5-nitronaphthalene-1-sulphonic acid synthesis

6synthesis methods

Product Name:5-nitronaphthalene-1-sulphonic acid
CAS Number:17521-00-5
Molecular formula:C10H7NO5S
Molecular Weight:253.23

85-47-2
146 suppliers
$11.00/5g

17521-00-5
3 suppliers
inquiry

117-41-9 Synthesis

117-41-9
0 suppliers
inquiry

Yield:-

Reaction Conditions:

with nitric acid at 20 - 40; for 3 h;

Steps:

1.2 2) Nitration

After maintaining the end, stop stirring, the sulfonated material into the nitrification pot, sampling and analysis of total acidity, while open frozen salt water cooling to 20 ~ 35 , then began to increase nitric acid.Nitric acid concentration 68 ± 0.5%, acid temperature controlled at 20 ~ 40 , no more than 35 for 3 hours.After maintaining the end of sampling and analysis of the total acidity of nitro compounds and amino value, acidity control in 45 to 46% amino value is controlled ≥410g / kg, such as failure, supplemented with nitric acid, the material until qualified.

References:

CN105418464,2016,A Location in patent:Paragraph 0018; 0019; 0020; 0021

85-47-2
146 suppliers
$11.00/5g

17521-00-5
3 suppliers
inquiry

References

86-57-7 Synthesis