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formaldehyde    音标拼音: [fɔrm'ældəh,ɑɪd] [fɚm'ældəh,ɑɪd]
n. 甲醛,蚁醛

甲醛,蚁醛

formaldehyde
n 1: a colorless poisonous gas; made by the oxidation of
methanol [synonym: {formaldehyde}, {methanal}]

Formaldehyde \For*mal"de*hyde\, n. [Formic aldehyde.] (Chem.)
A colorless, volatile liquid, {H2CO}, resembling acetic or
ethyl aldehyde, and chemically intermediate between methyl
alcohol and formic acid.
[1913 Webster]


Aldehyde \Al"de*hyde\ ([a^]l"d[-e]*h[imac]d), n. [Abbrev. fr.
alcohol dehydrogenatum, alcohol deprived of its hydrogen.]
1. (Chem.) A colorless, mobile, and very volatile liquid
obtained from alcohol by certain processes of oxidation.
[1913 Webster]

2. (Chem.) Any compound having the group {-CHO}. Methyl
aldehyde, the simplest aldehyde, is more commonly called
formaldehyde, {H-CHO}, and acetic aldehyde is now more
commonly called {acetaldehyde}. The higher aldehydes may
be solids. A {reducing sugar} typically contains the
aldehyde group.
[PJC]

Note: The aldehydes are intermediate between the alcohols and
acids, and differ from the alcohols in having two less
hydrogen atoms in the molecule, as common aldehyde
(called also {acetaldehyde}, {acetic aldehyde} or
{ethyl aldehyde}), {C2H4O}; methyl aldehyde (called
also {formaldehyde}), {CH2O}.
[1913 Webster PJC]

{Aldehyde ammonia} (Chem.), a compound formed by the union of
aldehyde with ammonia.
[1913 Webster]

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  • Formaldehyde - Wikipedia
    Formaldehyde ( fɔːrˈmældɪhaɪd ⓘ for-MAL-di-hide, US also fər - ⓘ fər-) (systematic name methanal) is an organic compound with the chemical formula CH2O and structure H2C=O The compound is a pungent, colourless gas that polymerises spontaneously into paraformaldehyde
  • Facts About Formaldehyde | US EPA
    Formaldehyde is a chemical used widely by industry to manufacture building materials and numerous household products It is also a by-product of combustion and certain other natural processes
  • Formaldehyde: Toxicity, Everyday Exposure, Cancer Risk
    Formaldehyde is toxic to humans, causing respiratory side effects and increasing the risk of certain cancers Learn when exposure may be dangerous
  • Formaldehyde and Cancer Risk - NCI
    A fact sheet that discusses formaldehyde and its possible association with cancer Includes resources for more information
  • Formaldehyde | Public Health Statement | ATSDR
    When you breathe air containing formaldehyde, most of the formaldehyde is quickly broken down in the cells lining your respiratory tract and breathed out Only at high levels does formaldehyde enter your blood
  • Formaldehyde Is Everywhere, But Is It Dangerous? - HowStuffWorks
    Formaldehyde, present in many household products, is generally not harmful in small amounts but can cause irritation of the skin, eyes, nose and throat, especially in sensitive individuals
  • Formaldehyde | Preservative, Solution, Exposure | Britannica
    formaldehyde (HCHO), an organic compound, the simplest of the aldehydes, used in large amounts in a variety of chemical manufacturing processes It is produced principally by the vapour-phase oxidation of methanol and is commonly sold as formalin, a 37 percent aqueous solution
  • Formaldehyde | US EPA
    Information on formaldehyde and the regulation of formaldehyde emissions from composite wood products under the Formaldehyde Standards for Composite Wood Products Act in the Toxic Substances Control Act (TSCA)
  • Formaldehyde - Chemical Safety Facts
    Formaldehyde may be best known for its preservative and anti-bacterial properties Formaldehyde-based chemistry is also used to make a range of products in the building and construction, health care, automotive, and personal care products sectors
  • Formaldehyde | ToxFAQs™ | ATSDR - Centers for Disease Control and . . .
    What is formaldehyde? At room temperature, formaldehyde is a colorless, flammable gas that has a distinct, pungent smell Small amounts of formaldehyde are naturally produced by plants, animals, and humans It is used in the production of fertilizer, paper, plywood, and urea-formaldehyde resins





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