乙二胺四甲叉膦酸鈉(EDTMPS)為弱鹼性有機膦類阻垢緩蝕劑，具有低毒或無毒、無污染，化學穩定性及耐溫性好的特點，為優良水質穩定劑。
主要特性及用途：緩蝕阻垢劑、螯合劑、氧漂穩定劑。
基本介紹
- 中文名：乙二胺四甲叉膦酸鈉
- 英文名：EDTMPS
- 別稱：乙二胺四亞甲基膦酸
- 化學式：C6H12O12N2P4NA8
- 分子量：612.13
- CAS登錄號：1429-50-1
- 密度：大於1.25
- 外觀：黃棕色透明液體
產品性能,符合HG/T 3538-2011,使用方法,包裝與貯存,安全防護,英文釋義,Properties:,Specification:,Usage:,Package and Storage:,Synonyms:,
產品性能
本品是含氮有機多元膦酸，屬陰極型緩蝕劑，與無機聚磷酸鹽相比，緩蝕率高3~5倍。能與水混溶，無毒無污染，化學穩定性及耐溫性好，在200℃下仍有良好的阻垢效果。在水溶液中能離解成8個正負離子，因而可以與多個金屬離子螯合，形成多個單體結構大分子網狀絡合物，鬆散地分散於水中，使鈣垢正常結晶被破壞。EDTMPS對硫酸鈣、硫酸鋇垢的阻垢效果好。
符合HG/T 3538-2011
項 目 | 指 標 |
外 觀 | 黃棕色透明液體 |
活性組分（以EDTMPS計）% ≥ | 30.0 |
有機膦（以PO4計）% ≥ | 10.0 |
亞磷酸（以PO3計）% ≤ | 5.0 |
磷酸（以PO4計）% ≤ | 1.0 |
密度（20℃）g/cm ≥ | 1.25 |
氯化物 （以Cl計）% ≤ | 3.0 |
pH值（1%水溶液） | 9.5-10.5 |
使用方法
EDTMPS用於循環水和鍋爐水的緩蝕阻垢劑、無氰電鍍的絡合劑、紡織印染行業螯合劑和氧漂穩定劑。在循環冷卻水中單獨投加時，一般劑量2~10mg/L。與HPMA按1:3比例復配後，可用於低壓鍋爐爐內水處理。EDTMPS也可與BTA、PAAS、鋅鹽等復配使用。
包裝與貯存
1、水處理劑乙二胺四甲叉膦酸鈉的包裝桶上應塗刷牢固的標誌，內容包括：生產廠名、產品名稱、商標、批號或生產日期、淨質量、廠址、本標準編號及GT/T191規定的“向上”標誌。
2每批出廠的水處理劑乙二胺四甲叉膦酸鈉應附有質量檢驗報告以及質量合格認定。
3水處理劑乙二胺四甲叉膦酸鈉的包裝採用聚乙烯塑膠桶包裝。桶包裝時加內蓋密封，每桶淨質量25kg；或採用鐵桶包裝，每桶淨質量200kg。
4運輸時應避免撞擊以免泄漏，儲存時不要暴曬。
5水處理劑乙二胺四甲叉膦酸鈉的有效儲存期為半年。
安全防護
EDTMPS為弱鹼性，操作時注意勞動保護，應避免與皮膚、眼睛等接觸，接觸後應立即用大量清水沖洗。
英文釋義
Ethylene Diamine Tetra (Methylene Phosphonic Acid) Sodium (EDTMPS)
CAS No. 1429-50-1
Molecular Formula: C6H12O12N2P4Na8Molecular weight: 612.13
Structural Formula:
Properties:
EDTMPSis nitrogenous organic polyphosphonic acid, a part of cathodic corrosion inhibitor.Its corrosion inhibition is 3~5 times better than that of inorganic polyphosphate. It can be fully dissolved in water, innocuous and none pollution to environment, has good chemical stability and thermal tolerance. It shows excellent scale inhibition ability under temperature 200℃. It can dissociate into 8 positive-negative ions, thus can chelate with many metal ions to form polymer reticulation complex, to destroy the normal crystallization of calcium scale.EDTMPSshows better antiscale effects to calcium sulfate and barium sulfate.
Specification:
items | index |
Appearance | Clear yellow to umber transparent liquid |
Active component (EDTMPS)% | 28.0min |
Organic phosphonic acid (asPO4)% | 10.0min |
Phosphorous acid (as PO3)% | 5.0max |
Phosphoric acid (asPO4)% | 1.0max |
pH (1% water solution) | 9.5-10.5 |
Density (20℃) g/cm | 1.25min |
Chloride (Cl)% | 3.0max |
Usage:
EDTMPScan be used as corrosion inhibitor in circulating cool water system and boiler water. It is a chelating agent in non-cyanogen electroplating industry and a water-softening agent in printing & dyeing industry. When used alone, 2~10mg/L is preferred. When built with HPMA by ratio ETDMP:HPMA=1:3, it can be used for low pressure boiler. It can also be built with BTA, PAAS and zinc salt.
Package and Storage:
200L plastic drum,IBC(1000L),customers’ requirement. Storage for ten months in shady room and dry place.
Synonyms:
EDTMPS;EDTMP;EDTMPA;Ethylene Diamine Tetra (Methylene Phosphonic Acid) Sodium; EDTPO;ETHYLENEDIAMINE TETRA(METHYLENEPHOSPHONIC ACID)
Keywords:EDTMPS
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