山东鑫泰水处理技术有限公司 羟基乙叉二膦酸 HEDP、HEDPA 中英文简介说明和解释羟基乙叉二膦酸 HEDP 中英文简介说明和解释1-Hydroxy Ethylidene-1,1-Diphosphonic Acid, HEDP【CAS】 2809-21-4别名:羟基亚乙基叉二膦酸、HEDPA、 (1-羟基亚乙基)二膦酸、 1-二磷酸、 1-羟基亚乙基-1Dequest 2010分子式: C2H8O7P2 相对分子质量:206.02结构式: HEDP 即羟基乙叉二膦酸, 化学用品,一种有机磷酸 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一、产品性能HEDP 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,尤其是与钙离子形成六圆环螯合物,因而具有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。
HEDP 固体属于高纯产品,适用于冬季严寒地区;特别适用于电子行业的清洗剂和日用化学品添加剂二、质量指标 GB/T26324-2010项 目 指 标HEDP 外 观 无色或淡黄色透明液体 白色晶状固体活性组分(以 HEDP 计)% ≥ 50.0 60.0 90.0亚磷酸(以 PO33-计)% ≤ 2.0 2.0 0.80磷酸(以 PO43-计)% ≤ 0.8 0.8 0.50山东鑫泰水处理技术有限公司 羟基乙叉二膦酸 HEDP、HEDPA 中英文简介说明和解释氯化物 (以 Cl-计)% ≤ 1.0 1.0 0.10PH 值(1%水溶液) ≤ 2.0 2.0 2.0密度(20℃)g/cm 3 ≥ 1.34 1.40 ——活性组分(以 HEDP·H2O 计) % ≥ —— —— 98.0三、应用范围与使用方法【用途一】HEDP 是锅炉和换热器的阻垢剂和缓蚀剂、无氰电镀的络合剂、皂用螯合剂、金属和非金属的清洗剂用途二】HEDP 常用作锅炉水、循环水、油田注水处理中的阻垢缓蚀剂常与聚羟酸类阻垢分散剂复配还可作无氰电镀络合剂,漂染业的固色剂,过氧化氢稳定剂用途三】HEDP 为无氰电镀的主料配制成无氰电镀铜溶液,在钠铁上直接电镀铜层结合力良好。
镀层光滑、色泽好一般用量 60%含量为 100~120 ml/L硫酸铜用量为15~20 g/L另外,在电镀前将镀件浸在本品的 1%~2%溶液中,使电镀件转为活化态,再进行电镀更能提高效果用途四】HEDP 作阻垢剂一般使用浓度 1~10mg/L,作缓蚀剂一般使用浓度10~50mg/L;作清洗剂一般使用浓度 1000~2000mg/L;通常与聚羧酸型阻垢分散剂配合使用四、包装与贮存HEDP 液体为塑料桶包装,每桶 30Kg 或 250Kg;HEDP 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,贮存期十个月五、安全防护:HEDP 为酸性,应避免与眼睛、皮肤接触,一旦溅到身上,应立即用大量的水冲洗水处理剂羟基乙叉二膦酸 HEDP 相关的内容】有机膦系列阻垢缓蚀剂相关内容羟基乙叉二膦酸 HEDP HEDPAHEDP 的钠盐 羟基乙叉二膦酸二钠 HEDPA•Na2HEDP 的钠盐 羟基乙叉二膦酸四钠 HEDP•Na4HEDP 的钾盐 羟基乙叉二膦酸钾 HEDP•KX关键字 :HEDPA 、HEDP、循环水、HEDPNa2、HEDPANa4、 HEDPAKx、阻垢剂详细资料请访问 山东鑫泰水处理技术有限公司 羟基乙叉二膦酸 HEDP、HEDPA 中英文简介说明和解释1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP)CAS No.: 2809-21-4Molecular Formula: C2H8O7P2 Molecular weight: 206.02Structural Formula:Properties:HEDP is an organophosphoric acid corrosion inhibitor. It can chelate with Fe, Cu, and Zn ions to form stable chelating compounds.It can dissolve the oxidized materials on these metals’ surfaces. HEDPshows excellent scale and corrosion inhibition effects under temperature 250℃. HEDP has good chemical stability under high pH value, hard to be hydrolyzed, and hard to be decomposed under ordinary light and heat conditions. Its acid/alkali and chlorine oxidation tolerance are better than that of other organophosphoric acids (salt). HEDP can react with metal ions in water system to form hexa-element chelating complex, with calcium ion in particular. Therefore, HEDP has good antiscale and visible threshold effects. When built together with other water treatment chemicals, it shows good synergistic effects.The solid state of HEDP is crystal powder, suitable for usage in winter and freezing districts. Because of its high purity, it can be used as cleaning agent in electronic fields and as additives in daily chemicals.Specification:items indexAppearance Clear, Colorless to pale yellow aqueous solution White crystal powderActive content (HEDP)% 58.0-62.0 90.0 minActive content (HEDP·H2O)% - 98.0 minPhosphorous acid (as PO33-)% 1.0 max 0.8 maxPhosphoric acid (asPO43- )% 0.6 max 0.5 maxChloride (as Cl-) ppm 100.0 max 50.0maxpH (1% solution) 2.0 max 2.0 maxDensity (20℃)g/cm 3 1.43-1.47 -山东鑫泰水处理技术有限公司 羟基乙叉二膦酸 HEDP、HEDPA 中英文简介说明和解释Fe,mg/L 10.0 max 5.0 maxColour APHA (Hazen) 30.0 max -Acetic acid % 0.5 max Ca sequestration (mg CaCO3/g) 500.0 min Usage:HEDP is used as scale and corrosion inhibition in circulating cool water system, oil field and low-pressure boilers in fields such as electric power, chemical industry, metallurgy, fertilizer, etc.. In light woven industry, HEDP is used as detergent for metal and nonmetal. In dyeing industry, HEDP is used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, HEDP is used as chelating agent. The dosage of 1-10mg/L is preferred as scale inhibitor, 10-50mg/L as corrosion inhibitor, and 1000-2000mg/L as detergent. Usually, HEDP is used together with polycarboxylic acid.Package and Storage:HEDP liquid: Normally In 250kg net Plastic Drum, IBC drum can also be used as required HEDP solid: 25kg 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:Acidity, Avoid contact with eye and skin, once contacted, flush with water. 欢迎下载访问 。