paraformaldehyden.

Brit.

/ˌparəfɔːˈmaldᵻhʌɪd/,

/ˌparəfəˈmaldᵻhʌɪd/, U.S.

/ˈˌpɛrəˌfɔrˈmældəˌhaɪd/,

/ˈˌpɛrəfərˈmældəˌhaɪd/

Origin: Formed within English, by derivation. Etymons: para- prefix¹, formaldehyde n.

Etymology: < para- prefix¹ + formaldehyde n.

Chemistry.

A white crystalline solid, obtained by the evaporation of an aqueous solution of formaldehyde (methanal), which is a polymer of formaldehyde and is used as a disinfectant, fumigant, and bactericide, and as an intermediate in chemical synthesis; polyoxymethylene, (HCHO)_n. Cf. paraform n.

ΘΚΠ

the world > matter > chemistry > polymer chemistry > polymers (named others) > [noun] > paraformaldehyde

paraformaldehyde1894

paraform1897

1894 Jrnl. Chem. Soc. 66 i. 487 Methylal is readily obtained by this method from paraformaldehyde and methylic alcohol.

1913 J. Walker Org. Chem. 40 Paraformaldehyde is largely used as a source of formaldehyde for the purpose of disinfecting rooms, clothing, etc.

1951 R. E. Kirk & D. F. Othmer Encycl. Chem. Technol. VI. 861 On heating, paraformaldehyde depolymerizes to yield a mixture of monomeric formaldehyde gas and water vapor.

1992 Lancet 27 June 1567/2 Human umbilical vein endothelial cells were cultured on glass coverslips and then fixed with 2% paraformaldehyde.

This entry has been updated (OED Third Edition, June 2005; most recently modified version published online March 2022).

单词	paraformaldehyde
释义	paraformaldehyden. Brit. /ˌparəfɔːˈmaldᵻhʌɪd/, /ˌparəfəˈmaldᵻhʌɪd/, U.S. /ˈˌpɛrəˌfɔrˈmældəˌhaɪd/, /ˈˌpɛrəfərˈmældəˌhaɪd/ Origin: Formed within English, by derivation. Etymons: para- prefix¹, formaldehyde n. Etymology: < para- prefix¹ + formaldehyde n. Chemistry. A white crystalline solid, obtained by the evaporation of an aqueous solution of formaldehyde (methanal), which is a polymer of formaldehyde and is used as a disinfectant, fumigant, and bactericide, and as an intermediate in chemical synthesis; polyoxymethylene, (HCHO)_n. Cf. paraform n. ΘΚΠ the world > matter > chemistry > polymer chemistry > polymers (named others) > [noun] > paraformaldehyde paraformaldehyde1894 paraform1897 1894 Jrnl. Chem. Soc. 66 i. 487 Methylal is readily obtained by this method from paraformaldehyde and methylic alcohol. 1913 J. Walker Org. Chem. 40 Paraformaldehyde is largely used as a source of formaldehyde for the purpose of disinfecting rooms, clothing, etc. 1951 R. E. Kirk & D. F. Othmer Encycl. Chem. Technol. VI. 861 On heating, paraformaldehyde depolymerizes to yield a mixture of monomeric formaldehyde gas and water vapor. 1992 Lancet 27 June 1567/2 Human umbilical vein endothelial cells were cultured on glass coverslips and then fixed with 2% paraformaldehyde. This entry has been updated (OED Third Edition, June 2005; most recently modified version published online March 2022). < n.1894
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