一本色道亚州综合久久精品,年轻的妈妈3韩国电影,最新日本免费一区二区视频,欧美亚洲国产日韩不卡

產(chǎn)品列表PRODUCTS LIST

首頁>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>183U苯酚C6H5OH氣體檢測(cè)管183U PHENOL 0.5-25.0ppm

苯酚C6H5OH氣體檢測(cè)管183U PHENOL 0.5-25.0ppm

簡(jiǎn)要描述:

苯酚C6H5OH氣體檢測(cè)管183U PHENOL 0.5-25.0ppm,苯酚(C6H6O,PhOH),又名石炭酸、羥基苯,是Z簡(jiǎn)單的酚類有機(jī)物,一種弱酸。常溫下為一種無色晶體。有毒。有腐蝕性,常溫下微溶于水。人口服致死量報(bào)道不一,LD為2~15g,或MLD為140mg/kg,14g/kg。國(guó)外報(bào)道酚液污染皮膚面積為25%,10分鐘死亡,血酚為0.74mmlo/L。低濃度酚能使蛋白變性,高濃度能使蛋白沉淀。對(duì)皮膚、粘膜有強(qiáng)烈的腐蝕作用,也可抑制中樞神經(jīng)系統(tǒng)或損害肝、腎功。

更新時(shí)間:2024-11-20

發(fā)郵件給我們:554328895@qq.com

分享到: 1
在線留言
苯酚C6H5OH氣體檢測(cè)管183U PHENOL 0.5-25.0ppm

苯酚C6H5OH氣體檢測(cè)管183U PHENOL 0.5-25.0ppm

1. PERFORMANCE
1) Measuring range :0.5-25.0 ppm
Number of pump strokes 2(200ml)
2) Sampling time :3 minutes/2 pump strokes
3) Detectable limit :0.3 ppm
4) Shelf life :2 years
5) Operating temperature :10~40℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 2 pump strokes
8) Colour change :Pale yellow→Pale brown
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:5% RSD-high:5%
3. CHEMICAL REACTION
Cresol is oxidized and the polymer is produced.
CH3C6H4OH+Ce4+→CH3C6H4O→(CH3C6H4O)n
4. CALIBRATION OF THE TUBE
ABSORPTIOMETRIC METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
25.0
20.0
15.0
10.0
5.0
3.0
1.0
0.5
ppm
????
????
Tube No.
183U CRESOL
88
Substance Interference ppm Coexistence
Phenols FIG.1 Similar stain is produced. 2.5 Higher readings are given.
Ammonia White stain is produced. 200 Discolouration of gas inlet side is
FIG.2 faded and higher reading are given.
Aliphatic amines 〃50 〃
Two layers discolouration of Pale
Aromatic amines Blue stain is produced. 50 brown and blue are produced and
higher reading are given.
(NOTE)
This tube scale is calibrated based on Phenol and the same scale is available for Cresol.
0
5
15
10
Phenol〔ppm〕?
FIG.1 Influence of Phenol
Cresol indicating value 〔ppm〕
5 0
5
15
10
Ammonia〔ppm〕?
FIG.2 Influence of Ammonia
Cresol indicating value 〔ppm〕
100 200
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 10℃ 15℃ 20℃ 30℃ 40℃
(ppm) (50°F) (59°F) (68°F) (95°F) (104°F)
25.0 31.2 27.8 25.0 21.8 18.8
20.0 24.5 22.3 20.0 17.5 15.0
15.0 18.4 16.7 15.0 13.1 11.3
10.0 12.3 11.1 10.0 8.8 7.5
5.0 6.1 5.6 5.0 4.4 3.8
3.0 3.7 3.3 3.0 2.6 2.3
1.0 1.2 1.1 1.0 0.9 0.8
0.5 0.5 0.5 0.5 0.5 0.5

水富县| 綦江县| 清涧县| 广河县| 类乌齐县| 和田市| 黑水县| 平昌县| 凤凰县| 广平县| 新龙县| 广安市| 平山县| 英山县| 柘城县| 达拉特旗| 浪卡子县| 秭归县| 阿拉善盟| 商水县| 萨嘎县| 大丰市| 平谷区| 浏阳市| 舟山市| 渝北区| 和林格尔县| 理塘县| 惠水县| 阳山县| 逊克县| 宜兰县| 赤水市| 宜良县| 巴马| 高雄县| 垦利县| 遂宁市| 葵青区| 高陵县| 略阳县|