For any manufacturing process reliant on precise coloration, understanding the detailed specifications of raw materials is non-negotiable. Sulphur Black 1 (CAS 1326-82-5) is no exception. As a premier supplier and manufacturer of this vital dyestuff, we aim to provide clarity on the key parameters that define its quality and suitability for diverse industrial applications.

At the core of Sulphur Black 1's identity are its chemical name (Sulphur Black 1) and its CAS number (1326-82-5). These identifiers are crucial for accurate sourcing and regulatory compliance. The molecular formula, C6H4N2O5, and molecular weight of approximately 184.11 g/mol, provide fundamental chemical characteristics.

The appearance of Sulphur Black 1 is typically described as bright black flaky granules or powder. Variations in appearance can sometimes indicate differences in particle size distribution or processing methods, which might influence its dissolution rate and dyeing behavior. Ensuring uniformity in appearance is a good initial indicator of consistent manufacturing.

Strength is a critical specification, often denoted as a percentage (e.g., 100%, 200%, 240%). This indicates the dye's tinctorial strength relative to a standard. Higher strength generally means more color can be achieved with less product, offering better cost-efficiency. As a manufacturer, we meticulously control our production to meet precise strength standards, ensuring reliable color yield for our clients.

Purity and insolubles are key indicators of quality. Typically, the percentage of water-insoluble matter should be very low (e.g., ≤0.3% or ≤0.5%), as high levels can lead to poor dispersion, filtration issues, and uneven dyeing. Similarly, low moisture content (e.g., ≤6%) is important for product stability and accurate weighing.

The shade is also paramount. Sulphur Black 1 usually exhibits a bluish-black or reddish-black tone. Consistency in shade is vital for batch-to-batch reproducibility in manufacturing. As a supplier, we provide samples that closely match our standard shades, allowing clients to evaluate color accuracy before placing bulk orders.

Application-specific properties, such as solubility in sodium sulfide solution (which should be good, resulting in a green-black color) and pH range of effective dyeing (typically alkaline), are also important considerations. Understanding these properties helps optimize the dyeing process.

For manufacturers and industrial users, partnering with a reputable supplier like us is essential. We ensure our Sulphur Black 1 meets rigorous quality standards, offering competitive pricing and reliable supply. By prioritizing these specifications when you buy Sulphur Black 1, you guarantee the quality and consistency of your final products. Reach out to us for detailed specifications and to discuss your sourcing needs.