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 | 1 in stock | AU $129.00 | |||
| C007-1KG | Paraformaldehyde, prill (DG) | 1000g | 0 in stock (?) | AU $223.00 | |||
| EMS19208 | Paraformaldehyde, granular (DG) EM grade | 500g | 0 in stock (?) | AU $125.00 | |||
| EMS19210 | Paraformaldehyde, granular (DG) EM grade | 1000g | 0 in stock (?) | AU $215.00 | |||
| EMS15949-50 | Glutaraldehyde and paraformaldehyde, 0.1M sodium cacodylate buffered | 0.35%/3% | 10 x 10ml | 0 in stock (?) | AU $112.00 | ||
| EMS15949-60 | Glutaraldehyde and paraformaldehyde, 0.1M sodium cacodylate buffered | 0.35%/3% | 500ml | 0 in stock (?) | AU $239.00 | ||
| EMS15960-01 | Glutaraldehyde and paraformaldehyde, 0.1M sodium cacodylate buffered | 2.5%/2% | 10 x 10ml | 0 in stock (?) | AU $79.00 | ||
| EMS15949-70 | Glutaraldehyde and paraformaldehyde, 0.1M phosphate buffered | 1%/4% | 10 x 10ml | 0 in stock (?) | AU $117.00 | ||
| EMS15949-80 | Glutaraldehyde and paraformaldehyde, 0.1M phosphate buffered | 1%/4% | 500ml | 0 in stock (?) | AU $239.00 | ||
| EMS15949-30 | Glutaraldehyde and paraformaldehyde, 0.1M phosphate buffered | 2%/1% | 10 x 10ml | 0 in stock (?) | AU $105.00 | ||
| EMS15949-35 | Glutaraldehyde and paraformaldehyde, 0.1M phosphate buffered | 2%/1% | 500ml | 0 in stock (?) | AU $230.00 | ||
| EMS16536-06 | Glutaraldehyde and paraformaldehyde, 0.1M phosphate buffered | 2%/2% | 10 x 10ml | 0 in stock (?) | AU $103.00 | ||
| EMS16536-07 | Glutaraldehyde and paraformaldehyde, 0.1M phosphate buffered | 2%/2% | 500ml | 0 in stock (?) | AU $309.00 | ||
| EMS16536-08 | Glutaraldehyde and paraformaldehyde, 0.1M phosphate buffered | 2%/2% | 1L | 0 in stock (?) | AU $543.00 | ||
| EMS16537-06 | Glutaraldehyde and paraformaldehyde, 0.1M phosphate buffered | 2.5%/1% | 10 x 10ml | 0 in stock (?) | AU $101.00 | ||
| EMS16537-07 | Glutaraldehyde and paraformaldehyde, 0.1M phosphate buffered | 2.5%/1% | 500ml | 0 in stock (?) | AU $308.00 | ||
| EMS16537-08 | Glutaraldehyde and paraformaldehyde, 0.1M phosphate buffered | 2.5%/1% | 1L | 0 in stock (?) | AU $541.00 | ||
| EMS16538-06 | Glutaraldehyde and paraformaldehyde, 0.1M phosphate buffered | 3%/3% | 10 x 10ml | 0 in stock (?) | AU $82.00 | ||
| EMS16538-07 | Glutaraldehyde and paraformaldehyde, 0.1M phosphate buffered | 3%/3% | 500ml | 0 in stock (?) | AU $160.00 | ||
| EMS16538-08 | Glutaraldehyde and paraformaldehyde, 0.1M phosphate buffered | 3%/3% | 1L | 0 in stock (?) | AU $236.00 | ||
| EMS15952-10S | Paraformaldehyde 4%, 0.1M sodium cacodylate buffer | 10 x 10ml | 0 in stock (?) | AU $116.00 | |||
| EMS15952-15S | Paraformaldehyde 4%, 0.1M sodium cacodylate buffer | 500ml | 0 in stock (?) | AU $263.00 | |||
| C005 | Formaldehyde (paraformaldehyde) 4% aqueous solution | 10 x 10ml | 0 in stock (?) | AU $76.00 | |||
| C005-100 | Formaldehyde (paraformaldehyde) 4% aqueous solution | 100ml | 10+ in Stock | AU $69.00 | |||
| C005-1L | Formaldehyde (paraformaldehyde) 4% aqueous solution | 1L | 0 in stock (?) | AU $435.00 | |||
| C006 | Formaldehyde (paraformaldehyde) 8% aqueous solution | 10 x 10ml | 2 in stock | AU $75.00 | |||
| C006-100 | Formaldehyde (paraformaldehyde) 8% aqueous solution | 100ml | 0 in stock (?) | AU $67.00 | |||
| EMS15953-10 | Paraformaldehyde 0.5%, 0.1M phosphate buffered | 10 x 10ml | 0 in stock (?) | AU $72.00 | |||
| EMS15953-15 | Paraformaldehyde 0.5%, 0.1M phosphate buffered | 500ml | 0 in stock (?) | AU $210.00 | |||
| EMS15712 | Formaldehyde (paraformaldehyde) 10% aqueous solution (DG) | 10 x 10ml | 3 in stock | AU $82.00 | |||
| EMS15712-S | Formaldehyde (paraformaldehyde) 10% aqueous solution (DG) | 100ml | 0 in stock (?) | AU $75.00 | |||
| EMS15735-95 | Paraformaldehyde 4%, 0.2M phosphate buffered saline | 10 x 10ml | 0 in stock (?) | AU $108.00 | |||
| EMS15735-100 | Paraformaldehyde 4%, 0.2M phosphate buffered saline | 500ml | 0 in stock (?) | AU $241.00 | |||
| EMS15735-50S | Paraformaldehyde 4%, 0.1M phosphate buffered | pH 7.2 | 10 x 10ml | 0 in stock (?) | AU $106.00 | ||
| EMS15735-60S | Paraformaldehyde 4%, 0.1M phosphate buffered | pH 7.2 | 500ml | 0 in stock (?) | AU $234.00 | ||
| EMS15735-85 | Paraformaldehyde 4%, 0.1M phosphate buffered | pH 7.4 | 10 x 10ml | 1 in stock | AU $111.00 | ||
| EMS15735-90 | Paraformaldehyde 4%, 0.1M phosphate buffered | pH 7.4 | 500ml | 0 in stock (?) | AU $238.00 | ||
| EMS15735-70 | Paraformaldehyde 4%, 0.2M phosphate buffered | pH 7.2 | 10 x 10ml | 0 in stock (?) | AU $105.00 | ||
| EMS15735-30S | Paraformaldehyde 4%, 0.2M phosphate buffered | pH 7.4 | 10 x 10ml | 0 in stock (?) | AU $93.00 | ||
| EMS15735-80 | Paraformaldehyde 4%, 0.2M phosphate buffered | pH 7.2 | 500ml | 0 in stock (?) | AU $233.00 | ||
| EMS15735-40S | Paraformaldehyde 4%, 0.2M phosphate buffered | pH 7.4 | 500ml | 0 in stock (?) | AU $230.00 | ||
| EMS15952-10 | Paraformaldehyde 1%, 0.1M phosphate buffered | pH 7.4 | 10 x 10ml | 0 in stock (?) | AU $103.00 | ||
| EMS15952-15 | Paraformaldehyde 1%, 0.1M phosphate buffered | pH 7.4 | 500ml | 0 in stock (?) | AU $224.00 | ||
| EMS15735-10S | Paraformaldehyde 4%, 0.1M phosphate buffered | pH 7.4 | 10 x 10ml | 0 in stock (?) | AU $103.00 | ||
| EMS15735-20S | Paraformaldehyde 4%, 0.1M phosphate buffered | pH 7.4 | 500ml | 0 in stock (?) | AU $233.00 | ||
| EMS15951-10 | Paraformaldehyde 0.5%, 0.1M phosphate buffered | pH 7.4 | 10 x 10ml | 0 in stock (?) | AU $99.00 | ||
| EMS15951-15 | Paraformaldehyde 0.5%, 0.1M phosphate buffered | pH 7.4 | 500ml | 0 in stock (?) | AU $224.00 | ||
| EMS15951-15-1L | Paraformaldehyde 0.5%, 0.1M phosphate buffered | pH 7.4 | 1L | 0 in stock (?) | AU $326.00 | ||
| EMS15951-15-1G | Paraformaldehyde 0.5%, 0.1M phosphate buffered | pH 7.4 | 3785ml | 0 in stock (?) | AU $829.00 | ||
| C0042-1010 | Formaldehyde (paraformaldehyde) 20% aqueous solution | 10 x 10ml | 0 in stock (?) | AU $85.00 | |||
| C0042B | Formaldehyde (paraformaldehyde) 20% aqueous solution (DG) | 100ml | 10+ in Stock | AU $94.00 | |||
| C00432-1010 | Formaldehyde (paraformaldehyde) 32% aqueous solution (DG) | 10 x 10ml | 1 in stock | AU $100.00 | |||
| C00432-100 | Formaldehyde (paraformaldehyde) 32% aqueous solution (DG) | 100ml | 2 in stock | AU $106.00 | |||
| C00432-1L | Formaldehyde (paraformaldehyde) 32% aqueous solution (DG) | 1L | 0 in stock (?) | AU $696.00 | |||
| C004 | Formaldehyde (paraformaldehyde) 16% aqueous solution (DG) | 10 x 10ml | 10+ in Stock | AU $92.00 | |||
| C004-100 | Formaldehyde (paraformaldehyde) 16% aqueous solution (DG) | 100ml | 0 in stock (?) | AU $85.00 | |||
| C004-1L | Formaldehyde (paraformaldehyde) 16% aqueous solution (DG) | 1L | 10 in stock | AU $571.00 |