8.14051

Hexamethyldisiloxane

for synthesis

• Sinonimo/i: Hexamethyldisiloxane, 2,2,4,4-Tetramethyl-3-oxa-2,4-disilapentane, HMDSO
• Formula condensata: ((CH₃)₃Si)₂O
• Numero CAS: 107-46-0
• Peso molecolare: 162.38
• Numero MDL: MFCD00008265
• Codice UNSPSC: 12352103
• Numero indice EU: 203-492-7
• NACRES: NA.22

Proprietà

• Tensione di vapore: 20 hPa ( 20 °C)
• Livello qualitativo: 200
• Saggio: ≥98.5% (GC)
• Stato: liquid
• Temp. autoaccensione: 340 °C
• Potenza: >12160 mg/kg LD₅₀, oral (Rat); >2000 mg/kg LD₅₀, skin (Rat)
• Limite di esplosione: 0.5-21.8 % (v/v)
• P. ebollizione: 100 °C/1013 hPa
• Punto di fusione: -68 °C
• Temp. transizione: flash point 4 °C
• Solubilità: insoluble 0.00037 g/L
• Densità: 0.76 g/cm³ at 25 °C
• Temperatura di conservazione: 2-30°C
• Stringa SMILE: [Si](O[Si](C)(C)C)(C)(C)C
• InChI: 1S/C6H18OSi2/c1-8(2,3)7-9(4,5)6/h1-6H3; UQEAIHBTYFGYIE-UHFFFAOYSA-N

Descrizione

Applicazioni

• 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).

Risultati analitici

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

Informazioni sulla sicurezza

• Pittogrammi: GHS02,GHS09
• Avvertenze: Danger
• Indicazioni di pericolo: H225 - H410
• Consigli di prudenza: P210 - P233 - P240 - P241 - P242 - P273
• Classi di pericolo: Aquatic Acute 1 - Aquatic Chronic 1 - Flam. Liq. 2
• Codice della classe di stoccaggio: 3 - Flammable liquids
• Classe di pericolosità dell'acqua (WGK): WGK 2
• Punto d’infiammabilità (°F): 21.2 °F - closed cup
• Punto d’infiammabilità (°C): -6 °C - closed cup