Angene

 
Angene si impegna a fornire prodotti chimici di qualità da utilizzare nella ricerca e sviluppo e nella produzione commerciale. Angene offre oltre 100.000 prodotti tra cui reagenti di laboratorio, building blocks, intermedi, prodotti sfusi, prodotti agrochimici, ingredienti naturali e principi attivi farmaceutici (API). Oltre agli oltre 100.000 prodotti, Angene offre sintesi personalizzate di sostanze chimiche non disponibili in commercio.

 

 
 
 
Formaldehyde for histology

Formaldehyde for histology


Formaldehyde (CH2O) is the only gaseous aldehyde. It is dissolved in water with a saturation of 37 to 40%. This solution is generally referred to as "formaldehyde" or "formaldehyde solution". For this purpose, this concentrated solution is used by diluting it with water or buffer (usually 1/10), then 10% formalin solution, which in fact contains 4% formaldehyde, an ideal concentration for fixing. It is also possible to use paraformaldehyde which is in the form of a powder, this compound being the highly polymerized form of formaldehyde. Paraformaldehyde makes it possible to prepare very pure solutions of formaldehyde and is particularly recommended for electron microscopy.

Formaldehyde is a fast-penetrating, slow-fixing fixative that is best suited for large pieces of tissue. Formaldehyde is a chemical fixative that reacts with side chains of proteins to form hydroxymethyl groups. The effects of formaldehyde are reversible by excess water.

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