產(chǎn)品詳情
美國(guó)CHEMetrics R-1805 二苯基卡巴補(bǔ)充試劑包
Carbohydrazide CHEMets Refill
Catalog No. R-1805
Method: PDTS
30 ampoules
Visual KitsRange |
MDL |
Method |
Kit Catalog No. |
Refill Catalog No. |
0-0.50 & 0.50-4.0 ppm |
0.05 ppm |
PDTS |
K-1805 |
R-1805 |
Instrumental KitsRange |
Method |
Kit Catalog No. |
0.10-2.50 ppm |
PDTS |
K-1803 |
Method
Carbohydrazide is added to boiler system water as an oxygen scavenger to control corrosion. It is a safer alternative to hydrazine, which is toxic. Carbohydrazide reacts with oxygen at low temperatures and pressures. The products of the reb are volatile and do not contribute dissolved solids to the boiler water. Like hydrazine, carbohydrazide will also passivate bl surfaces.The PDTS Method
Reference: G. Frederick Smith Chemical Co., The Iron Reagents, 3rd ed., p. 47 (1980).The test kits employ the PDTS chemistry. Carbohydrazide reduces ferric iron to the ferrous state, and the ferrous iron reacts with PDTS (3-(2-pyridyl)-5,6-bis(4-phenylsulfonic acid)-1,2,4-triazine disodium salt) to b a peach-pink colored complex in direct proportion to the carbohydrazide concentration. Test results are expressed as ppm (mg/L) carbohydrazide.
美國(guó)CHEMetrics中國(guó)代理商:上海益朗儀器有限公司。
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