Buy factory price Paraformaldehyde/ CAS NO. 30525-89-4 wholesale.

 

Buy Paraformaldehyde (PFA) CAS-30525-89-4. Buy factory price Paraformaldehyde/ CAS NO. 30525-89-4 wholesale. Buy Paraformaldehyde (PFA) CAS-30525-89-4. Paraformaldehyde (PFA) is the smallest polyoxymethylene, the polymerization product of formaldehyde with a typical degree of polymerization of 8–100 units. Paraformaldehyde commonly has a slight odor of formaldehyde due to decomposition. Paraformaldehyde is a poly-acetal Buy Paraformaldehyde (PFA) CAS-30525-89-4

Synthesis of Paraformaldehyde (PFA) CAS-30525-89-4

Paraformaldehyde forms slowly in aqueous formaldehyde solutions as a white precipitate, especially if stored in the cold. Formalin actually contains very little monomeric formaldehyde; most of it forms short chains of polyformaldehyde. A small amount of methanol is often added as a stabilizer to limit the extent of polymerization.

Reactions of Paraformaldehyde (PFA) CAS-30525-89-4

Paraformaldehyde can be depolymerized to formaldehyde gas by dry heating and to formaldehyde solution by water in the presence of a base, an acid or heat. The high purity formaldehyde solutions obtained in this way are used as a fixative for microscopy and histology.The resulting formaldehyde gas from dry heating paraformaldehyde is flammable. Buy Paraformaldehyde (PFA) CAS-30525-89-4

Uses of Paraformaldehyde (PFA) CAS-30525-89-4

Once paraformaldehyde is depolymerized, the resulting formaldehyde may be used as a fumigant, disinfectant, fungicide, and fixative. Longer chain-length (high molecular weight) polyoxymethylenes are used as a thermoplastic and are known as polyoxymethylene plastic (POM, Delrin). It was used in the past in the discredited Sargenti method of root canal treatment. Buy Paraformaldehyde (PFA) CAS-30525-89-4

Paraformaldehyde is not a fixative; it must be depolymerized to formaldehyde in solution. In cell culture, a typical formaldehyde fixing procedure would involve using a 4% formaldehyde solution in phosphate buffered saline (PBS) on ice for 10 minutes. In histology and pathology specimens preparation, usually, the fixation step is performed using 10% Neutral Buffered Formalin (4% formaldehyde) for, at least, 24 hours. Buy Paraformaldehyde (PFA) CAS-30525-89-4

Paraformaldehyde is also used to crosslink proteins to DNA, as used in ChIP (chromatin immunoprecipitation) which is a technique to determine which part of DNA certain proteins are binding to. Buy Paraformaldehyde (PFA) CAS-30525-89-4

Paraformaldehyde can be used as a substitute of aqueous formaldehyde to produce the resinous binding material, which is commonly used together with melamine, phenol or other reactive agents in the manufacturing of particle board, medium density fiberboard and plywood. Buy Paraformaldehyde (PFA) CAS-30525-89-4

 

• ProName: Paraformaldehyde CAS NO:30525-89-4
• CasNo: 30525-89-4
• Molecular Formula: C3H6O3X2
• Appearance: white powder
• Application: intermediates
• DeliveryTime: within 7days after payment
• PackAge: according to customer’s requirement
• Port: shanghai
• ProductionCapacity: 500 Kilogram/Week
• Purity: 98%
• Storage: Store in dry, dark and ventilated place
• Transportation: by air or sea
• LimitNum: 10 Gram
• Moisture Content: 0.01
• Impurity: 0.01
• limitnum: 10gram