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SJZ Chenghui chemical co ltd
 
 
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diazotization of sulfanilic acid 

  產品分類 : 化學->化工原料

     
diazotization of sulfanilic acid
       

  產品規格
 
  Country  CN
  Brand  chenghui
  Packing  25kgs/500kgs/750kgs
  Minimum Order  5
  Payment Term  L/C,T/T,D/P

 

  產品描述
   
  <p>
<span style="font-family:Verdana;font-size:18px;">Methods of Manufacturing</span><br />
<span style="font-family:Verdana;font-size:18px;"> By heating aniline with weak fuming <strong>sulfuric acid</strong> and pouring the reaction product into water. /Monohydrate/</span><span style="font-family:Verdana;font-size:18px;">Readily prepared from aniline and <strong>sulfuric acid.</strong></span><br />
<span style="font-family:Verdana;font-size:18px;">Equimolar amounts of aniline and sulfuric acid are reacted in a lead-lined reactor. The reaction mass is spread on trays and baked in an oven at 190 - 220 deg C, the water of the reaction being removed continuously. The process is complete if a sample dissolves clearly in a dilute alkaline solution and has practically no smell of aniline. The crude product is dissolved as a sodium salt in water that has been rendered alkaline with sodium carbonate solution; traces of aniline are removed by blowing with steam. The solution is clarified by filtration and can then be processed further immediately. The baking operation can be carried out in vacuo, which facilitates the removal of the water of the reaction</span>
</p>
<p>
<span style="font-family:Verdana;font-size:18px;"><img src="http://i.bosscdn.com/product/41/68/fa/99406387426e96291f8146afba.jpg@watermark=2&color=I0ZGRkZGRg%3D%3D&type=ZHJvaWRzYW5zZmFsbGJhY2s%3D&size=25&p=9&t=80&text=Y2hlbmdodWkuYm9zc2dvby5jb20%3D" title="sulfuric acid " alt="sulfuric acid " /><br />
</span>
</p>
<p>
<span><span style="font-size:18px;line-height:27px;"></span></span>
</p>
<p style="color:#333333;text-align:justify;font-family:Arial;background-color:#FFFFFF;">
<strong><span style="font-family:Tahoma;font-size:18px;">Specs:</span></strong><span style="font-family:Tahoma;font-size:18px;">&nbsp; Appearance:Grey-white powder</span>
</p>
<p style="color:#333333;text-align:justify;font-family:Arial;background-color:#FFFFFF;">
<span style="font-family:Tahoma;font-size:18px;">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Purity: 99% min</span>
</p>
<p style="color:#333333;text-align:justify;font-family:Arial;background-color:#FFFFFF;">
<span style="font-family:Tahoma;font-size:18px;">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</span><span style="font-family:Tahoma;font-size:18px;">Content 80% Min (wet) &nbsp; 96% Min (dry)</span>
</p>
<p style="color:#333333;text-align:justify;font-family:Arial;background-color:#FFFFFF;">
<span style="font-family:Tahoma;font-size:18px;">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Insoluble 0.1% Max (wet) &nbsp;0.2% Max (dry)</span>
</p>
<p style="color:#333333;text-align:justify;font-family:Arial;background-color:#FFFFFF;">
<span style="font-family:Tahoma;font-size:18px;">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Para Cresidine &nbsp; &nbsp;&nbsp;0.02% Max (wet) &nbsp;0.02% Max (dry)</span>
</p>
<p style="color:#333333;text-align:justify;font-family:Arial;background-color:#FFFFFF;">
<span style="font-family:Tahoma;font-size:18px;"><img src="http://i.bosscdn.com/product/6e/61/4d/c8f522e557423e130374365caf.jpg@watermark=2&color=I0ZGRkZGRg%3D%3D&type=ZHJvaWRzYW5zZmFsbGJhY2s%3D&size=25&p=9&t=80&text=Y2hlbmdodWkuYm9zc2dvby5jb20%3D" title="sulfanilic acid " alt="sulfanilic acid " /><br />
</span>
</p>
<p style="color:#333333;text-align:justify;font-family:Arial;background-color:#FFFFFF;">
<strong><span style="font-family:Tahoma;font-size:18px;">Uses:</span></strong>
</p>
<p style="color:#333333;text-align:justify;font-family:Arial;background-color:#FFFFFF;">
<span style="font-family:Tahoma;font-size:18px;">1. It is one important dyes intermediates, it can be used in Acid orange ,Acid light yellow 2G,Acid intermediary yellowish brown 4G,Acid intermediary dark yellow GG, Direct yellow GR,Reactive yellow K-RN, Brilliant red K-2G, datish red K-DG and blue K-3R, etc.</span>
</p>
<p style="color:#333333;text-align:justify;font-family:Arial;background-color:#FFFFFF;">
<span style="font-family:Tahoma;font-size:18px;">&nbsp;</span>
</p>
<p style="color:#333333;text-align:justify;font-family:Arial;background-color:#FFFFFF;">
<span style="font-family:Tahoma;font-size:18px;">2. It also can be used in production of dyes Whitening agent, such as solute salt B, optical brightener BG, optical brightener BBU, dyeing proof salt H, etc.</span>
</p>
<p style="color:#333333;text-align:justify;font-family:Arial;background-color:#FFFFFF;">
<span style="font-family:Tahoma;font-size:18px;">&nbsp;</span>
</p>
<p style="color:#333333;text-align:justify;font-family:Arial;background-color:#FFFFFF;">
<span style="font-family:Tahoma;font-size:18px;">3. It is also used in agriculture pesticide to proof wheat rust.</span>
</p>
<p style="color:#333333;text-align:justify;font-family:Arial;background-color:#FFFFFF;">
<span style="font-family:Tahoma;font-size:18px;">&nbsp;</span>
</p>
<p style="color:#333333;text-align:justify;font-family:Arial;background-color:#FFFFFF;">
<span style="font-family:Tahoma;font-size:18px;">4. It is also one ideal intermediary in spices, food pigment, medicine, building materials, etc.</span>
</p>
<p style="color:#333333;text-align:justify;font-family:Arial;background-color:#FFFFFF;">
<span style="font-family:Tahoma;font-size:18px;">&nbsp;</span>
</p>
<p style="color:#333333;text-align:justify;font-family:Arial;background-color:#FFFFFF;">
<span style="font-family:Tahoma;font-size:18px;">We have been exporting this item for more than&nbsp;15 years, our main market is Europe and South America, also some quantity in Asia market.</span>
</p>
<p style="color:#333333;text-align:justify;font-family:Arial;background-color:#FFFFFF;">
<span style="font-family:Tahoma;font-size:18px;"><img src="http://i.bosscdn.com/product/4f/7f/55/aecfb87d2c9f8988ec3840d791.jpg@watermark=2&color=I0ZGRkZGRg%3D%3D&type=ZHJvaWRzYW5zZmFsbGJhY2s%3D&size=25&p=9&t=80&text=Y2hlbmdodWkuYm9zc2dvby5jb20%3D" title="sulfuric acid " alt="sulfuric acid " /><br />
</span>
</p>
<span style="font-family:Tahoma;font-size:18px;"></span><br />
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</p>chenghuichemicals.com

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