二乙烯三胺五甲叉膦酸（DTPMPA）
Diethylene triamine penta (methylene phosphonic acid)
●(1) 分子量和化学结构式：Molecular Weight & Chemical Structure
| C9H28O25N3P5 | 573 |
O |
O |
|||||||||||||
| ‖ | ‖ | |||||||||||||||
| (HO)2 |
P |
CH2 | CH2 |
P |
-(OH)2 | |||||||||||
|
\ |
∕ | |||||||||||||||
| N-(CH2)2 |
N |
- |
( |
CH2)2N | ||||||||||||
| ∕ |
| |
\ | ||||||||||||||
| (HO)2 |
C |
H2P |
| |
CH2 |
P |
-(OH)2 | ||||||||||
| ‖ |
| |
‖ | ||||||||||||||
|
O |
C |
H2 |
P |
(OH)2 |
O |
|||||||||||
|
‖ |
||||||||||||||||
|
O |
●(2) 性能：Properties
能与水混溶，对硫酸钙、碳酸钙和硫酸钡均有良好的阻垢作用，特别在碱性溶液中(pH 10—11)时本品对碳酸钙仍有较好阻垢作用。本品与有机膦酸盐水稳剂相比具有以下几个独特性能：
①在碱性溶液中(pH 10—11)对碳酸钙仍有良好的阻垢能力。比HEDPA、ATMPA高1—2倍以上；
②对硫酸钡有良好阻垢能力。
③比HEDPA、ATMPA缓蚀效果更好。
④是二氧化氯杀菌剂的稳定剂。
The product shows excellent inhibition effect for calcium carbonate scales even under high
pH(10-11). Also it has good scaling inhibition effect for barium and calcium sulphate.
The product is used for scaling inhibition and anti-corrosion in circulation cooling water systems，boilers and filling water in oil fields, it can also be used as a kind of stabilizer for peroxides．
●(3) 规格：Specification
|
外 观 Appearance |
黄棕色透明液体Clear yellow to amber solution |
|
活性组份（DTPMP）含量Active content(as DTPMP) |
≥50% |
|
亚磷酸（以PO3计）含量Phosphorous (as PO33-) |
≤5.0% |
|
氯化物（以Cl-计）含量Chloride (as Cl-) |
14%~17% |
|
pH（1%水溶液）(1% water solution) |
≤2 |
|
密 度Density (20℃ g/cm3) |
1.30~1.45 |
|
钙螯合值Ca sequestration mgCaCO3/ g |
≥500 |
经31P—NMP（31P磷核磁共振）检验，图谱含量基本与美国孟山都（Monsanto）化学公司DEQUEST2060相符。
●(4)用途：Use
循环冷却水和锅炉水中优良缓蚀阻垢剂，特别适用于碱性循环冷却水中作为不调pH的阻垢缓蚀剂，并可用于含碳酸钡高的油田注水和冷却水、锅炉水的阻垢缓蚀剂、以及过氧化物和二氧化氯杀菌剂的稳定剂。在复配药剂中单独使用本品，无须投加分散剂，污垢沉积量仍很小。
●(5)包装和储存：Package and Storage
25Kg或200Kg塑料桶装，储存期为一年。
25Kg or 200Kg in plastic drums，storage one years．