSLLWLEBN-UHFFFAOYSA-N ; InChI=1S/4Na.O4Si/c;;;;1-5(2,3)4/q4+1;-4 Key: POWFTOSLLWLEBN-UHFFFAOYSA-N;
	SMILES ()()....;
Properties
Chemical formula	Na4O4Si
Molar mass	184.040 g·mol−1
Appearance	White powder
Melting point	1,018 °C (1,864 °F; 1,291 K)
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H302, H314, H335
Precautionary statements	P260, P301+P330+P331, P303+P361+P353, P305+P351+P338, P405, P501
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). (what is ?) Infobox references

Sodium orthosilicate is the chemical compound with the molecular formula Na
₄SiO
₄. It is one of the sodium silicates, specifically an orthosilicate, formally a salt of the unstable orthosilicic acid H
₄SiO
₄.^[2]^[3]^[4]

Uses

Sodium orthosilicate has been considered as an interfacial tension reducing additive in the waterflooding of oil fields for enhanced oil extraction. In laboratory settings, it was found to be more effective than sodium hydroxide for some types of oil.^[5]

Sodium orthosilicate has been found to stabilize ferrate films as an anticorrosion treatment of iron and steel surfaces.^[6]

Natural occurrence

Sodium orthosilicate has not been found in nature. However, the mineral chesnokovite, chemically the related salt disodium dihydrogen orthosilicate ₂ · 8H
₂O, was recently identified in the Kola Peninsula.^[7]

References

^ "Sodium Orthosilicate". American Elements. Retrieved September 18, 2018.
^ Baur, Werner H.; Halwax, Erich; Völlenkle, Horst (1986). "Comparison of the crystal structures of sodium orthosilicate, Na
₄SiO
₄, and sodium orthogermanate, Na
₄GeO
₄". Monatshefte für Chemie Chemical Monthly. 117 (6–7): 793–797. doi:10.1007/BF00810070. S2CID 92420380.
^ M,. G. Barker, P. G.Gadd (1981): "The preparation and crystal structure of sodium orthosilicate, Na
₄SiO
₄." Journal of Chemical Research, London Chemical Society, volume 9, pages S:274 (synopse), M:3446-3466 (main).
^ Schairer, J. F.; Bowen, N. L. (1956). "The system Na
₂O—Al
₂O
₃—SiO
₂". American Journal of Science. 254 (3): 129–195. Bibcode:1956AmJS..254..129S. doi:10.2475/ajs.254.3.129.
^ Campbell, Thomas C. (1977). "A Comparison of Sodium Orthosilicate and Sodium Hydroxide for Alkaline Waterflooding". All Days. doi:10.2118/6514-MS. {{cite book}}: |work= ignored (help)
^ John R. Harrison (1954): "Process for treating metals with ferrate solution". US Patent US2850415A, assigned to E. I. du Pont de Nemours
^ Pekov, I. V.; Chukanov, N. V.; Zadov, A. E.; Zubkova, N. V.; Pushcharovsky, D. Yu. (2007). "Chesnokovite, Na2[SiO2(OH)2] · 8H2O, the first natural sodium orthosilicate from the Lovozero alkaline pluton, Kola Peninsula: Description and crystal structure of a new mineral species". Geology of Ore Deposits. 49 (8): 727–738. Bibcode:2007GeoOD..49..727P. doi:10.1134/S1075701507080077. S2CID 94817330.

Zdroj:https://en.wikipedia.org?pojem=Sodium_orthosilicate
Text je dostupný za podmienok Creative Commons Attribution/Share-Alike License 3.0 Unported; prípadne za ďalších podmienok. Podrobnejšie informácie nájdete na stránke Podmienky použitia.

[sds-1] "Sodium Orthosilicate". American Elements. Retrieved September 18, 2018.

[baur-2] Baur, Werner H.; Halwax, Erich; Völlenkle, Horst (1986). "Comparison of the crystal structures of sodium orthosilicate, Na
₄SiO
₄, and sodium orthogermanate, Na
₄GeO
₄". Monatshefte für Chemie Chemical Monthly. 117 (6–7): 793–797. doi:10.1007/BF00810070. S2CID 92420380.

[barker-3] M,. G. Barker, P. G.Gadd (1981): "The preparation and crystal structure of sodium orthosilicate, Na
₄SiO
₄." Journal of Chemical Research, London Chemical Society, volume 9, pages S:274 (synopse), M:3446-3466 (main).

[sche-4] Schairer, J. F.; Bowen, N. L. (1956). "The system Na
₂O—Al
₂O
₃—SiO
₂". American Journal of Science. 254 (3): 129–195. Bibcode:1956AmJS..254..129S. doi:10.2475/ajs.254.3.129.

[camp-5] Campbell, Thomas C. (1977). "A Comparison of Sodium Orthosilicate and Sodium Hydroxide for Alkaline Waterflooding". All Days. doi:10.2118/6514-MS. {{cite book}}: |work= ignored (help)

[harri-6] John R. Harrison (1954): "Process for treating metals with ferrate solution". US Patent US2850415A, assigned to E. I. du Pont de Nemours

[chuk-7] Pekov, I. V.; Chukanov, N. V.; Zadov, A. E.; Zubkova, N. V.; Pushcharovsky, D. Yu. (2007). "Chesnokovite, Na2[SiO2(OH)2] · 8H2O, the first natural sodium orthosilicate from the Lovozero alkaline pluton, Kola Peninsula: Description and crystal structure of a new mineral species". Geology of Ore Deposits. 49 (8): 727–738. Bibcode:2007GeoOD..49..727P. doi:10.1134/S1075701507080077. S2CID 94817330.

[1]

[2]

[3]

[4]

[5]

[6]

[7]

Names
Chemical structure of sodium orthosilicate
IUPAC name Tetrasodium silicate
Other names Sodium orthosilicate
Identifiers
CAS Number	13472-30-5^N
3D model (JSmol)	Interactive image
ChemSpider	24265^Y
ECHA InfoCard	100.033.387
EC Number	236-741-3
PubChem CID	26051
UNII	TEU2JIC5PA^N
UN number	1759
CompTox Dashboard (EPA)	DTXSID6065501
InChI InChI=1S/4Na.O4Si/c;;;;1-5(2,3)4/q4+1;-4^Y Key: POWFTOSLLWLEBN-UHFFFAOYSA-N^Y InChI=1S/4Na.O4Si/c;;;;1-5(2,3)4/q4+1;-4 Key: POWFTOSLLWLEBN-UHFFFAOYSA-N
SMILES ()()....
Properties
Chemical formula	Na₄O₄Si
Molar mass	184.040 g·mol⁻¹
Appearance	White powder
Melting point	1,018 °C (1,864 °F; 1,291 K)
Hazards
GHS labelling:^[1]
Pictograms
Signal word	Danger
Hazard statements	H302, H314, H335
Precautionary statements	P260, P301+P330+P331, P303+P361+P353, P305+P351+P338, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). N (what is ^YN ?) Infobox references

Uses

Natural occurrence

See also

References