Description

Nitrous Acid CAS NO 7782-77-6 is a reactive, weak inorganic acid that serves as a key intermediate and nitrosating agent in chemical synthesis. Its primary commercial value lies in its ability to facilitate diazotization reactions, which are fundamental for producing a wide range of valuable compounds, including dyes, pharmaceuticals, and agrochemicals. This product is essential for R&D laboratories and industrial manufacturers in the fine chemical, pharmaceutical, and specialty chemical sectors seeking reliable and high-purity intermediates.

Application

• Diazotization Agent: A critical reagent for the preparation of diazonium salts, which are precursors to azo dyes and pigments.
• Pharmaceutical Intermediate: Used in the synthesis of various active pharmaceutical ingredients (APIs) through nitrosation and diazotization steps.
• Organic Synthesis: Employed as a nitrosating agent to introduce nitroso groups into organic molecules for research and production.
• Agrochemical Production: Utilized in the manufacturing of certain herbicides, fungicides, and other crop protection agents.
• Corrosion Inhibitor Formulation: Acts as a component in specific formulations designed to protect metals.
• Laboratory Research & Analysis: Serves as a standard or reagent in analytical chemistry and academic research.

Basic Information

Product Name	Nitrous Acid
CAS No.	7782-77-6
Molecular Formula	HNO₂
Molecular Weight	47.01 g/mol
Synonyms	Nitrous Acid; Dioxonitric Acid; HNO₂; Hydrogen Nitrite; Kyselina Dusite; Azotige Saeure; Acide Nitreux
EINECS	231-963-7

Quality Control

Our Nitrous Acid is produced and handled under strict quality management protocols to ensure batch-to-batch consistency and reliability. We provide comprehensive Certificates of Analysis (COA) for each lot, detailing key parameters such as assay purity and identification. While typically supplied as a solution due to its instability in pure form, specifications can be tailored to meet the rigorous demands of GMP and ISO guided processes for pharmaceutical and industrial applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area away from heat and incompatible materials. Due to its nature as an easily oxidized compound, it is recommended to store under an inert atmosphere when applicable and for prolonged periods. Keep container tightly sealed when not in use to minimize decomposition.

Specification

Item	Specification
Appearance (Solution)	Colorless to pale blue solution
Identification (IR)	Conforms
Assay (HNO₂)	Contact for details
pH	Contact for details

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.