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甲基丙烯酸CH2=C(CH3)COOH氣體檢測管216S METHACRYLIC ACID 1-50ppm,別名:異丁烯酸,分子式 C4H6O2;H2CC(CH3)COOH 外觀與性狀 無色結晶或透明液體,有刺激性氣味,健康危害:本品對鼻、喉有刺激性;高濃度接觸可能引起肺部改變。對皮膚有刺激性,可致灼傷。眼接觸可致灼傷,造成*性損害。慢性影響:可能引起肺、肝、腎損害。對皮膚有致敏性,致敏后,即使接觸極低水平的本品,也能引起皮膚刺癢和皮疹。
更新時間:2024-12-25
在線留言甲基丙烯酸CH2=C(CH3)COOH氣體檢測管216S METHACRYLIC ACID 1-50ppm
Tube No.216S
1. PERFORMANCE
1) Measuring range :1-50 ppm
Number of pump strokes 1(100ml)
2) Sampling time :1.5 minutes/1 pump stroke
3) Detectable limit :0.2 ppm
4) Shelf life :3 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 :Pale Pink→Yellow
2. RELATIVE STANDARD DEVIATION
RSD-low:15% RSD-mid.:10% RSD-high:10%
3. CHEMICAL REACTION
By reacting with alkali,PH indicator is discoloured.
CH3COOH+NaOH→CH3CO2Na+H2O
4. CALIBRATION OF THE TUBE
DIFFUSION TUBE METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
3
1
ppm
100ml
GAS To pump
5
10
20
30
40
50
216S ACETIC ACID
Substance ppm Interference ppm Coexistence
Sulphur dioxide Similar stain is produced. 1/20×Acetic Higher readings are given.
acid
Nitrogen dioxide 300 〃10 Unclear stain is produced.
Hydrogen chloride Pink stain is produced. 2×Acetic FIG.1 acid Higher readings are given.
Chlorine FIG.2 Yellow stain is produced. 5 〃
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 63 57 50 45 40
40 50 45 40 36 31
30 37 33 30 27 23
20 24 22 20 18 16
10 12 11 10 9 8
5 6 6 5 5 4
3 4 4 3 3 2
1 1 1 1 1 1
0
50
30
20
40
10
Hydrogen chloride〔ppm〕?
FIG.1 Influence of Hydrogen chloride
Acetic acid indicating value 〔ppm〕
100 200 300
Coexistence
Interference
0
60
20
40
Chlorine〔ppm〕?
FIG.2 Influence of Chlorine
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