For B2B buyers in the chemical industry, a thorough understanding of product specifications is critical for making informed purchasing decisions. 4-Chloro-2-Nitrophenol (CAS 89-64-5) is a compound with specific technical requirements depending on its intended application, whether it's as a dye intermediate, in agrochemical synthesis, or pharmaceutical manufacturing. This article provides a detailed look at the key technical specifications that industrial buyers should consider when sourcing this chemical.

Chemical Identity and Basic Properties

The compound is known chemically as 4-Chloro-2-Nitrophenol, with the CAS Registry Number 89-64-5. Its molecular formula is C6H4ClNO3, and its molecular weight is approximately 173.55 g/mol. Understanding these fundamental identifiers is the first step in any procurement process.

Key Quality Parameters for 4-Chloro-2-Nitrophenol

When sourcing 4-Chloro-2-Nitrophenol, buyers should pay close attention to the following technical specifications, often provided by manufacturers:

• Assay/Purity: This is perhaps the most critical specification. For most industrial applications, a purity of ≥99% is standard. Some suppliers may offer higher purities or specify different grades based on application needs. Manufacturers often list this as Assay: ≥99% or Purity: ≥99.0%.
• Appearance: The physical form and color are important visual indicators of quality. 4-Chloro-2-Nitrophenol is typically described as a yellow prismatic crystal or a yellow crystalline powder. Slight variations in color, from light yellow to deeper yellow or even slightly orange, can occur but should be within acceptable ranges specified by the supplier.
• Melting Point: This property is a direct indicator of purity. The typical melting point range for high-quality 4-Chloro-2-Nitrophenol is 88-89°C (or a narrow range like 88~89°C, 85-87°C, or 88-90°C). Significant deviations from this range can suggest impurities or incorrect product identity.
• Moisture Content: For many chemical reactions, excessive moisture can be detrimental. Standard specifications usually limit moisture content to ≤0.5% or less than 2%.

Standard Adherence and Documentation

Reputable manufacturers will often state adherence to international quality standards such as USP (United States Pharmacopeia), BP (British Pharmacopoeia), or EP (European Pharmacopoeia), especially if the product is intended for pharmaceutical applications. When you buy 4-Chloro-2-Nitrophenol, always request:

• Certificate of Analysis (COA): This document confirms that a specific batch meets the stated specifications.
• Safety Data Sheet (SDS): Essential for understanding handling, safety precautions, and emergency procedures.
• Technical Data Sheet (TDS): Provides a more in-depth overview of the product's properties and potential uses.

Choosing a Manufacturer and Getting a Quote

When looking to purchase 4-Chloro-2-Nitrophenol, buyers should consider manufacturers with robust quality control systems. Sourcing from established chemical suppliers in China can offer competitive pricing for bulk orders. To get accurate pricing, contact the sales department and request a quote, specifying your required quantity and any particular quality parameters. Understanding these technical details ensures that you source the correct, high-quality intermediate for your industrial needs.