Thiourea, identified by CAS No. 62-56-6, is a fundamental organosulfur compound with the chemical formula CH4N2S. It presents as a white crystalline powder, valued across numerous industrial sectors for its unique chemical properties. Structurally, thiourea bears a resemblance to urea, differing only in the replacement of the oxygen atom with a sulfur atom. Despite this seemingly minor difference, the chemical behavior and applications of thiourea diverge significantly from those of urea, highlighting the critical role of the sulfur atom in its reactivity.

This versatile compound serves as a vital intermediate and reagent in various chemical processes. Its primary commercial application is in the production of flame retardant resins, where it contributes essential properties that enhance material safety, particularly in materials used in construction and electronics. Beyond this, thiourea is extensively utilized in organic synthesis as a building block or catalyst due to its nucleophilic sulfur atom and reducing capabilities, participating in reactions like the Pummerer rearrangement and the production of various heterocyclic compounds.

Detailed analysis confirms the high purity typically expected for industrial applications, with standard specifications showing Thiourea content at or above 99%. Other key parameters include minimal water-insoluble substance content (often less than 0.02%), low thiocyanate levels (typically less than 0.02%), controlled heating loss (usually around 0.2%), and negligible ash content (typically less than 0.04%). These specifications are crucial for ensuring consistent performance in sensitive applications where impurities can adversely affect the final product or process efficiency.

The utility of Thiourea (CAS 62-56-6) extends far beyond flame retardants and basic organic synthesis. In the field of photography, it is used in toning baths to alter the color of silver images and as a component in some fixing baths. The textile industry employs thiourea in dyeing auxiliaries and printing pastes, acting as a reducing agent or stabilizing agent for certain dyes. Metal processing industries utilize it in electroplating baths for achieving bright finish deposits (particularly of silver, gold, and copper) and for metal passivation due to its ability to form stable complexes with metal ions, preventing corrosion on metal surfaces.

Furthermore, thiourea finds significant application in the production of agricultural chemicals, including herbicides and pesticides, and is an important intermediate in the synthesis of certain pharmaceutical compounds, such as sulfathiazole and other sulfur-containing drugs. Its role as a source of reactive sulfide ions also makes it valuable in precipitating heavy metals from industrial wastewater, contributing to environmental remediation efforts.

Physicochemical properties such as its density of approximately 1.405 g/ml at 20°C, its melting point around 175-178°C, and its solubility profile are critical considerations for its industrial handling, storage, and formulation across various chemical processes. Thiourea is readily soluble in water and also soluble in polar solvents like ethanol, facilitating its use in diverse reaction systems and aqueous or alcoholic formulations.

Handling and storage of Thiourea 99% white crystal require strict adherence to standard chemical safety practices to ensure personnel safety and maintain product integrity. Thiourea should be stored in a cool, dry place, in tightly sealed containers, away from strong oxidizing agents, strong acids, strong bases, strong light, and heat sources to maintain its stability and prevent degradation or hazardous reactions. As with many fine chemicals, proper ventilation and the use of appropriate personal protective equipment, such as chemical-resistant gloves, eye protection, and protective clothing, are highly recommended during handling operations to minimize exposure.

The standard packaging for high-purity Thiourea 99% white crystal is typically 25kg net weight bags, often constructed from durable materials like woven polypropylene with an inner polyethylene liner. This packaging is designed to protect the product from moisture, contamination, and physical damage during transit and storage. While 25kg bags are common for ease of handling and shipping, customized packaging options, including different bag sizes, bulk containers, or supersacks (FIBCs), are often available to meet specific customer requirements, logistical considerations, and usage patterns. Efficient logistics and transport protocols, compliant with relevant regulations for chemical substances, are implemented to ensure the safe and timely delivery of the product to destinations worldwide, maintaining its quality upon arrival.

Maintaining exceptionally high quality standards is paramount for a critical raw material like Thiourea, which serves as an essential input for a wide range of industrial products and processes where purity and consistency directly impact the performance and quality of the final goods. Strict quality control measures are implemented at every stage of the production process, from raw material sourcing to final packaging. Comprehensive testing of each production batch is conducted using validated analytical methods, such as high-performance liquid chromatography (HPLC) or titration, to ensure the product consistently meets or exceeds the required purity and specifications for its diverse industrial uses. This unwavering commitment to quality ensures reliable performance and predictable outcomes in customer applications, fostering trust and long-term partnerships. Reliability in supply is equally important as product quality for industries depending on consistent access to this essential chemical compound for their continuous manufacturing operations.

Industries worldwide rely on a steady and dependable supply of high-quality Thiourea (CAS 62-56-6). As a leading manufacturer and supplier in the chemical industry, NINGBO INNO PHARMCHEM CO.,LTD. is committed to providing premium grade Thiourea 99% white crystal. Our extensive experience in chemical synthesis and distribution, combined with stringent quality control processes and a robust global supply chain infrastructure, enable us to ensure consistent product availability and timely, secure delivery to customers across various industrial sectors globally. For detailed information regarding price, comprehensive technical specifications, availability, lead times, sample requests, or to initiate a buy or purchase order for Thiourea 99% in bulk or smaller quantities, please contact our dedicated sales team. We are equipped to offer competitive pricing structures and flexible terms tailored to meet the specific needs and operational requirements of businesses worldwide requiring reliable access to this essential and versatile chemical compound for their production processes.