Lead Acetate, identified by CAS number 301-04-2, is a chemical compound with specific properties that make it invaluable in various analytical applications. Known commonly as Lead(II) Acetate, this substance appears as a white crystalline powder, typically with a purity of 99% or higher. Its chemical formula is C4H6O4Pb, and it possesses a melting point of approximately 75°C. Understanding these fundamental physical and chemical properties is key to appreciating its role in scientific and industrial contexts.

The most prominent chemical characteristic of Lead Acetate is its reactivity with hydrogen sulfide (H2S) and other sulfide compounds. When exposed to gases containing sulfides, the lead ions (Pb2+) in Lead Acetate react to form lead sulfide (PbS). This reaction is a precipitation reaction, where lead sulfide, a highly insoluble compound, appears as a dark brown or black precipitate. This distinct color change is the basis for its use in qualitative test papers, widely employed for detecting the presence of sulfur.

This reactivity makes Lead Acetate a crucial reagent in laboratories for a variety of tests. Its use in lead acetate test paper is widespread for detecting hydrogen sulfide in water samples or air. The sensitivity of this reaction allows for the detection of even trace amounts of sulfur, which is critical in environmental monitoring and industrial process control. For instance, in water quality testing, a positive result from lead acetate paper can indicate the need for further treatment or investigation.

As a chemical reagent, the purity of Lead Acetate is a significant factor. Manufacturers in China, such as NINGBO INNO PHARMCHEM CO.,LTD., often supply Lead Acetate with high assay values, ensuring reliable analytical outcomes. When purchasing, understanding the product's specifications, including its CAS number and physical appearance, helps in selecting the right grade for specific applications. The competitive price and support for online purchases from these suppliers further facilitate its accessibility for researchers and industrial chemists.

In summary, the chemical properties of Lead Acetate, particularly its reaction with sulfur compounds to produce a visible color change, establish it as a cornerstone reagent for qualitative analysis and detection purposes. Its consistent performance and availability as a white powder make it a staple in laboratories worldwide.