Grundinformationen
- Standard-SMILES
O=[Si](O)O- InChIKey
IJKVHSBPTUYDLN-UHFFFAOYSA-N- Summenformel
- H2O3Si
- Durchschnittliche Molmasse
- 78,099 g/mol
- Monoisotopische Masse
- 77,97732045
Überblick
See also: Silicate (annotation moved to).
Namen und Bezeichner
- Bevorzugter Name
- Metasilicic acid
- IUPAC
- dihydroxy(oxo)silane
- Lokaler Name
- Metakieselsure
- Englischer Name
- Silicic acid
- Summenformel
- H2O3Si
- Molmasse
- 78.1
Namen und Synonyme
Weitere Namen anzeigen
Datenbank-Bezeichner
- CAS
1343-98-2、7699-41-4- PubChem CID
- 14768
- DTXSID
DTXSID30872499- UNII
- 4OI8D3YOH1
- EC Number
- 231-716-3
- Nikkaji
- J215.993G
Eigenschaften
Berechnete Struktureigenschaften
- Polarare Oberfläche (TPSA)
- 57,5 Ų
- H-Brücken-Donoren
- 2
- H-Brücken-Akzeptoren
- 3
- Frei drehbare Bindungen
- 0
- Schwere Atome
- 4
- Formalladung
- 0
- Komplexität
- 26,3
Physikochemische Eigenschaften
- Schmelzpunkt
- 1704 ℃ · 1704℃
- Löslichkeit
- 2 O; · insoluble in H2O; soluble in HF
- Aggregatzustand
- powder
- Farbe
- White
- PH
- 1 · pKa1= 9.65, pKa2 = 13.09(25℃)
- Dielectric constant
- 2 · 2.0(Ambient)
- InChI
- 1S/H2O3Si/c1-4(2)3/h1-2H
- InChIKey
- IJKVHSBPTUYDLN-UHFFFAOYSA-N
- SMILES
- O[Si](O)=O
- CAS Datenbank
- 7699 · 7699-41-4(CAS DataBase Reference)
- EPA chemische Informationen
- Silicic acid (H2SiO3) (7699-41-4)
Sicherheit und Regulatorisches
GHS-Klassifizierung
GHS Classification
This chemical does not meet GHS hazard criteria for 4.8% (5 of 105) of reports.
Warning
H319 (90.5%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
P261, P264+P265, P271, P280, P304+P340, P305+P351+P338, P319, P337+P317, P403+P233, P405, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 105 reports by companies from 7 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Gefahrenhinweise
Regulatory Information
Chemical: Silicic acid (H2SiO3)
Silicic acid (H2SiO3): Does not have an individual approval but may be used as a component in a product covered by a group standard. It is not approved for use as a chemical in its own right.
Sicherheitsdaten
- OEB
- B
- OEL
- TWA: 6.0 mg/m3
- wgk
- 3
- tsca
- TSCA listed
- RTECS-Nr.
- VV8853000
- risk_code
- 36/37
- hazard_code
- Xi
- safety_code
- 22-26-36
- Speicherklasse
- 11 - Combustible Solids
- Hazard Classifications
- Eye Irrit. 2STOT SE 3
Chemie und Industrie
Verwendung und Herstellung
Anwendungen
BeschreibungSilicic acid is the general name that refers to the group of chemical compounds of the element hydrogen, silicon, and oxygen with the formula [SiOx(OH)4-2x]n. H4SiO4 is the most predominant form. Silicic acid is a hydrated form of silicon dioxide. It belongs to the family of Miscellaneous Silicates. These are inorganic compounds in which the largest metallic oxoanion is silicate, to which either no atom or a non metal atom is bonded. Silicic acid is contained in many foods, such as grain, fruit and vegetables (borage). It is commonly used in the manufacture of toothpastes and as a stationary phase for chromatography.It is utilized for the manufacture catalyst and catalyst carrier. It is involved in tungsten filament production as chemical reagent and flux. Further, it is used for oil and wax decoloring.
VerwendenSilicic acid is used in protein chromatography. Silicic acid has been used in a study to demonstrate the anti-biofilm potential of a glycolipid surfactant produced by a tropical marine strain of Serratia marcescens. Silicic acid has also been used to study the antioxidant activity of fresh and processed Jalapeno and Serrano peppers.
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Ergänzende Hinweise
DefinitionThe jellylike precipitate obtained when sodium silicate solution is acidified. The proportion of water varies with the conditions of preparation and decreases gradually during drying and ignition, until relatively pure silica remains. During drying the je
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