8.14051

Hexamethyldisiloxane

for synthesis

• Sinônimo(s): Hexamethyldisiloxane, 2,2,4,4-Tetramethyl-3-oxa-2,4-disilapentane, HMDSO
• Fórmula linear: ((CH₃)₃Si)₂O
• Número CAS: 107-46-0
• Peso molecular: 162.38
• Número MDL: MFCD00008265
• Código UNSPSC: 12352103
• Número do índice EC: 203-492-7
• NACRES: NA.22

Propriedades

• pressão de vapor: 20 hPa ( 20 °C)
• Nível de qualidade: 200
• Ensaio: ≥98.5% (GC)
• Formulário: liquid
• temperatura de autoignição: 340 °C
• potência: >12160 mg/kg LD₅₀, oral (Rat); >2000 mg/kg LD₅₀, skin (Rat)
• Lim. expl.: 0.5-21.8 % (v/v)
• p.e.: 100 °C/1013 hPa
• pf: -68 °C
• temperatura de transição: flash point 4 °C
• solubilidade: insoluble 0.00037 g/L
• densidade: 0.76 g/cm³ at 25 °C
• temperatura de armazenamento: 2-30°C
• cadeia de caracteres SMILES: [Si](O[Si](C)(C)C)(C)(C)C
• InChI: 1S/C6H18OSi2/c1-8(2,3)7-9(4,5)6/h1-6H3
• chave InChI: UQEAIHBTYFGYIE-UHFFFAOYSA-N

Descrição

Aplicação

• Hexamethyldisiloxane coating by plasma to create a superhydrophobic surface for fabric masks: Research into the application of HMDSO plasma coatings to fabric masks to impart superhydrophobic properties, enhancing their resistance to moisture (Prado et al., 2022).
• PECVD of hexamethyldisiloxane coatings using extremely asymmetric capacitive RF discharge: Examines the deposition of HMDSO-based coatings via plasma-enhanced chemical vapor deposition, focusing on the influence of discharge asymmetry on the coating properties (Gosar et al., 2020).
• A ReaxFF-based molecular dynamics study of the pyrolysis mechanism of hexamethyldisiloxane: This study uses molecular dynamics to explore the pyrolysis processes of HMDSO, important for understanding its stability and decomposition under thermal stress (Chen et al., 2022).
• Thermal stability of hexamethyldisiloxane and octamethyltrisiloxane: Discusses the thermal stability of HMDSO compared to related siloxanes, providing valuable data for applications involving heat exposure (Keulen et al., 2018).

Nota de análise

Assay (GC, area%): ≥ 98.5 % (a/a)
Density (d 20 °C/ 4 °C): 0.762 - 0.764
Identity (IR): passes test

Informações de segurança

• Pictogramas: GHS02,GHS09
• Palavra indicadora: Danger
• Frases de perigo: H225 - H410
• Declarações de precaução: P210 - P233 - P240 - P241 - P242 - P273
• Classificações de perigo: Aquatic Acute 1 - Aquatic Chronic 1 - Flam. Liq. 2
• Código de classe de armazenamento: 3 - Flammable liquids
• Classe de risco de água (WGK): WGK 2
• Ponto de fulgor (°F): 21.2 °F - closed cup
• Ponto de fulgor (°C): -6 °C - closed cup