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                    1. 韩国三级大全久久网站_色噜噜一区二区三区_高清欧美性猛交xxxx黑人猛_激情五月开心婷婷_来一水AV@lysav

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                      首頁(yè)>產(chǎn)品中心>日本光明北川式氣體檢測(cè)管>氣體快速檢測(cè)管>211U醋酸甲酯CH2=CHCO2CH3氣體檢測(cè)管211U METHYL ACRYLATE 2-60ppm

                      醋酸甲酯CH2=CHCO2CH3氣體檢測(cè)管211U METHYL ACRYLATE 2-60ppm

                      簡(jiǎn)要描述:

                      乙酸甲酯/醋酸甲酯CH2=CHCO2CH3氣體檢測(cè)管211U METHYL ACRYLATE 2-60ppm,丙烯酸甲酯Methyl acrylate,丙烯酸異丁酯CH2=CHCO2CH,別名:敗脂酸甲酯,中文名稱乙酸甲酯,別名醋酸甲酯,英文名稱 methyl acetate;acetic acid methyl ester,分子式 C3H6O2;CH3COOCH3 外觀與性狀 無(wú)色透明液體,有香味,健康危害:具有麻醉和刺激作用。接觸本品蒸氣引起眼灼痛、流淚、進(jìn)行性呼吸困難、頭痛、頭暈

                      更新時(shí)間:2024-12-26

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                      醋酸甲酯CH2=CHCO2CH3氣體檢測(cè)管211U METHYL ACRYLATE 2-60ppm

                      乙酸甲酯/醋酸甲酯CH2=CHCO2CH3氣體檢測(cè)管211U METHYL ACRYLATE 2-60ppm

                      Tube No.211U

                      1. PERFORMANCE
                      1) Measuring range :5-60 ppm
                      Number of pump strokes 2(200ml)
                      2) Sampling time :3 minutes/2 pump strokes
                      3) Detectable limit :0.5 ppm
                      4) Shelf life :2 years
                      5) Operating temperature :0~40℃
                      6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
                      7) Reading :Direct reading from the scale calibrated by 2 pump strokes
                      8) Colour change :Yellow→Pale blue
                      2. RELATIVE STANDARD DEVIATION
                      RSD-low:15% RSD-mid.:10% RSD-high:10%
                      3. CHEMICAL REACTION
                      Chromium oxide is reduced.
                      CH2=CHCO2CH3+Cr6++H2SO4→Cr3+
                      4. CALIBRATION OF THE TUBE
                      GAS CHROMATOGRAPHY
                      5. INTERFERENCE AND CROSS SENSITIVITY
                      5
                      10
                      20
                      40
                      60
                      ppm
                      200ml
                      GAS To pump
                      DEHUMIDIFIER
                      (White)
                      211U METHYL ACRYLATE
                      TEMPERATURE CORRECTION TABLE
                      Scale True Concentration (ppm)
                      Readings 0℃ 10℃ 20℃ 30℃ 40℃
                      (ppm) (32°F) (50°F) (68°F) (86°F) (104°F)
                      60 88 70 60 54 48
                      40 54 46 40 36 32
                      20 28 24 20 18 16
                      10 14 12 10 9 8
                      5 7 6 5 4 3
                      Substance Interference Coexistence
                      Alcohols Similar stain is produced. Higher readings are given.
                      Paraffin hydrocarbons (more than C3) FIG.2 Whole reagent is changed to dark Brown. 〃
                      Halogenated hydrocarbons 〃〃
                      Esters 〃〃
                      Aromatic hydrocarbons FIG.1 〃〃
                      0
                      20
                      30
                      10
                      50
                      60
                      40
                      80
                      100
                      90
                      70
                      Toluene〔ppm〕?
                      FIG.1 Influence of Toluene
                      Methyl acrylate
                      indicating value 〔ppm〕
                      10 20 30 40 50 0
                      20
                      30
                      10
                      50
                      60
                      40
                      80
                      100
                      90
                      70
                      Hexane〔ppm〕?
                      FIG. 2 Influence of Hexane

                      韩国三级大全久久网站_色噜噜一区二区三区_高清欧美性猛交xxxx黑人猛_激情五月开心婷婷_来一水AV@lysav
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