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单词 paraformaldehyde
释义 para·formaldehyde
\|parə+\ noun
Etymology: International Scientific Vocabulary para- (I) + formaldehyde
: a white solid that is a mixture of hydrated polymers of formaldehyde having the formula (HCHO)n.H2O or HO(CH2O)nH in which n varies from about 8 to 100, that is usually made by evaporation of an aqueous solution of formaldehyde, that readily regenerates formaldehyde especially on heating, and that is used as a source of formaldehyde : a mixture of polyoxymethylene glycols
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