请输入您要查询的英文单词:

 

单词 paraformaldehyde
释义

paraformaldehyde


par·a·for·mal·de·hyde

P0058300 (păr′ə-fôr-măl′də-hīd′)n. A white solid oligomer of formaldehyde, (CH2O)n, where n is at least 6, used as a disinfectant, fumigant, and fungicide.

paraformaldehyde

(ˌpærəfɔːˈmældɪˌhaɪd) or

paraform

n (Elements & Compounds) a white amorphous solid polymeric form of formaldehyde: used as a convenient source of formaldehyde and as a fumigant. Formula: (CH2O)n, where n lies between 6 and 50

par•a•form•al•de•hyde

(ˌpær ə fɔrˈmæl dəˌhaɪd, -fər-)

n. a white, crystalline polymer of formaldehyde, (HCOH)n, used chiefly as an antiseptic. Also called par′a•form` (-ˌfɔrm) [1930–35]

paraformaldehyde


paraformaldehyde:

see formaldehydeformaldehyde
, HCHO, the simplest aldehyde. It melts at −92&degC;, boils at −21&degC;, and is soluble in water, alcohol, and ether; at STP, it is a flammable, poisonous, colorless gas with a suffocating odor.
..... Click the link for more information.
.

Paraformaldehyde

 

(also paraform), a mixture of formaldehyde polymerization products, called polyoxymethylenes, of the general formula (—CH2O—)n where n is any integer from eight to 100. Paraformaldehyde is a white, crystalline substance with a melting range between 105° and 150°C. It is obtained by evaporating concentrated, aqueous solutions of formaldehyde in vacuo. Paraformaldehyde is a convenient source of formaldehyde.

paraformaldehyde

[¦par·ə·fȯr′mal·də‚hīd] (organic chemistry) (HCHO)n Polymer of formaldehyde where n is greater than 6; white, alkali-soluble solid, insoluble in alcohol, ether, and water; used as a disinfectant, fumigant, and fungicide, and to make resins.

paraformaldehyde


par·a·for·mal·de·hyde

(par'ă-fōr-mal'dĕ-hīd), A polymer of formaldehyde, used as a disinfectant. Synonym(s): trioxymethylene

paraformaldehyde

(păr″ă-for-măl′dĕ-hīd) A white, powdered antiseptic and disinfectant, a polymer of formaldehyde.

par·a·for·mal·de·hyde

(par'ă-fōr-mal'dĕ-hīd) A disinfectant agent.
FinancialSeeformaldehydeSee PFA
See PFA
随便看

 

英语词典包含2567994条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2024/12/23 2:46:42