CHEM Paraformaldehyde
(Polyoxymethylene)
OH(CH2O)n H  F.W. ~ 600  CAS #30525-89-4
Fixative. White free-flowing solid pellet (prill) with strong, pungent formaldehyde odor. Avoid strong oxidizing agents, temperatures above 38°C
Paraformaldehyde is the condensation product of methylene glycol, a substance not so far isolated in its pure form; it is a white solid with a formaldehyde content between 78 and 98% and is supplied either as a Prill or Granular. All forms contain more than 95.5% paraformaldehyde content. The Prill and Granular forms are small, free-flowing, dust-free beads, the most desired by EM users.
Polyoxymethylene (paraformaldehyde) is a powder of polymerised formaldehyde that by itself cannot fix tissues. A fast-penetrating EM fixative used in combination with Glutaraldehyde, Acrolein, and Osmium Tetroxide. Karnovsky, M.J., J. Cell Biol., 27, 137A (1965). Hayat, M.A. Principles & Tech., of EM (Univ. Park Press), 68 (1981).
Code | Title | Option 1 | Option 2 | Option 3 | Availability* | Price | |
---|---|---|---|---|---|---|---|
C007 | Paraformaldehyde, prill (DG) | 500g | leadtime:4-6 weeks | AU $122.00 | |||
C007-1KG | Paraformaldehyde, prill (DG) | 1000g | leadtime:4-6 weeks | AU $212.00 | |||
EMS19208 | Paraformaldehyde, granular (DG) EM grade | 500g | leadtime:4-6 weeks | AU $127.00 | |||
EMS19210 | Paraformaldehyde, granular (DG) EM grade | 1000g | leadtime:4-6 weeks | AU $206.00 |