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 odour. Avoid strong oxidising 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 | 0 in stock (?) | AU $167.00 | |||
| C007-1KG | Paraformaldehyde, prill (DG) | 1000g | 0 in stock (?) | AU $224.00 | |||
| C0072-1000 | Paraformaldehyde, granular, EM grade (DG) | 1000g | 0 in stock (?) | AU $224.00 | |||
| C0072-500 | Paraformaldehyde, granular, EM grade (DG) | 500g | 0 in stock (?) | AU $166.00 | |||
| EMS15949-50 | Glutaraldehyde and paraformaldehyde, 0.1M sodium cacodylate buffered | 0.35%/3% | 10 x 10ml | 0 in stock (?) | AU $124.00 | ||
| EMS15949-60 | Glutaraldehyde and paraformaldehyde, 0.1M sodium cacodylate buffered | 0.35%/3% | 500ml | 0 in stock (?) | AU $261.00 | ||
| EMS15960-01 | Glutaraldehyde and paraformaldehyde, 0.1M sodium cacodylate buffered | 2.5%/2% | 10 x 10ml | 0 in stock (?) | AU $90.00 | ||
| C0091-1010 | Glutaraldehyde and paraformaldehyde, 0.1M phosphate buffered | 1%/4% | 10 x 10ml | 0 in stock (?) | AU $126.00 | ||
| C0091-500 | Glutaraldehyde and paraformaldehyde, 0.1M phosphate buffered | 1%/4% | 500ml | 0 in stock (?) | AU $260.00 | ||
| C0092-1010 | Glutaraldehyde and paraformaldehyde, 0.1M phosphate buffered | 2%/1% | 10 x 10ml | 0 in stock (?) | AU $113.00 | ||
| C0092-500 | Glutaraldehyde and paraformaldehyde, 0.1M phosphate buffered | 2%/1% | 500ml | 0 in stock (?) | AU $245.00 | ||
| C0093-1010 | Glutaraldehyde and paraformaldehyde, 0.1M phosphate buffered | 2%/2% | 10 x 10ml | 0 in stock (?) | AU $110.00 | ||
| C0093-500 | Glutaraldehyde and paraformaldehyde, 0.1M phosphate buffered | 2%/2% | 500ml | 0 in stock (?) | AU $336.00 | ||
| C0093-1000 | Glutaraldehyde and paraformaldehyde, 0.1M phosphate buffered | 2%/2% | 1L | 0 in stock (?) | AU $572.00 | ||
| C0094-1010 | Glutaraldehyde and paraformaldehyde, 0.1M phosphate buffered | 2.5%/1% | 10 x 10ml | 0 in stock (?) | AU $109.00 | ||
| C0094-500 | Glutaraldehyde and paraformaldehyde, 0.1M phosphate buffered | 2.5%/1% | 500ml | 0 in stock (?) | AU $333.00 | ||
| C0094-1000 | Glutaraldehyde and paraformaldehyde, 0.1M phosphate buffered | 2.5%/1% | 1L | 0 in stock (?) | AU $570.00 | ||
| C0095-1010 | Glutaraldehyde and paraformaldehyde, 0.1M phosphate buffered | 3%/3% | 10 x 10ml | 0 in stock (?) | AU $91.00 | ||
| C0095-500 | Glutaraldehyde and paraformaldehyde, 0.1M phosphate buffered | 3%/3% | 500ml | 0 in stock (?) | AU $174.00 | ||
| C0095-1000 | Glutaraldehyde and paraformaldehyde, 0.1M phosphate buffered | 3%/3% | 1L | 0 in stock (?) | AU $257.00 | ||
| C00549-1010 | Paraformaldehyde 4%, 0.1M sodium cacodylate buffer | 10 x 10ml | 0 in stock (?) | AU $127.00 | |||
| C00549-500 | Paraformaldehyde 4%, 0.1M sodium cacodylate buffer | 500ml | 0 in stock (?) | AU $284.00 | |||
| C005 | Formaldehyde (paraformaldehyde) 4% aqueous solution | 10 x 10ml | 3 in stock | AU $84.00 | |||
| C005-100 | Formaldehyde (paraformaldehyde) 4% aqueous solution | 100ml | 1 in stock | AU $71.00 | |||
| C005-1L | Formaldehyde (paraformaldehyde) 4% aqueous solution | 1L | 0 in stock (?) | AU $450.00 | |||
| C006 | Formaldehyde (paraformaldehyde) 8% aqueous solution | 10 x 10ml | 3 in stock | AU $80.00 | |||
| C006-100 | Formaldehyde (paraformaldehyde) 8% aqueous solution | 100ml | 3 in stock | AU $72.00 | |||
| C00401-10x10 | Paraformaldehyde 0.5%, 0.1M phosphate buffered | 10 x 10ml | 0 in stock (?) | AU $81.00 | |||
| C00401-500 | Paraformaldehyde 0.5%, 0.1M phosphate buffered | 500ml | 0 in stock (?) | AU $231.00 | |||
| C00548-1010 | Paraformaldehyde 4%, 0.2M phosphate buffered saline | 10 x 10ml | 0 in stock (?) | AU $114.00 | |||
| C00548-500 | Paraformaldehyde 4%, 0.2M phosphate buffered saline | 500ml | 0 in stock (?) | AU $262.00 | |||
| C00545-1010 | Paraformaldehyde 4%, 0.2M phosphate buffered | pH 7.2 | 10 x 10ml | 0 in stock (?) | AU $109.00 | ||
| C00545-500 | Paraformaldehyde 4%, 0.2M phosphate buffered | pH 7.2 | 500ml | 0 in stock (?) | AU $243.00 | ||
| C00546-1010 | Paraformaldehyde 4%, 0.2M phosphate buffered | pH 7.4 | 10 x 10ml | 0 in stock (?) | AU $100.00 | ||
| C00546-500 | Paraformaldehyde 4%, 0.2M phosphate buffered | pH 7.4 | 500ml | 0 in stock (?) | AU $244.00 | ||
| C00541-1010 | Paraformaldehyde 1%, 0.1M phosphate buffered | pH 7.4 | 10 x 10ml | 0 in stock (?) | AU $114.00 | ||
| C00541-500 | Paraformaldehyde 1%, 0.1M phosphate buffered | pH 7.4 | 500ml | 0 in stock (?) | AU $244.00 | ||
| C00540-1010 | Paraformaldehyde 0.5%, 0.1M phosphate buffered | pH 7.4 | 10 x 10ml | 0 in stock (?) | AU $106.00 | ||
| C00540-500 | Paraformaldehyde 0.5%, 0.1M phosphate buffered | pH 7.4 | 500ml | 0 in stock (?) | AU $244.00 | ||
| C00540-1000 | Paraformaldehyde 0.5%, 0.1M phosphate buffered | pH 7.4 | 1L | 0 in stock (?) | AU $356.00 | ||
| C00540-3785 | Paraformaldehyde 0.5%, 0.1M phosphate buffered | pH 7.4 | 3785ml | 0 in stock (?) | AU $845.00 | ||
| C0042-1010 | Formaldehyde (paraformaldehyde) 20% aqueous solution | 10 x 10ml | 1 in stock | AU $100.00 | |||
| C0042B | Formaldehyde (paraformaldehyde) 20% aqueous solution (DG) | 100ml | 7 in stock | AU $96.00 | |||
| C004 | Formaldehyde (paraformaldehyde) 16% aqueous solution (DG) | 10 x 10ml | 10+ in Stock | AU $112.00 | |||
| C004-100 | Formaldehyde (paraformaldehyde) 16% aqueous solution (DG) | 100ml | 10+ in Stock | AU $117.00 | |||
| C004-1L | Formaldehyde (paraformaldehyde) 16% aqueous solution (DG) | 1L | 0 in stock (?) | AU $654.00 | |||
| C00542-1010 | Paraformaldehyde 4%, 0.1M phosphate buffered | pH 7.2 | 10 x 10ml | 0 in stock (?) | AU $113.00 | ||
| C00542-500 | Paraformaldehyde 4%, 0.1M phosphate buffered | pH 7.2 | 500ml | 0 in stock (?) | AU $246.00 | ||
| C00543-1010 | Paraformaldehyde 4%, 0.1M phosphate buffered | pH 7.4 | 10 x 10ml | 0 in stock (?) | AU $121.00 | ||
| C00543-500 | Paraformaldehyde 4%, 0.1M phosphate buffered | pH 7.4 | 500ml | 0 in stock (?) | AU $246.00 | ||
| C00547-1010 | Paraformaldehyde 4%, 0.1M phosphate buffered saline | pH 7.4 | 10 x 10ml | 0 in stock (?) | AU $113.00 | ||
| C00547-500 | Paraformaldehyde 4%, 0.1M phosphate buffered saline | pH 7.4 | 500ml | 0 in stock (?) | AU $248.00 | ||
| C0041-100 | Formaldehyde (paraformaldehyde) 10% aqueous solution (DG) | 100ml | 0 in stock (?) | AU $84.00 | |||
| C0041-1010 | Formaldehyde (paraformaldehyde) 10% aqueous solution (DG) | 10 x 10ml | 0 in stock (?) | AU $90.00 | |||
| C00432-1010 | Formaldehyde (paraformaldehyde) 32% aqueous solution (DG) | 10 x 10ml | 2 in stock | AU $107.00 | |||
| C00432-100 | Formaldehyde (paraformaldehyde) 32% aqueous solution (DG) | 100ml | 1 in stock | AU $156.00 | |||
| C00432-1L | Formaldehyde (paraformaldehyde) 32% aqueous solution (DG) | 1L | 0 in stock (?) | AU $780.00 |