NC一206(ZFl31NC) 2-磷酸丁烷一1,2,4一三羧酸(PBTCA)

    2—Phosphonobutane—1,2,4—tricarboxylic acid

    目前在美国和欧洲循环冷却水系统内作为主要应用的水处理剂中部含有PBTCA，例如Nalco公司的N-7354，Ciba-Geigy公司的DP-3094，日本粟田公司的S-1050，片山公司的HP-1000E等。

●(1) 分子量和化学结构式：Molecular Weight & Chemical Structure

C7HllO9P000   270       P O3H2    
            |      
        C H2- C - CH2 - C H2
        |   |   |  
        C OOH C OOH C OOH

                            ●(2) 性能：Properties

 它具有磷酸又有羧酸基的结构特性，导致良好的缓蚀阻垢性能，与常用的有机磷酸(HEDP、ATMP、EDTMP)相比，具有卓越的特性，同时在高温阻垢性能远远优于有机磷酸，能提高锌的溶解度，甚至在pH为9.5时也能使锌处于溶解状态。

It has the structure feature of both phospho acid and carboxglic acid group，thus enabling its    antiscaling corrosion properties much salt factory．When compared with the usually-applied    organic phospho acid(HEDP，ATMP，EDTMP)，it has the obvious excellent features．Moreover，its property of antiscaling in high temperature is fairly superior to the organic phospho acid，and it    can improve the solubility of zinc，what’s more，it can even dissolve the zine when the pH parameter indicates 9.5．

●(3) 规格：Specification

外    观  Appearance

黄棕色透明液体Clear yellow to amber solution

活性组份（PBTCA）含量Active content

50±1%

亚磷酸（以PO3计）含量Phosphorous (as PO33-)

≤0.5%

正磷酸（以PO4计）含量Phosphate (as PO43-)

≤0.4%

pH（1%水溶液）(1%  water solution)

≤2

密  度Density(20℃ g/cm3)

1.26~1.30

铁Iron

≤5ppm

经31P—NMP（31P磷核磁共振）检验，图谱含量基本与德国拜耳（Bayer）化学公司Bayhibit AM相符。

After detected with 3lP—NMP，It is concluded that this NC-206 has the content of more than 86％

● (4) 用途：Use

本品与锌复配后加入到冷却水中，可提高配方缓蚀性能和在碱性系统中的阻垢能力。一般投加量为5—15ppm，采用连续投加为宜。

 When complexed with zinc and put into the cooling water complex formula this product can

improvel the antisealing properties of the formula and the anti-corrosion properties in the base    systems. The application is preferred．

●(5)包装和储存：Package＆Storage

 25Kg或200Kg塑料桶装，储存期为二年。

 25Kg or 200Kg in plastic drums，storage two years．