Silicone rubber solvent cleaning

Previous reports 13] emphasized the importance of sample handling, and indeed because of the very volatile nature of the compounds measured in this type of analysis, sample collection deserves special consideration. In general, narrow mouth glass vials with a total volume in excess of 50 ml are acceptable. The bottles need not be rinsed or cleaned with organic solvents, but simply cleaned with detergent and water, rinsed with distilled water, air dried, and dried in a 105°C oven for one hour. The vials are carefully filled with sample to overflowing (zero head space) and a Teflon faced silicone rubber septum is placed Teflon face down on the water sample surface. The septa may be cleaned in the same manner as the vials, but should not be heated more than one hour because the silicone layer slowly degrades at 105°C. 

Vertrel XSi Is a proprietary blend of Vertrel XF hydrofluorocarbon and hexamethyidislloxane. It is ideally suited for use in medical applications as a solvent for cleaning or depositing of silicone oil-based lubricants. It is also used as a swelling media for silicone rubber tubing. 

Chloromethanes (silicon rubbers, decaffeinators, Tefion, paint strippers, cosmetics) Solvents (metal degreasing, adhesives, dry cleaning plastics)... 

Uses Pesticide intermediate mfg. of phenol, chloronitrobenzene, aniline, DDT, silicone resins, dyes, perfumes, polysulfone solvent carrier for methylene diisocyanate solvent for paints, pesticides, degreasing processes, pharmaceuticals heat transfer medium adhesive rubbers and adhesives primer or adhesive additive for adhering elastomeric coatings to syn. fiber fabrics coated with syn. rubber surf, coating dry cleaning intermediate for halogen synthesis in food-pkg. adhesives adjuvant for PC food-pkg. resins solvent in food-contact polysulfone rGsins... 

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