VM-20 Vinyl ring body [CAS No.:2554-06-5]
Details
VM-20 Vinyl ring body [CAS No.: 2554-06-5]
Chemical Name: Tetramethyl vinyl ring four siloxane
Abbreviations: VMC methyl vinyl Cyclosiloxane, vinyl tetracyclic body (available pure vinyl three-ring body)
English name: Tetravinyl tetramethyl cyclo tetrasiloxane
Molecular formula: [CH3(CH2=CH)SiO]4
Molecular weight: 344.66
Structure:
(-Vi=-CH=CH2) (-Me=-CH3)
Physical properties: colorless, transparent liquid Refractive index: 1.4342, boiling point of 224-224.5 °C, density: 0.9875g/ml
Quality standard:
Purity ≥ 99%,
the vinyl content ≥ 29.5% (detailed index see figure below):
(Note: The pure "vinyl three-ring body", purity ≥ 99%; or "trimethyl three vinyl cyclotrisiloxane ")
Central, methyl vinyl siloxane (referred to as: vinyl ring body or of VMC; Grade: VM-20) a variety of specifications and quality indicators：
Item | Qualified product (Cape Central) | D grade product | C grade product | B grade product | A grade products |
Appearance | Colorless transparent liquid | Colorless transparent liquid | Colorless transparent liquid | Colorless transparent liquid | Colorless transparent liquid |
Purity | ≥98.0% | ≥98.0% | ≥99.0% | ≥99.0% | ≥99.0% |
Content of vinyl (Vi) | ≥29.3% | ≥29.5% | ≥29.8% | ≥30.0% | ≥30.3% |
The tricyclic physical content of (V3) | ＜0.50% | ＜0.30% | ＜0.30% | ＜0.25% | ＜0.20% |
Content of tetracyclic body (V4) | ≥70.0% | ≥80.0% | ≥90.0% | ≥95.0% | ≥99.0% |
The Ethyl content (vice peak) followed by V4 | ＜0.80% | ＜0.70% | ＜0.65% | ＜0.60% | ＜0.60% |
Uses: mainly used for high vinyl silicone oil, silicone rubber, one of the basic raw material of liquid silicone, high vinyl silicone rubber, vinyl, hydroxyl silicone oil additives in the production process (intermediate), but also the synthesis of a variety of silicone rubber.
Packing: 25kg plastic pail containers, metal pail or plastic barrel fitted 200kg; can also be packaged according to customer requirements.
