Paraformaldehyde, prills, EM Grade for electron microscopy, purified

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100504-158EA 56.79 USD
100504-158 100504-156
Paraformaldehyde, prills, EM Grade for electron microscopy, purified
Paraformaldehyde

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.
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).

Formula: (CH₂O)n
Melting Pt: 120 °C (248 °F)
Density: 1.46 g/cm³ (12.1837 lbs/gal.)
Flash Pt: 70
MDL Number: MFCD00133991
CAS Number: 30525-89-4
UN: 2213
ADR: 4.1 III
Merck Index: 13,07096
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