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Trimethoxyvinylsilan
VTMS · a171 · TRIMETHOXYVINYLSILANE · VTMO · ethenyltrimethoxy-Silane · kbm1003 · vts-m · Co-Formula CFS-027
Identifikatoren & physikalische Daten
| CAS No. | 2768-02-7 |
|---|---|
| Summenformel | C5H12O3Si |
| Durchschnittliche Molmasse | 148,23 g/mol |
| Monoisotopische Masse | 148,05557077 g/mol |
| SMILES | C=C[Si](OC)(OC)OC |
| InChIKey | NKSJNEHGWDZZQF-UHFFFAOYSA-N |
| PubChem CID | 76004 |
| EC No. | 220-449-8 |
| DTXSID | DTXSID2029240 |
| Lokaler Name | Trimethoxyvinylsilan |
Chemische & physikalische Eigenschaften
| Polarare Oberfläche (TPSA) | 27,7 |
|---|---|
| H-Brücken-Donoren | 0 |
| H-Brücken-Akzeptoren | 3 |
| Frei drehbare Bindungen | 4 |
| Schwere Atome | 9 |
| Formalladung | 0 |
| Komplexität | 81,9 |
| Stoffklassen | Other Classes -> Other Organic Compounds |
| SpringerMaterials Properties | Viscosity |
| Dichte | 1.13 @25 °CSpecific Density: 0.94 (water = 1)0.968 g/mL at 25 °C (lit.) |
| Löslichkeit | Water Solubility: 1,000,000 mg/L at 20°C (modeled data).slightly soluble |
| Flammpunkt | 25.5°C73 °F |
| Siedepunkt | 123 °C @760 [mm Hg]123°C at 1013 hPa (converted to 101.3 kPa) (760 mm Hg)123 °C (lit.) |
| Schmelzpunkt | −97°C<-70°C |
| Dampfdruck | 11.9 hPa (converted to 1.19 kPa) at 20°C88 hPa (55 °C) |
| Food Contact Substances | FCS -> FDA Cumulative Estimated Daily Intake (CEDI)FCS -> FDA Inventory of Effective Food Contact Substance (FCS) Notifications |
| Physical Description | Light yellow liquid[Aldrich MSDS] Colorless liquid with a fruity odor[Alfa Aesar MSDS]Liquid (at standard temperature and pressure) |
| Stability/Shelf Life | Hydrolytically unstableat pH = 7 (20°C–25°C) half-life <0.2 h |
| Selbstentzündungstemperatur | 224°C |
| Brechungsindex | n20/D 1.392(lit.) |
| Lagerbedingungen | Store below +30°C. |
| Aggregatzustand | liquid |
| Farbe | Colorless to Almost colorless |
| Wichte | 0.970 |
| Geruch | Fruity odor |
| Explosionsgrenze | 1.1%(V) |
| BRN | 1099136 |
| InChI | 1S/C5H12O3Si/c1-5-9(6-2,7-3)8-4/h5H,1H2,2-4H3 |
| InChIKey | NKSJNEHGWDZZQF-UHFFFAOYSA-N |
| SMILES | CO[Si](OC)(OC)C=C |
| LogP (Verteilungskoeffizient) | -2--0.82 at 20℃ |
| CAS Datenbank | 2768-02-7(CAS DataBase Reference) |
| NIST chemische Informationen | Vinyltrimethoxysilane(2768-02-7) |
| EPA chemische Informationen | Vinyltrimethoxysilane (2768-02-7) |
Sicherheit & Vorschriften
| GHS-Einstufung | WarningH317: May cause an allergic skin reaction [Warning Sensitization, Skin]P261, P272, P280, P302+P352, P321, P333+P317, P362+P364, and P501 (click each P-code to see the statement)This chemical does not meet GHS hazard criteria for 7.7% (104 of 1358) of reports.DangerH226 (55%): Flammable liquid and vapor [Warning Flammable liquids] |
|---|---|
| Regulatorische Informationen | Chemical: Silane, ethenyltrimethoxy-Status: Active Update: 05-04-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/14728Trimethoxyvinylsilane: Does not have an individual approval but may be used under an appropriate group standard |
| Weitere Sicherheitsinformationen | Evaluation - Chemicals that are unlikely to require further regulation to manage risks to environment |
| Gefahrenübersicht | Dermal LD50 (rabbit) = 3.36 mL/kgOral LD50 (rat) = 7.34 mL/kg[ChemIDplus] A mild skin and eye irritantCauses somnolence, ataxia, and dermatitis in dermal lethal-dose studies of rabbitsCauses changes in fluid intake, hematuria, and weight loss in 9-day intermittent inhalation study of rats (750 ppm/6hr/day)[RTECS] Sensitive to moistureA skin irritantMay cause serious eye injuryHarmful by inhalation[Alfa Aesar MSDS] |
| Hazard Classes and Categories | Flam. Liq. 3 (55%)Not ClassifiedSkin sensitisation - category 1BFlammable liquids - Category 2Skin sensitization - Category 1BSkin Sens. 1B |
| Protective Action Criteria (PAC) | 10 [ppm]20 [ppm]120 [ppm] |
| Other Standards Regulations and Guidelines | The subchronic (14-week), whole-body inhalation study (6 h/day, 5 days/week) in F344 rats was used as the critical study for the derivation of the Workplace Environmental Exposure Level (WEEL). The No-Observed-Adverse-Effect Concentration (NOAEC) of 100 ppm (605 mg/m3) was used as the point of departure (PoD). Adjustment factors for subchronic to chronic extrapolation and intra-individual variability were applied to the NOAEC to develop the health-based WEEL value of 10 ppm as the 8-hour time-weighted average (TWA). |
| Toxizitätsübersicht | Experimental animal studies have shown that VTMS exhibits low acute toxicity when exposed via oral, dermal, and inhalation routes. It is not a dermal or eye irritant. A weight of evidence assessment of four dermal sensitization studies in guinea pigs indicates that VTMS is not a dermal sensitizer. However, one additional study yielded positive results, leading ECHA to classify VTMS as Category 1B, indicating it may cause an allergic skin reaction. VTMS is not considered genotoxic based on in vitro and in vivo studies. Various experimental animal studies have demonstrated that VTMS does not have reproductive or developmental effects. Short-term oral administration of VTMS for 28 days in rats resulted in treatment-related effects in the urinary bladder and kidney. In a 14-week inhalation study in rats, VTMS exposure was linked to histopathological changes in the kidney and urinary bladder. However, an expert panel review concluded that these observations were adaptive responses to physical or chemical irritant(s) in the urine. The NOAEC of 100 ppm (605 mg/m³) from the 14-week inhalation study was used as the point of departure for deriving the health-based WEEL. |
| Medical Surveillance | Three producers of VTMS provided information to confirm that there have been no cases of skin sensitization among workers during more than 40 years of manufacture. |
| Toxicity Data | LC50 (rat) = 2,773 ppm |
| F | 10-21 |
| Wassergefährdungsklasse (WGK) | 1 |
| TSCA-Inventar-Status | TSCA listed |
| UN-Transportnummer | UN 1993 3/PG 2 |
| Zollcode | 29310095 |
| RTECS-Nr. | VV6770000 |
| R-Sätze (R) | 10-36/37/38-20 |
| Toxizität | LD50 orally in Rabbit: 7120 mg/kg LD50 dermal Rabbit 3259 mg/kg |
| Gefahrensymbole | Xi |
| Sicherheitshinweise (S) | 26-36/37/39-37/39-16 |
| Gefahrenklasse | 3Acute Tox. 4 InhalationFlam. Liq. 2Skin Sens. 1B |
| Verpackungsgruppe | III |
| Lagerklasse | 3 - Flammable liquids |
| Selbstentzündungstemperatur | 235 °C |
Anwendungen & Verwendung
Verwenden
VTMS may be used to provide superhydrophobicity to different materials like TiO2, talc, kaolin, magnesium oxide nanoparticles, ammonium phosphate and PEDOT. It modifies the surface by capping the material and creates a protective layer that is water resistant and can be used in major coating industries.