For professionals in chemical industries, a thorough understanding of a compound's specifications is vital for successful application and process design. Phenoxazine, identified by its CAS number 135-67-1, possesses a unique set of chemical and physical properties that dictate its utility. This article delves into these critical aspects, providing essential data for formulators and researchers alike.

Phenoxazine presents itself as a fine crystalline powder with a distinct gray to green-gray hue. Its molecular formula, C12H9NO, and molecular weight of 183.21 g/mol, along with an EINECS number of 205-210-8, are standard identifiers for this chemical. A key characteristic is its melting point, which falls within the range of 156-159 °C, indicating its solid state under typical ambient conditions. This defined melting point is crucial for processes involving heating or blending.

Solubility is another paramount property. Phenoxazine is described as freely soluble in benzene and soluble in methanol, which are common organic solvents used in synthesis and formulation. However, it is notably insoluble in water. This differential solubility profile is important when considering reaction media, purification methods, and its compatibility with aqueous-based systems. The compound is also recognized for its UV absorbing capabilities, an attribute that expands its application scope.

By understanding these CAS 135-67-1 properties, such as its solubility and melting point, industry professionals can make informed decisions regarding the use of Phenoxazine as a UV absorber or as a fine chemical intermediate in their respective fields. This detailed look at its specifications emphasizes Phenoxazine's value as a reliable and versatile chemical compound.