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paraformaldehyde

Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A white solid polymer of formaldehyde, (HCHO)n, where n is at least 6, used as a disinfectant, fumigant, and fungicide.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A solid oligomer of formaldehyde that is used as a fumigant, and as a fixative in histology

from the GNU version of the Collaborative International Dictionary of English

  • n. A polymer of formaldehyde obtained as a white crystalline substance by concentration of a formaldehyde solution. Formula (CH20)n. It dissolves in hot water with the release of formaldehyde, and is used as a disinfectant.

from The Century Dictionary and Cyclopedia

  • n. A polymerized formaldehyde, (CH2O)n + H2O, formed by evaporation of an aqueous solution of formaldehyde. It is an amorphous solid that dissolves gradually in water. By heating with water at 130° C. it is reconverted to formaldehyde. It is used as an antiseptic.

Etymologies

Sorry, no etymologies found.

Examples

  • - a 24-hour process called paraformaldehyde decontamination that involves locking down the lab.

    legitgov

  • Researchers at The University of Hong Kong found that disinfectants like bleach, ethanol, phenol, formaldehyde and paraformaldehyde can kill the virus, the W.H.O. said.

    Medpundit

  • In addition to formaldehyde, paraformaldehyde, trioxymethylene, methylal, hexamethylene-tetramine, and other substances containing a reactive methylene group, as well as acetaldehyde, benzaldehyde and other aldehydes may be employed to induce reaction.

    Synthetic Tannins

  • The slurry was subjected to paraformaldehyde (1%) for microbial inactivation.

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  • Slices were incubated in oxygenated ACSF for one hr and were then fixed in a solution containing 4% (wt/vol) paraformaldehyde in 100 mM phosphate buffer (pH 7.5) overnight at 4°C.

    PLoS ONE Alerts: New Articles

  • The eyes were then removed, immersed in 2% paraformaldehyde for one hour, infiltrated with sucrose, embedded in OCT and cut in sequence 10 µm horizontal sections apart on a cryostat.

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  • Differences were considered to be significant at Animals were perfused with PBS first, followed by 2% paraformaldehyde.

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  • Samples were then fixed with paraformaldehyde in 100 mM phosphate buffer pH 7.4 for 20 min, washed with PBS and blocked with PBS 3% (w/v) BSA, 1%

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  • Eyes were fixed in 2% paraformaldehyde for 30 minutes, and then retinal whole mount was prepared as above and examined under a confocal microscope.

    PLoS ONE Alerts: New Articles

  • Mixtures of paraformaldehyde + glutaraldehyde reduced average centroid sizes by 2-3%.

    BioMed Central - Latest articles

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