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管>氣體快速檢測管>210U乙酸戊酯CH3CO2(CH2)4CH3氣體檢測管210U PENTYL ACETATE 10-200

乙酸戊酯CH3CO2(CH2)4CH3氣體檢測管210U PENTYL ACETATE 10-200

簡要描述:

乙酸戊酯CH3CO2(CH2)4CH3氣體檢測管210U PENTYL ACETATE 10-200ppm,主要用途:用作溶劑、稀釋劑,制造香精、化妝品、人造革、膠卷、火藥等。健康危害: 對眼及上呼吸道粘膜有刺激作用,可引起 結膜炎、鼻炎、咽喉炎等,重者伴有頭痛、嗜睡、胸悶、心悸、食欲不振、惡心、嘔吐等癥狀。皮膚長期接觸可致、皮炎或濕疹。有的可發(fā)生貧血和嗜酸性粒細胞增多。燃爆危險:本品易燃,具刺激性。

更新時間:2024-11-20

發(fā)郵件給我們:554328895@qq.com

分享到: 1
在線留言
乙酸戊酯CH3CO2(CH2)4CH3氣體檢測管210U PENTYL ACETATE 10-200

乙酸戊酯CH3CO2(CH2)4CH3氣體檢測管210U PENTYL ACETATE 10-200ppm

Tube No.210U
1. PERFORMANCE
1) Measuring range :10-200 ppm
Number of pump strokes 3(300ml)
2) Sampling time :4.5 minutes/3 pump strokes
3) Detectable limit :4 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 3 pump strokes
8) Colour change :Pale yellow→Pale blue(more than 20 ppm)
〃 →Dark brown(20 ppm or less)
2. RELATIVE STANDARD DEVIATION
RSD-low:15% RSD-mid.:10% RSD-high:10%
3. CHEMICAL REACTION
Chromium oxide is reduced.
CH3CO2CH2(CH2)3CH3+Cr6++H2SO4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
10
30
50
100
150
200
ppm
300ml
GAS To pump
DEHUMIDIFIER(White)
210U PENTYL ACETATE
Substance Interference Coexistence
Alcohols Similar or Blue stain is produced. Higher readings are given.
Esters 〃〃
Ketones 〃〃
Aliphatic hydrocarbons 〃〃
Aromatic hydrocarbons The accuracy of readings is not affected. Whole reagent is changed to Brown.
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 10℃ 20℃ 30℃ 40℃
(ppm) (50°F) (68°F) (86°F) (104°F)
200 240 200 160 120
150 180 150 130 100
100 120 100 80 70
50 60 50 40 30
30 36 30 24 18
10 10 10 8 6

伊吾县| 周口市| 浦县| 康乐县| 禹城市| 石泉县| 建德市| 石棉县| 怀安县| 剑河县| 西昌市| 盐亭县| 岫岩| 石台县| 土默特左旗| 嘉义市| 驻马店市| 翁源县| 湖州市| 阆中市| 南通市| 邵阳县| 枞阳县| 奉化市| 邢台市| 新野县| 华池县| 高陵县| 遵化市| 乌兰浩特市| 鹤山市| 平乡县| 安龙县| 繁昌县| 昌黎县| 庆阳市| 大城县| 阿巴嘎旗| 法库县| 安顺市| 伊金霍洛旗|