Understanding the fundamental properties and synthesis of a chemical compound is crucial for its effective utilization. NINGBO INNO PHARMCHEM CO.,LTD. frequently explores the intricate chemistry of 4-Nitrophenol, a compound that holds significant importance across various industrial applications.

4-Nitrophenol, scientifically known as p-Nitrophenol or 4-Hydroxynitrobenzene, is a phenolic compound characterized by a hydroxyl group and a nitro group positioned opposite each other on a benzene ring. This specific arrangement imparts unique chemical properties. One notable characteristic is its existence in two polymorphic forms: the alpha-form, which is colorless and unstable at room temperature, and the beta-form, which appears as yellow crystals and is stable at room temperature. Typically, 4-Nitrophenol is encountered as a mixture of these two forms.

The compound also functions as a pH indicator, exhibiting a distinct color change from colorless or pale yellow to a bright yellow at pH levels exceeding 6. This property makes it a valuable tool in laboratory settings for monitoring reaction conditions and determining acidity levels. The ability to buy 4-Nitrophenol for these analytical purposes is widely supported by numerous chemical suppliers.

The synthesis of 4-Nitrophenol often involves the nitration of phenol. This process requires careful control of reaction conditions to ensure the desired para-substitution and minimize the formation of ortho-nitrophenol. Understanding the various 4-Nitrophenol manufacturers and their preferred synthesis routes can provide insights into product purity and yield. For businesses looking to buy p-Nitrophenol, researching these methods is often a prerequisite for selecting a reliable supplier.

The purity standard for 4-Nitrophenol can vary, with common grades being 92% and higher purity grades, such as 99% (Capacitor Grade), which are suitable for more sensitive applications. The specification of CAS 100-02-7 product details often includes parameters like assay percentage, water content, and the presence of impurities such as o-Nitrophenol (ONP) and p-Nitrochlorobenzene (PNCB).

NINGBO INNO PHARMCHEM CO.,LTD. highlights that effective handling and storage are also key considerations for 4-Nitrophenol. It is classified as a Dangerous Good for transport (UN 1663, Class 6.1, Packing group III), requiring specific safety protocols. Detailed information can be found in the Material Safety Data Sheet (MSDS) provided by manufacturers and suppliers.

In essence, the chemical understanding of 4-Nitrophenol – its dual polymorphic forms, its utility as a pH indicator, and the methods of its synthesis – forms the basis for its widespread application. NINGBO INNO PHARMCHEM CO.,LTD. is dedicated to providing insights into these chemical aspects, supporting clients in their procurement and application of this vital compound.