Anhui Haihui Chemical Co., Ltd.--Nitrosyl sulfuric acid

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Nitrosyl sulfuric acid

Nitrosulfuric acid quality index

Item	Technical indicators
Appearance	Colorless or pale yellow liquid
Nitrosulfuric acid，W%≥	40.0
Nitric acid，W%≤	0.2
Total acidity（H₂S〇₄）	Negotiation between supply and demand
Density	1.612g/ml at25°C
Melting point	-10°C
Refractive index	1.528

Introduction to Nitrosulfuric Acid

Nitrosulfuric acid is a sulfur oxyacid with the chemical formula NOHSO₄. It is used in chemical reactions to provide NO+ ions. It can also be seen as a mixed anhydride of sulfuric acid and nitrous acid. NOHSO₄ is used in organic chemistry to prepare diazonium salts from amines. A typical method is to dissolve sodium nitrite with concentrated sulfuric acid in an ice bath. Other reagents capable of extracting NO groups include nitrosyl fluoroborate ([NO]BF₄) and nitrosyl chloride.

Nitrosulfuric acid uses

1. Mainly used to replace sodium nitrite in the diazo reaction of disperse dyes, thereby reducing costs and improving product quality
2. Nitrosating agent, making solid diazonium salt, cyclic acid amine, etc.

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