paraformaldehyde

paraformaldehyde
a white crystalline solid, the polymerized form of formaldehyde gas (usually 90-97% pure). It has an irritating odor and can emit potentially flammable and explosive formaldehyde vapors at room temperatures. Dissolved in water, it can be used to fix and preserve fish specimens in the field, having less weight in transport than liquid formalin solution. As a white powdery substance, it is best transported across borders in its fully-labeled container

Dictionary of ichthyology. 2009.

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  • paraformaldéhyde — ● paraformaldéhyde nom masculin Synonyme de trioxanne. ● paraformaldéhyde (synonymes) nom masculin Synonymes : trioxanne …   Encyclopédie Universelle

  • paraformaldehyde — par a*form*al de*hyde, n. [Pref. para + formaldehyde.] (Chem.) 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… …   The Collaborative International Dictionary of English

  • Paraformaldehyde — Chembox new ImageFile = Paraformaldehyd.svg ImageSize = 150px IUPACName = Polyoxymethylene OtherNames = Section1 = Chembox Identifiers CASNo = 30525 89 4 PubChem = 24898648 SMILES = Section2 = Chembox Properties Formula = (CH2O)n (n = 8 100)… …   Wikipedia

  • paraformaldehyde — paraformaldehidas statusas T sritis chemija apibrėžtis Formaldehido oligomeras. formulė Formulę žr. priede. priedas( ai) Grafinis formatas atitikmenys: angl. paraform; paraformaldehyde rus. параформ; параформальдегид ryšiai: sinonimas –… …   Chemijos terminų aiškinamasis žodynas

  • paraformaldehyde — noun Date: 1894 a white powder (CH2O)x that consists of a polymer of formaldehyde and is used especially as a disinfectant …   New Collegiate Dictionary

  • paraformaldehyde — /par euh fawr mal deuh huyd , feuhr /, n. Chem. a white, crystalline polymer of formaldehyde, (HCOH)n, from which it is obtained by evaporation of the aqueous solution: used chiefly as an antiseptic. Also called paraform /par euh fawrm /. [1930… …   Universalium

  • paraformaldehyde — noun A solid oligomer of formaldehyde that is used as a fumigant, and as a fixative in histology …   Wiktionary

  • paraformaldehyde — A polymer of formaldehyde, used as a disinfectant. SYN: trioxymethylene. * * * para·form·al·de·hyde .par ə fȯr mal də .hīd, fər n a white powder (CH2O)x that consists of a polymer of formaldehyde and is used esp. as a fungicide …   Medical dictionary

  • paraformaldehyde — para·formaldehyde …   English syllables

  • paraformaldehyde — par•a•form•al•de•hyde [[t]ˌpær ə fɔrˈmæl dəˌhaɪd, fər [/t]] n. chem. a white, crystalline polymer of formaldehyde, (HCOH) n , used chiefly as an antiseptic. Also called par′a•form [[t] ˌfɔrm[/t]] • Etymology: 1930–35 …   From formal English to slang

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