SILICONE GREASE

pkg of 100 g

Product Number: 85410-1EA Description: SILICONE GREASE, TUBE WITH 100 G
	Foreign Trade Commodity Code: 39100000900 CAS Number: 0000000000

Silicone grease is a waterproof grease made by combining a silicone oil with a thickener. Most commonly, the silicone oil is polydimethylsiloxane (PDMS) and the thickener is amorphous fumed silica. Using this formulation, silicone grease is a translucent white viscous paste, with exact properties dependent on the type and proportion of the components.

Detailed description

 More specialized silicone greases are made from fluorinated silicones or, for low temperature applications, PDMS containing some phenyl substituents in place of methyl groups. For food applications, the thickener is calcium stearate. For applications involving highly reactive substances, powdered Teflon is the thickener.

Use in industry

Silicone grease is commonly used for lubricating and preserving rubber parts, such as O-rings. Additionally, silicone grease does not swell or soften the rubber, which can be a problem with hydrocarbon based greases. It functions well as a corrosion-inhibitor and lubricant for purposes that require a thicker lubricant.

Thermal grease often consists of a silicone grease base, along with added thermally conductive fillers. It is used for heat transfer abilities, rather than friction reduction.

Special versions of silicone grease are also used widely by the plumbing industry in faucets and seals, as well as dental equipment. These special versions are formulated using components not known to be an ingestion hazard. Electrical utilities use silicone grease to lubricate separable elbows on lines which must endure high temperatures. Silicone greases generally have an operating temperature range of approximately −40 to 200 °C (−40 to 392 °F) with some high-temperature versions extending that range slightly.

Use in the chemical laboratory

Silicone grease is widely used as a temporary sealant and a lubricant for interconnecting ground glass joints, as is typically used in laboratory glassware. Although silicones are normally assumed to be chemically inert, several historically significant compounds have resulted from unintended reactions with silicones.^[2][3] The first salts of crown ethers (OSi(CH₃)₂)_n (n = 6, 7) were produced by reactions of organolithium and organopotassium compounds with silicone greases^[4] or the serendipitous reaction of stannanetriol with silicone grease to afford a cage-like compound having three Sn-O-Si-O-Sn linkages in the molecule.^[5]

Silicone grease is soluble in organic solvents, and lubrication of an apparatus with silicone grease may result in the reaction mixture being contaminated with the grease. The impurity may be carried through purification by chromatography in undesirable amounts. In NMR spectroscopy, the methyl groups in polydimethylsiloxane display ¹H and ¹³C chemical shifts similar to trimethylsilane (TMS), the reference compound for those forms of NMR spectroscopy. As with TMS, the signal is a singlet. In ¹H NMR, silicone grease appears at a singlet at δ = 0.07 ppm in CDCl₃, 0.09 in CD₃CN, 0.29 in C₆D₆, and -0.06 ppm in (CD₃)₂SO. In ¹³C NMR, it appears at δ = 1.19 ppm in CDCl₃ and 1.38 ppm in C₆D₆. Tables of impurities commonly found in NMR spectroscopy have been prepared, and such tables include silicone grease.^[6]

Consumer uses

Silicone-based lubricants are often used by consumers in applications where other common consumer lubricants, such as petroleum jelly, would damage certain products, such as latex rubber condoms and gaskets on dry-suits. It can be used to lubricate fountain pen filling mechanisms and threads. It is used to seal and preserve O-rings in flashlights, plumbing, waterproof watches, and air rifles. Silicone grease is widely used to lubricate threads of water submersible flashlights used for diving and spearfishing. This grease improves water resistance of the flashlights and protects threads from wearing out. Silicone grease is used with waterproof devices as it has a very thick body and doesn't dissolve in water, as most spirits and other liquids would. Silicone-based lubricants are also commonly used for remote control hobbies, or for the insulation of CPU sockets when overclocking at very low temperatures.

Various household uses include lubricating door hinges, shower heads, threads on bolts, garden hose threads or any thread or mechanism that can be lubricated.

As a sealant around electrical contacts

Packaging details

pkg of 100 g

PRICE

$865.52/KG OR $393.41/IB

For more information:

mobile: +2348039721941

contact person: emeaba uche

e-mail: emeabau@yahoo.com

website: www.franchiseminerals.com