For professionals in the chemical and pharmaceutical industries, a thorough understanding of a compound's physical and chemical properties is fundamental to its successful application. Trimethyl-p-quinone (CAS 935-92-2), a key intermediate, particularly in the synthesis of Vitamin E acetate, possesses specific characteristics that dictate its handling, storage, and performance in various chemical processes. This article aims to provide insights into these properties, guiding procurement managers and R&D scientists when they seek to buy this compound from a reputable manufacturer.

Appearance and Physical State

Trimethyl-p-quinone is typically described as yellow crystals. This distinct color is a visual indicator of its identity and purity. The crystalline form suggests it is a solid at room temperature, which influences how it is packaged, transported, and measured for reactions. For any chemical supplier, providing material that consistently matches this visual description is the first step in assuring quality.

Solubility Profile: A Key Factor in Processing

The solubility of Trimethyl-p-quinone plays a crucial role in its application as a chemical intermediate. It is noted as being slightly soluble in water, which means it will not readily dissolve in aqueous solutions. However, it is easily soluble in ethyl ester and methanol. This solubility in common organic solvents makes it compatible with a wide range of reaction media, facilitating its use in various synthetic pathways. When considering a purchase, understanding the solvent systems compatible with Trimethyl-p-quinone will be essential for process optimization.

Purity and Quality Standards

The specified purity of ≥ 98% for Trimethyl-p-quinone is a critical metric. In pharmaceutical and fine chemical synthesis, impurities can significantly affect reaction yields, product quality, and downstream applications. Reputable manufacturers adhere to international quality standards, such as USP (United States Pharmacopeia), BP (British Pharmacopoeia), and FCC (Food Chemicals Codex), to ensure their products meet these stringent requirements. When you purchase from a trusted manufacturer in China or elsewhere, always verify that the product meets these benchmarks.

Melting Point and Stability

The reported melting point of 32 ºC for Trimethyl-p-quinone provides further information about its physical state and purity. While specific stability data might require detailed datasheets, compounds with a defined melting point generally indicate a relatively pure crystalline substance. Proper storage, as recommended by the supplier, is essential to maintain its integrity and prevent degradation, ensuring its effectiveness as a precursor.

Why These Properties Matter to Buyers

For procurement professionals and research scientists, these properties directly impact several key decisions:

  • Process Design: Solubility dictates solvent choice and reaction conditions.
  • Quality Control: Visual appearance and purity percentages are primary indicators of material quality.
  • Cost-Effectiveness: High purity often translates to better yields and less waste, making the price per effective unit more competitive.
  • Supplier Selection: A supplier that clearly articulates these properties and provides reliable material is a valuable partner.

Understanding these fundamental properties of Trimethyl-p-quinone is vital for anyone looking to utilize it effectively in their chemical processes. Engaging with a knowledgeable manufacturer and supplier who can provide comprehensive technical information is the best approach to ensure successful sourcing and application.