From Wikipedia, the free encyclopedia
Chemical compound
Sodium orthosilicate
Chemical structure of sodium orthosilicate
|
Names
|
IUPAC name
Tetrasodium silicate
|
Other names
Sodium orthosilicate
|
Identifiers
|
|
|
|
|
ChemSpider
|
|
ECHA InfoCard
|
100.033.387
|
EC Number
|
|
|
|
UNII
|
|
UN number
|
1759
|
|
|
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
|
[O-][Si]([O-])([O-])[O-].[Na+].[Na+].[Na+].[Na+]
|
Properties
|
|
Na
4
O
4
Si
|
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]
|
|
|
|
Danger
|
|
H302
,
H314
,
H335
|
|
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 [77 °F], 100 kPa).
|
Chemical compound
Sodium orthosilicate
is the
chemical compound
with the molecular formula
Na
4
SiO
4
. It is one of the
sodium silicates
, specifically an
orthosilicate
, formally a
salt
of the unstable
orthosilicic acid
H
4
SiO
4
.
[2]
[3]
[4]
Uses
[
edit
]
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
[
edit
]
Sodium orthosilicate has not been found in nature. However, the mineral
chesnokovite
, chemically the related salt disodium dihydrogen orthosilicate [
Na
+
]
2
[
SiO
2
(OH)
2?
2
] · 8
H
2
O
, was recently identified in the
Kola Peninsula
.
[7]
See also
[
edit
]
References
[
edit
]
- ^
"Sodium Orthosilicate"
.
American Elements
. Retrieved
September 18,
2018
.
- ^
Baur, Werner H.; Halwax, Erich; Vollenkle, Horst (1986). "Comparison of the crystal structures of sodium orthosilicate,
Na
4
SiO
4
, and sodium orthogermanate,
Na
4
GeO
4
".
Monatshefte fur 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
4
SiO
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
2
O
?
Al
2
O
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
.
- ^
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
.