{{위키데이터 속성 추적}}
{{Chembox
| Watchedfields = changed
| verifiedrevid = 476992453
| ImageFile1 = Na2SiO3idealized.png
| ImageSize1 = 244
| ImageName1 = Structural formula of polymeric sodium silicate
| ImageFile2 = Sodium-metasilicate-chain-from-xtal-3D-balls.png
| ImageFile2_Ref = {{chemboximage|correct|??}}
| ImageSize2 = 244
| ImageName2 = Ball and stick model of polymeric sodium silicate
| ImageFile3 = Křemičitan sodný.PNG
| ImageFile3_Ref = {{chemboximage|correct|??}}
| ImageSize3 = 244
| ImageName3 = Sample of sodium silicate in a vial
| IUPACName = Sodium metasilicate
| OtherNames = 
|Section1={{Chembox Identifiers
| index1_label = pentahydrate
| index2_label = nonhydrate
| Abbreviations = E550
| CASNo = 6834-92-0
| CASNo1 = 10213-79-3
| CASNo2 = 13517-24-3
| CASNo_Ref = {{cascite|correct|CAS}}
| UNII =  052612U92L
| UNII2 = D8D44215LZ
| PubChem = 23266
| PubChem1 = 61495
| PubChem2 = 61639
| ChemSpiderID = 21758
| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
| EINECS = 600-279-4
| EC_number = 229-912-9
| RTECS = VV9275000
| UNNumber = 1759 3253
| MeSHName = Sodium+metasilicate
| ChEBI_Ref = {{ebicite|correct|EBI}}
| ChEBI = 60720
| SMILES = [Na+].[Na+].[O-][Si]([O-])=O
| StdInChI = 1S/2Na.O3Si/c;;1-4(2)3/q2*+1;-2
| StdInChI_Ref = {{stdinchicite|correct|chemspider}}
| InChI = 1/2Na.O3Si/c;;1-4(2)3/q2*+1;-2
| StdInChIKey = NTHWMYGWWRZVTN-UHFFFAOYSA-N
| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}
| InChIKey = NTHWMYGWWRZVTN-UHFFFAOYAB
 }}
|Section2={{Chembox Properties
| Na=2 | O=3 | Si=1
| Formula = Na<sub>2</sub>SiO<sub>3</sub>
| Appearance = White crystals
| Density = 2.61 g/cm<sup>3</sup>
| MeltingPtC = 1088<!-- or 1089?-->
| RefractIndex = 1.52
| Solubility = 22.2 g/100 ml (25&nbsp;°C) <br> 160.6 g/100 ml (80&nbsp;°C)
| SolubleOther = insoluble in [[에탄올|alcohol]]
 }}
|Section3={{Chembox Thermochemistry
| DeltaHf = −1561.43 kJ/mol
| DeltaGf = −1427 kJ/mol
| Entropy = 113.71 J/(K·mol)
| HeatCapacity = 111.8 J/(K·mol)
 }}
|Section4={{Chembox Hazards
| ExternalSDS = [http://www.avantormaterials.com/documents/MSDS/USA/English/S4982_msds_us_Default.pdf Avantor Performance Materials]
| NFPA-H = 2
| NFPA-F = 0
| NFPA-R = 0
| LD50 = 1153{{clarify|reason=units?|date=January 2017}} (rat, oral)
| GHSPictograms = {{GHS05}}{{GHS07}}
| GHSSignalWord = Danger
| HPhrases = {{H-phrases|302|314|315|318|319|335}}
| PPhrases = {{P-phrases|260|261|264|270|271|280|301+312|301+330+331|302+352|303+361+353|304+340|305+351+338|310|312|321|330|332+313|337+313|362|363|403+233|405|501}}
 }}
}}
'''규산 나트륨'''(sodium silicate)은 Na<sub>2</sub>SiO<sub>3</sub> 화학식을 지닌 화합물로, [[규산염]]의 하나이다. 탄산나트륨과 석영 가루를 융합해서 얻는다. 냄새가 없으며 흰 빛을 띄는 고체이다. [[탄산 나트륨]]과 [[이산화 규소]]는 녹을 때 [[이산화 탄소]]와 규산 나트륨을 형성하며 반응한다:<ref name = "Greenwood">Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Oxford: Butterworth-Heinemann. {{ISBN|0-08-037941-9}}.</ref>
:Na<sub>2</sub>CO<sub>3</sub> + SiO<sub>2</sub> → Na<sub>2</sub>SiO<sub>3</sub> + CO<sub>2</sub>

== 이용 ==
콘크리트 경화촉진제<ref>{{서적 인용|제목=토목기사 실기|성=박영태|이름=|날짜=2019|판=|출판사=|쪽=424|장=}}</ref>, [[기초]] 공사 터파기 토질이 붕괴성 토질인 경우 지반의 화학적 안정화에 쓰인다.

== 각주 ==
<references />

== 외부 링크 ==
{{위키공용분류|Sodium silicates|Sodium silicates}}
* {{언어링크|en}} [http://www.cees-silicates.eu Centre Européen d'Etudes des Silicates] {{웨이백|url=http://www.cees-silicates.eu/ |date=20170915194957 }}
* [http://www.hani.co.kr/arti/science/science_general/110820.html 한겨레 - 다 흡수해버리겠어! - 물유리(water glass)]

{{전거 통제}}
{{토막글|화학}}

[[분류:시멘트]]
[[분류:콘크리트]]
[[분류:나트륨 화합물]]
[[분류:산소 화합물]]
[[분류:규산염]]