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Chemical Structure| 90-20-0 Chemical Structure| 90-20-0

Structure of 90-20-0

Chemical Structure| 90-20-0

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Product Details of [ 90-20-0 ]

CAS No. :90-20-0
Formula : C10H9NO7S2
M.W : 319.31
SMILES Code : O=S(C1=CC(N)=C2C(O)=CC(S(=O)(O)=O)=CC2=C1)(O)=O
MDL No. :MFCD00035728
InChI Key :APRRQJCCBSJQOQ-UHFFFAOYSA-N
Pubchem ID :7009

Safety of [ 90-20-0 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H315-H319-H335
Precautionary Statements:P261-P280-P301+P312-P302+P352-P305+P351+P338

Application In Synthesis of [ 90-20-0 ]

* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

  • Downstream synthetic route of [ 90-20-0 ]

[ 90-20-0 ] Synthesis Path-Downstream   1~5

  • 2
  • [ 90-20-0 ]
  • diluted alkaline solution [ No CAS ]
  • [ 148-25-4 ]
  • 3
  • [ 110-91-8 ]
  • [ 90-20-0 ]
  • [ 112291-51-7 ]
  • [ 81-16-3 ]
YieldReaction ConditionsOperation in experiment
With sodium carbonate; In water; EXAMPLE 1 31.9 g of 1-hydroxy-8-aminonaphthalene-3,6-disulphonic acid are dissolved in 400 ml of water under neutral conditions. At 0 to 5 C., 8.8 ml of trifluorotriazine are added, and the pH is maintained at 4.0 to 4.5 by adding 20% strength sodium carbonate solution. After 5 minutes, 9 g of morpholine are added, and the pH is maintained at 7 using 20% strength sodium carbonate solution. After 15 minutes at 10 C., the reaction is complete. The solution thus obtained of the compound of the formula STR9 is further reacted as follows: A diazonium salt suspension obtained by diazotisation of 22.3 g of 2-aminonaphthalene-1-sulphonic acid prepared in the usual manner is added to the reaction product obtained at 0 to 5 C.
  • 4
  • 1-aminonaphthalene-3,6,8-trisulphonic acid trisodium salt [ No CAS ]
  • [ 148-25-4 ]
  • [ 90-20-0 ]
  • C10H9NO7S2 [ No CAS ]
YieldReaction ConditionsOperation in experiment
As the preferredembodiment, the said step 70) specifically includes: preheat concentratedliquid caustic soda through a heat exchanger to 180. Then, feed into the alkali-fusion kettle.Respectively preheat methanol and concentrated amino T acid solution beforepumping them into the alkali-fusion kettle.React the caustic soda, methanol and amino T acid solution at 200 and2.8 MPa. After the reaction is complete,pass the material through a dilution kettle and add water to dilute. Obtain dilute methanol and dlutedalkali-fused compound; Condense throughdistillation to recover dilute methanol, and recover residual methanol from thediluted alkali-fused compound by making it pass through a strippingcolumn; Send dilute methanol to themethanol distillation section to recover methanol, and the recovered methanolis used for the alkali-fusion reaction;feed diluted alkali-fused compound into a buffer tank. In this step, thedilute methanol obtained after the reaction undergoes recovery. And therecovered dilute methanol is to be used again for the alkali-fusionreaction. Recycling the methanolsolution greatly reduces the amount of methanol required for the production ofH-acid and thus it helps reduce costs. As the preferredembodiment, the said step 80) specifically includes: Undergoing acidtreatment: cool the dilute methanol obtained from step 40) and the 98%concentrated sulfuric acid mixture to formulate the set concentration of thesulfuric acid, and send to the second dilute sulfuric acid buffer tank; Undergoing isolation:send the diluted alkali-fused compound of step 70), the H-acid filtrate and thedilute sulfuric acid from the second dilute sulfuric acid buffer tank into theisolation kettle and undergo isolation.After cooling the produced sulfur dioxide, undergo liquefactionrecovery. Undergoing cooling andfiltration: the isolated material goesthrough a cooling kettle to be cooled to 50.use a filter equipment to filter, wash with water. Obtain H-acid filtercake, filtrate and the mother liquor.Store filtrate in a filtrate tank to be used again for isolation; send the mother liquor to a wastewatertreatment system.
  • 5
  • [ 91-20-3 ]
  • [ 148-25-4 ]
  • [ 90-20-0 ]
  • C10H9NO7S2 [ No CAS ]
 

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