国产精品久久久久久久久久久免费看|国精产品一区二区三区四区糖心|国产成人色视频一区二区三区|国产成人精品无码一区二区老年人

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>224SA單乙醇胺H2NCH2CH2OH氣體檢測管224SA MONOETHANOL AMINE 0.5-50

單乙醇胺H2NCH2CH2OH氣體檢測管224SA MONOETHANOL AMINE 0.5-50

簡要描述:

單乙醇胺H2NCH2CH2OH氣體檢測管224SA MONOETHANOL AMINE 0.5-50ppm,異名 Monoethanolamine;Ethanolamine;colamine;ethylolamine CAS 41-43-5,單乙醇胺是有刺激性和腐蝕性;雖然有報道本品具有致敏反應(yīng),但當(dāng)將它用于中性注射劑和局部用制劑時,通常沒有不良反應(yīng)。一般而論,單乙醇胺鹽的毒性要小于單乙醇胺。

更新時間:2025-04-15

在線留言
單乙醇胺H2NCH2CH2OH氣體檢測管224SA MONOETHANOL AMINE 0.5-50

單乙醇胺H2NCH2CH2OH氣體檢測管224SA MONOETHANOL AMINE 0.5-50ppm

Tube No.224SA

1. PERFORMANCE
1) Measuring range :1-50 ppm 0.5-25 ppm
Number of pump strokes 1(100ml) 2(200ml)
2) Sampling time :1 minute/1 pump stroke
3) Detectable limit :0.2 ppm(200ml)
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 1 pump stroke
8) Colour change :Pink→Pale purple
2. RELATIVE STANDARD DEVIATION
3. CHEMICAL REACTION
By reacting with Sulphuric acid, PH indicator is discoloured.
H2NCH2CH2OH+H2SO4→(HOC2N5NH3)2SO4
4. CALIBRATION OF THE TUBE
COLOURIMETRY METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
1
3
5
10
15
20
25
30
40
50
ppm
GAS To pump
224SA MONOETHANOL AMINE
Substance Interference Coexistence
Other amines Brownish yellow stain is produced. Double-stain layer(Brownish yellow
FIG.1 and Pale purple)is produced.
ammonia Similar stain is produced. Double-stain layer(Yellow and Pale
FIG.2 purple)is produced.
Hydrazine 〃〃
(ACtmOo2s+phHe2rOic) air 〃
0
40
20
Methyl amine〔ppm〕?
FIG.1 Influence of Methyl amine
Monoethanol amine
indicating value 〔ppm〕
20 40
Coexistence
Interference
0
40
20
Ammonia〔ppm〕?
FIG.2 Influence of Ammonia
Monoethanol amine
indicating value 〔ppm〕
5 10
Coexistence
Interference
(NOTE)
1)In case of 2 pump strokes, following formula is available for the actual concentration.
Actual concentration=1/2×Temperature corrected value
2)In any case, Pale purple stain only is indicated concentration of Monoethanal amine. Other discolourations
may be disregarded.
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 0℃ 10℃ 20℃ 30℃ 40℃
(ppm) (32°F) (50°F) (68°F) (86°F) (104°F)
50 - - 50 35 29
40 - 65 40 30 25
30 - 49 30 23 20
25 - 39 25 20 17
20 65 30 20 16 14
15 45 22 15 12 10
10 29 14 10 8 7
5 12 7 5 4 3
3 6 4 3 3 2
1 1 1 1 1 1

青青草97国产精品免费观看| 麻豆av久久av盛宴av| 饥渴少妇高潮视频大全| 日韩色欲人妻无码精品av| 国产亚洲精品成人av在线| 内射人妻少妇无码一本一道| 国产超a级动作大片中文字幕| 亚洲va久久久噜噜噜久久狠狠 | 蜜桃久久精品成人无码av| 国内av一区二区三区| 亚洲日本va午夜中文字幕一区| av永久天堂一区二区三区| 日韩欧美人妻一区二区三区| 亚洲v天堂v手机在线| 免费无码又爽又高潮视频| 久久人人爽爽人人爽人人片av| 国精产品自偷自偷综合下载| 制服丝袜人妻中文字幕在线| 最近中文字幕完整版| 国产乱人伦偷精品视频| 欧美不卡视频一区发布| 国产又爽又刺激的视频| 综合国产综合亚洲综合| 国产av熟女一区二区三区 | 2017亚洲天堂最新地址| 一本本月无码-| 麻豆精品偷拍人妻在线网址| 日日躁夜夜躁狠狠躁超碰97| 亚洲精品一区二区三区四区五区| 国产成人精品一区二三区| 国产sm调教折磨视频失禁| 无码av大香线蕉伊人久久| 国产精品jizz视频| 免费av在线观看播放| 国产成人免费a在线视频 | 亚洲国产高清在线观看视频| 中文字幕无码日韩中文字幕| 色综合伊人色综合网站| 亚洲色婷婷六月亚洲婷婷6月| 丰满岳乱妇久久久| 婷婷久久综合九色综合绿巨人 |