词条 | PAA(S) |
释义 | 聚丙烯酸 PAA(S) Polyacrylic Acid 【CAS】 9003-01-4 结构式: 一、产品性能 PAA(S)无毒,易溶于水,可在碱性和中等倍数条件下运行而不结垢。PAA(S)能将碳酸钙、硫酸钙等盐类的微晶或泥沙分散于水中不沉淀,达到阻垢目的;PAA(S)是一种常用的分散剂,除用于循环冷却水系统作阻垢分散剂使用外,还广泛应用于造纸和纺织、印染、陶瓷、涂料等行业。 二、质量指标 GB /T10533—2000 (HG/T2838-1997) 项 目 指 标 名 称 PAA PAAS 外 观 无色或黄色 透明液体 固体含量 % ≥ 30.0 30.0 游离单体(以CH2=CH-COOH计) % ≤ 0.50 0.50 密度(20℃)g/cm≥ 1.09 1.15 PH ≤3.0(1%水溶液) 6—8(原液) 极限粘度(30℃)dl/g 0.06~0.10 ——注:本厂还可提供40%,50%的聚丙烯酸(钠)供客户选购。 三、应用范围与使用方法 PAA(S)常与其他水处理剂组成配方使用,用作电厂、化工厂、化肥厂、炼油厂和空调系统等循环冷却水系统中的阻垢分散剂。具体配方及用量根据现场水质及设备材质情况由试验而定。单独使用,一般使用浓度为1~15mg/L。 四、包装与储存 PAA(S)塑料桶包装,每桶25kg或200kg。贮于室内阴凉处,贮存期为十个月。 五、安全与防护 PAA(S)对眼和皮肤有刺激作用,但无急性毒性。 ------------------------------------------------------------------------------------------------- Polyacrylic Acid Sodium (PAAS) 【CAS】 9003-04-7 Properties: PAAS is innoxious and soluble in water, it can be used in situations of alkaline and high concentration without scale sediment. PAAS can disperse the microcrystals or microsand of calcium carbonate, calcium phosphate and calcium sulfate. PAAS is used as scale inhibition and dispersant for circulating cool water system, papermaking, weave, dyeing, ceramic, painting, etc. Specification: items index Appearance Colorless or light yellow transparent liquid Solid content % 30 min Free monomer (CH2=CH-COOH) % 0.5 max Density (20℃)g/cm 1.15 min pH(1% solution) 6.0~8.0 Notes: Solid content 40%, 45% and 50% are also available Usage: PAAS can be used as scale inhibitor and dispersant in circulating cool water systems in power plants, iron & steel factories, chemical fertilizer plants, refineries and air conditioning systems. Dosage should be in accordance with water quality and equipment materials. When used alone, 2-15mg/L is preferred. When used as dispersant, the dosage should be determined by experiment. Package and Storage: 25kg or 200kg in plastic barrel. Storage for ten months in room shady and dry place. Keywords: PAAS China,Polyacrylic Acid Sodium (PAAS) |
随便看 |
百科全书收录4421916条中文百科知识,基本涵盖了大多数领域的百科知识,是一部内容开放、自由的电子版百科全书。