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Basic information of nitrosyl sulfuric acid
CAS | 7782-78-7 | Molecular formula | HNO5S |
Specifications | Sulfuric acid solution with content of 40-42% | Molecular weight | 127.08 |
Appearance | Pale yellow liquid | Melting point | -10℃ |
Refractive index | 1.528 | Density | 190G/ML at 25℃ |
Dangerous goods Code | 81012 | UN Code | 2308 |
Application of nitrosyl sulfuric acid
1. It is mainly used to substitute sodium nitrite in the diazo reaction of disperse dyes, so as to reduce the cost and improve the product quality;
2. Nitrosate, preparation of solid nitrogen salt, cyclic acid amine, etc.
Advantages of nitrosyl sulfuric acid
(1) It is easy to be used in the operation where there is no sodium bisulfate and the amount of sulfuric acid is relatively reduced;
(2) Reduce the consumption of sulfuric acid;
(3) No inorganic salt is produced;
(4) For diazotization, the content of nitrosyl sulfuric acid is greatly increased;
(5) The amount of "three wastes" has been greatly reduced
Manufacturing
