For professionals working with chemical intermediates, a thorough understanding of their properties and safe handling practices is crucial for operational success and safety. m-Phenylenediamine (CAS 108-45-2) is a versatile aromatic diamine used across various industries, and comprehending its chemical nature is paramount. As a leading supplier of this chemical, we provide essential information regarding its properties and handling.

m-Phenylenediamine, with the molecular formula C6H8N2, is an organic compound featuring two amine groups attached to a benzene ring at the meta positions. Its chemical reactivity stems from these amine groups, which can undergo various reactions, including acylation, alkylation, and condensation. Its melting point typically falls within the range of 64-66 °C, and it has a boiling point of approximately 282-284 °C.

A notable characteristic of m-Phenylenediamine is its sensitivity to air and light. Upon exposure, it can oxidize and turn reddish or purplish, a common trait for aromatic amines. This necessitates careful storage in cool, dry, well-ventilated areas, away from direct sunlight and incompatible materials. Storing it under an inert atmosphere, such as argon, can help maintain its purity and prevent degradation, especially for high-purity grades used in sensitive applications like electronics or advanced polymer synthesis.

In terms of solubility, m-Phenylenediamine is soluble in water, ethanol, and acetone, which facilitates its use in various liquid-phase reactions and formulations. Its pKa values indicate its basic nature, allowing it to react with acids to form salts.

Safety is a paramount concern when handling any chemical, and m-Phenylenediamine is no exception. It is classified as toxic by ingestion, inhalation, and skin absorption. It can also cause skin irritation and allergic reactions, and eye irritation. Therefore, appropriate personal protective equipment (PPE) is essential. This includes chemical-resistant gloves, safety goggles or a face shield, and protective clothing. Working in a well-ventilated area or using local exhaust ventilation is crucial to minimize inhalation exposure.

Incompatible materials for m-Phenylenediamine include strong oxidizing agents, acids, acid chlorides, and acid anhydrides. Contact with these substances can lead to exothermic reactions or potential hazards. As a combustible solid, it should also be kept away from open flames and excessive heat. Proper waste disposal procedures should be followed, typically involving controlled incineration with appropriate emission controls.

For procurement managers and R&D scientists, understanding these properties is vital for safe storage, handling, and effective application of m-Phenylenediamine. By partnering with a reliable supplier that provides clear safety data and handling recommendations, you can ensure both operational efficiency and workplace safety when utilizing this important chemical intermediate.