简介

一、产品性能

二、质量指标

三、应用范围与使用方法

四、包装与贮存

五、安全防护

英文资料

简介

Disodium salt of 1-Hydroxy EXTylidene-1,1-Diphosphonic Acid

【CAS】 7417-83-7

别名：羟基亚乙基二膦酸二钠 依替磷酸钠 CubleK2012固体　Dequest 2016BD

分子式 ：C2H6O7P2 Na2

相对分子质量：250

结构式 ：

一、产品性能

本品是一种有机膦酸类阻垢缓蚀剂，能与铁、铜、锌等多种金属离子形成稳定的络合物，能溶解金属表面的氧化物。在250℃下仍能起到良好的缓蚀阻垢作用，在高pH值下仍很稳定，不易水解，一般光热条件下不易分解。耐酸碱性、耐氯氧化性能较其它有机膦酸（盐）好。可与水中金属离子，尤其是钙离子形成六圆环螯合物，因而具较好的阻垢效果并具明显的溶限效应，当和其它水处理剂复合使用时，表现出理想的协同效应。

二、质量指标

项 目 　指 标

外 观 　无色至微黄色透明液体 　白色固体粉末

活性组份（以HEDP计）， % ≥　16.5 　74.0—79.0

活性组份(以 HEDP·Na2计) ， % ≥　20.0 　89.8

密度（20℃）g/cm　1.12–1.22 　——

铁（以Fe计）含量ppm ≤　—— 　35

亚磷酸（以PO3计）% ≤　—— 　2

干燥失重 %　—— 　3—6

PH值(1%水溶液)　4.0-6.0 　4.0—6.0

三、应用范围与使用方法

HEDP·Na2广泛应用于电力、化工、冶金、化肥等工业循环冷却水系统及中、低压锅炉、油田注水及输油管线的阻垢和缓蚀；在轻纺工业中，可以作金属和非金属的清洗剂，漂染工业的过氧化物稳定剂和固色剂，无氰电镀工业的络合剂。

四、包装与贮存

HEDP·Na2液体为塑料桶包装，每桶30Kg或250Kg；HEDP·Na2固体为塑料编织袋包装，每袋净重25Kg。贮于室内阴凉通风处，防潮，严防暴晒，贮存期十个月。

五、安全防护

HEDP·Na2为弱酸性，应避免与眼睛、皮肤接触，一旦溅到身上，应立即用大量水冲洗。

英文资料

Disodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid

(HEDP·Na2)

CAS No. 7417-83-7 CubleK2012 Dequest: 2016BD

Molecular Formula: C2H6O7P2Na2 Molecular weight: 250

Properties:

HEDP·Na2 is an organophosphonic acid corrosion inhibitor, it can chelate with Fe, Cu, and Zn ions, it can dissolve the oxidized materials, it has good scale and corrosion inhibition effects even under 250℃, it is stable under high pH value, not easy to be hydrolyzed, not easy to be decomposed under normal light and heat condition, its acid/alkaline and chloride oxidation tolerance are better than that of other organophosph-onic acids. HEDP·Na2 can form six-ring chelating compounds with metal ions in water system, Ca2+ in particular. HEDP·Na2 has good scale inhibition effects and obvious dissolution threshold effects. When used with other Water Treatment Chemicals, the synergistic effects is better.

Specification:

items　index

Appearance　Colorless to light yellow transparent liquid　White powder

Active component（HEDP）％ 　16.5 min　74.0-79.0

Active component（HEDP·Na2）％　20.0 min　89.8 min

density（20℃）g/cm3　1.12-1.22　--

Fe ppm　--　35 max

Phosphorous acid（PO33-计）%　--　3 max

Dry weight loss，%　--　3-6

PH (1% water solution)　4.0-6.0　4.0-6.0

Usage:

HEDP·Na2 is widely used in circulating cool water system, medium and low pressure boiler, oil field water pipelines as scale and corrosion inhibitor in fields such as electric power, chemical industry, metallurgy, fertilizer, etc.. In light woven industry, HEDP·Na2 is used as detergent for metal and nonmetal. In dyeing industry, HEDP·Na2 is used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, HEDP·Na2 is used as chelating agent.

Package and Storage:

For liquid: Normally In 250kg net Plastic Drum, IBC drum can also be used as required. Storage for ten months in room shady and dry place.

For solid: inner liner polyethylene (PE) bag, outer plastic woven bag, or confirmed by clients. Storage for ten months in room shady and dry place. .

Safety Protection:

Weak acidity, Avoid contact with eye and skin, once contacted, flush with water.

Keywords: HEDP·Na2 China,Disodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid(HEDP·Na2)