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PARAFORMALDEHYDE POWDER EX LOKAL IMPORT

Rp. 123
Last Updated
21 Sep 2021
Minimum Order
1 Kilogram
Category
Kimia

Specification of PARAFORMALDEHYDE POWDER EX LOKAL IMPORT

Paraformaldehyde (PFA) is the smallest polyoxymethylene, formaldehyde polymerization product with a polymerization rate of 8-100 units. Paraformaldehyde usually has a slight formaldehyde odor due to decomposition. Paraformaldehyde is poly-acetal.


After the depolymerization of paraformaldehyde, the formaldehyde produced can be used as a fumigant, disinfectant, fungicide, and fixative. Polyoxymethylene with a longer chain length (high molecular weight) is used as a thermoplastic and is known as polyoxymethylene plastic (POM, Delrin). It was used in the past in Sargenti's discredited root canal treatment method. [2]




Paraformaldehyde is not a fixative; it must be depolymerized to formaldehyde in solution. In cell culture, a typical formaldehyde fixation procedure will involve using a 4% solution of formaldehyde in phosphate buffered saline (PBS) over ice for 10 minutes. In histological and pathological specimen preparation, the fixation stage is usually carried out using 10% Neutral Buffered Formalin (4% formaldehyde) for a minimum of 24 hours.




Paraformaldehyde is also used to cross-bind proteins to DNA, as is used in ChIP (chromatin immunoprecipitation) which is a technique for determining which part of DNA binds to a particular protein.




Paraformaldehyde can be used as a substitute for dilute formaldehyde to produce a resin binder, which is commonly used in conjunction with melamine, phenol or other reactive substances in the manufacture of particleboard, medium density fiberboard and plywood.




Paraformaldehyde can be used as a substitute for liquid formaldehyde to produce a resin binder, which is commonly used in conjunction with urea, melamine, phenol, resorcinol, tannins or other reagents in the manufacture of particleboard, fiberboard, and plywood.


special chemicals



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