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            上海境宣實(shí)業(yè)有限公司
            中級(jí)會(huì)員 | 第17年

            17601355022

            當(dāng)前位置:上海境宣實(shí)業(yè)有限公司>>日本光明北川式氣體檢測管>>氣體快速檢測管>> 190U1,1,2,2-四溴乙烷CHBr2CHBr2氣體檢測管190U 4-100ppm

            1,1,2,2-四溴乙烷CHBr2CHBr2氣體檢測管190U 4-100ppm

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            產(chǎn)品型號(hào)190U

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            廠商性質(zhì)代理商

            所  在  地上海市

            更新時(shí)間:2025-04-21 20:52:32瀏覽次數(shù):2453次

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            1,1,2,2-四溴乙烷CHBr2CHBr2氣體檢測管,1,1,2,2-Tetrabromoethane 4-100ppm,別名:四溴化乙炔,英文名稱 1,1,2,2-Tetrabromoethane;Acetylene tetrabromide,分子式 C2H2Br4;Br2HCCHBr2,健康危害:對(duì)中樞神經(jīng)系統(tǒng)有抑制作用,對(duì)呼吸道有刺激作用,可引起肝、腎損害及單核細(xì)胞增多,可引起皮炎。

            1,1,2,2-四溴乙烷CHBr2CHBr2氣體檢測管190U 4-100ppm

            Tube 90U
            0
            30
            40
            50
            20
            10
            Ethanol〔ppm〕?
            FIG.1 Influence of Ethanol
            Ethyl cellosolve indicating value 〔ppm〕
            100 200 300 400 500
            (300ml)? (100ml)?
            0
            300
            400
            500
            200
            100
            1,1,1-Trichloroethane〔ppm〕?
            FIG.2 Influence of 1,1,1-Trichloroethane
            Ethyl cellosolve indicating value 〔ppm〕
            100 200 300 400 500 600
            (300ml)?
            1. PERFORMANCE
            1) Measuring range :5-500 ppm
            Number of pump strokes 3(300ml)
            2) Sampling time :4.5 minutes/3 pump strokes
            3) Detectable limit :2 ppm
            4) Shelf life :2 years
            5) Operating temperature :10~35℃
            6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
            7) Reading :Direct reading from the scale calibrated by 3 pump strokes
            8) Colour change :Yellow→Pale blue
            2. RELATIVE STANDARD DEVIATION
            RSD-low:10% RSD-mid.:10% RSD-high:10%
            3. CHEMICAL REACTION
            Chromium oxide is reduced.
            C2H5OCH2CH2OH+Cr6++H2SO4→Cr3+
            4. CALIBRATION OF THE TUBE
            GAS CHROMATOGRAPHY
            5. INTERFERENCE AND CROSS SENSITIVITY
            GAS To pump
            500
            400
            500
            200
            150
            100
            50
            20
            5
            300ml
            ppm
            (White)
            DEHUMIDIFIER
            ?? ?? ??
            ????
            190U ETHYL CELLOSOLVE
            Substance Interference Coexistence
            Alcohols FIG.1 Similar stain is produced. Higher readings are given.
            Ethers 〃〃
            (Pmaroarfefi nth haynd Cro3c)arbons Whole reagent is changed to Brown. 〃
            Aromatic hydrocarbons 〃〃
            Esters 〃〃
            Ketones 〃〃
            Halogenated hydrocarbons FIG.2 〃〃
            TEMPERATURE CORRECTION TABLE
            Scale True Concentration (ppm)
            Readings 10℃ 15℃ 20℃ 25℃ 30℃ 35℃
            (ppm) (50°F) (59°F) (68°F) (77°F) (80°F) (95°F)
            500 800 620 500 410 335 265
            400 620 490 400 325 260 200
            300 450 365 300 245 195 145
            200 290 245 200 160 125 95
            150 215 185 150 120 90 70
            100 145 125 100 80 60 45
            50 75 65 50 40 30 25
            20 30 25 20 15 12 10
            5 10 7 5 4 3 2

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