Tetrahydroxysilan

Orthosilicic acid

HCID 14942CAS 10193-36-9

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Grundinformationen

Standard-SMILES: O[Si](O)(O)O
InChIKey: RMAQACBXLXPBSY-UHFFFAOYSA-N
Summenformel: H4O4Si
Durchschnittliche Molmasse: 96,11 g/mol
Monoisotopische Masse: 95,98788514

Überblick

Silicic acid is a silicon oxoacid. It is a conjugate acid of a trihydrogensilicate(1-).

Namen und Bezeichner

Bevorzugter Name: Orthosilicic acid
IUPAC: silicic acid
Lokaler Name: Tetrahydroxysilan
Englischer Name: tetrahydroxysilane
Summenformel: H4O4Si
Molmasse: 96.11

Namen und Synonyme

SILICIC ACIDOrthosilicic acidMonosilicic acidSilicon tetrahydroxideSilicasolTetrahydroxysiliconSilicic acid (Si(OH)4)Silicic acid (ortho)silanetetrolKieselsaeureOrthokieselsaeureEINECS 233-477-0

Weitere Namen anzeigen

silicicacisiliclc acidMONOSILICICACIDtetrahydroxysilane

UNII-623B93YABHtetrahydroxidosilicon623B93YABHH4SiO4Silicon hydroxide (Si(OH)4)CHEBI:26675ORTHOSILICIC ACID (H4SIO4)(Si(OH)4)

Datenbank-Bezeichner

CAS: 10193-36-9、1343-98-2
PubChem CID: 14942
DTXSID: DTXSID5058721
ChEBI: CHEBI:26675
UNII: 623B93YABH
EC Number: 215-683-2、233-477-0
Nikkaji: J148.210F

Eigenschaften

Berechnete Struktureigenschaften

Polarare Oberfläche (TPSA): 80,9 Å²
H-Brücken-Donoren: 4
H-Brücken-Akzeptoren: 4
Frei drehbare Bindungen: 0
Schwere Atome: 5
Formalladung: 0
Komplexität: 19,1

Experimentelle und physikochemische Eigenschaften

Chemical ClassesMineral Dusts -> Other Mineral Dusts

CosmeticsViscosity controlling; Anticaking; Bulking; Opacifying; Abrasive; Absorbent

Density2.2 @25 °C

Melting Point1610 °C

Vapor Pressure10 [mm Hg] @1732 °C

Food Contact SubstancesFCS -> FDA Inventory of Food Contact Substances Listed in 21 CFR

Physikochemische Eigenschaften

Siedepunkt: 153 · 153-156 °C(Press: 2 Torr)
Dichte: 2.63 g/cm3 · 2.63 g/cm3
Dampfdruck: 1.333 hPa · 1.333hPa at 25℃
pka: 12.39 · 12.39±0.53(Predicted)
Aggregatzustand: exists only in solution
Farbe: exists only in solution
Wasserlöslichkeit: 100 ng/L · 100ng/L at 25℃
Henry's Law Constant: 2.3 · 2.3×1010 mol/(m3Pa) at 25℃, Plyasunov (2012)
LogP: -1 at · -1 at 25℃
EPA chemische Informationen: Silicic acid (H4SiO4) (10193-36-9)

Sicherheit und Regulatorisches

GHS-Klassifizierung

GHS Classification · 6 Einträge

This chemical does not meet GHS hazard criteria for 100% (168 of 168) of all reports.

Not Classified

Aggregated GHS information provided per 168 reports by companies from 1 notifications to the ECHA C&L Inventory.

This chemical does not meet GHS hazard criteria for 0.7% (1 of 135) of reports.

Danger

H314 (99.3%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]

Gefahrenhinweise

Regulatory Information · 6 Einträge

Chemical: Silicic acid (H4SiO4)

Chemical: Silicic acid

Silicic acid is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Silicic acid are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)

Status: Active Update: 08-07-2021 https://echa.europa.eu/registration-dossier/-/registered-dossier/32043

Silicic acid (H4SiO4): 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.

Silicic acid: Does not have an individual approval but may be used under an appropriate group standard

Hazards SummaryCauses lung changes including focal fibrosis in intermittent inhalation studies of rats; [RTECS] A skin and strong eye irritant; Targets the lungs; [Sigma-Aldrich MSDS]

Hazard Classes and Categories · 2 Einträge

Skin Corr. 1 (99.3%)

Not Classified

Sicherheit und Schutzausrüstung

Protective Action Criteria (PAC) · 3 Einträge

18 [mg/m3]

200 [mg/m3]

1200 [mg/m3]

Toxikologische Informationen

Adverse EffectsFibrogenic - Inducing tissue injury and fibrosis (scarring).

Sicherheitsdaten

tsca: TSCA listed

Chemie und Industrie

Verwendung und Herstellung

Uses · 1 Eintrag

Opal is the natural form; Used as a sorbent for column chromatography; Approximate molecular formula of H2-Si-O3; [Merck Index] A hydrated form of silicon dioxide. It is commonly used in the manufacture of TOOTHPASTES and as a stationary phase for CHROMATOGRAPHY. [ChemIDplus] Gel forms are used to absorb vapors and as insecticide carriers; [REPROTOX] Permitted for use as an inert ingredient in non-food pesticide products; [EPA]

U.S. Production2023: 50,000 - <250,000 lb

Industry UsesSolvent

Household ProductsInformation on 9 consumer products that contain Silicic acid in the following categories is provided:

Use ClassificationCosmetics -> Viscosity controlling; Anticaking; Bulking; Opacifying; Abrasive; Absorbent

General Manufacturing Information · 3 Einträge

Paint and Coating Manufacturing

Silicic acid: ACTIVE

Silicic acid (H4SiO4): ACTIVE