EDTMPS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。EDTMPS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。
產品名稱,質量指標,使用方法,包裝與貯存,
產品名稱
Ethylene Diamine Tetra (Methylene Phosphonic Acid) Sodium (EDTMPS)CAS No. 1429-50-1 Molecular Formula: C6H12O12N2P4Na8 Molecular weight: 612.13
質量指標
符合HG/T 3538-2003
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 |
pH（1%水溶液） | 9.5～10.5 | |
密度(20℃) g/cm | ≥ | 1.25 |
氯化物（以Cl計）% | ≤ | 3.0 |
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。EDTMPS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
EDTMPS用塑膠桶包裝, 每桶25kg或根據用戶需要確定。貯於室內陰涼處，貯存期十個月。
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Properties:
EDTMPS is 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. EDTMPS shows better antiscale effects to calcium sulfate and barium sulfate.
Specification:
items | index |
Appearance | Clear yellow to umber transparent liquid |
Active component（EDTMPS）% | 30.0min |
Organic phosphonic acid (as PO4) % | 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:
EDTMPS can 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:
Normally In 250kg net Plastic Drum, IBC drum can also be used as required. Storage for ten months in room shady and dry place
