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屋裡多少甲醛算超标
屋裡多少甲醛算超标
更新时间:2024-07-23 09:15:13

  我國推薦性标準《室内空氣質量标準(GB/T18883-2002)》規定,室内甲醛濃度要求小于等于每立方米0.1毫克(0.1mg/m3),即每立方米空氣中的甲醛濃度不得超過0.1毫克。

  甲醛,化學式HCHO或CH₂O,式量30.03,又稱蟻醛。無色氣體,刺激性氣味,對人眼、鼻等有刺激作用。氣體相對密度1.067(空氣=1),液體密度0.815g/cm³(-20℃)。熔點-92℃,沸點-19.5℃。易溶于水和乙醇。水溶液的濃度最高可達55%,通常是40%,稱做甲醛水,俗稱福爾馬林(formalin),是有刺激氣味的無色液體。

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