In the competitive world of paper manufacturing, achieving exceptional whiteness and brightness is paramount for product appeal and market distinction. At NINGBO INNO PHARMCHEM CO.,LTD., we are proud to present Optical Brightener APC, a cutting-edge fluorescent whitening agent specifically designed to elevate the aesthetic quality of paper products. This innovative chemical compound, identified by CAS No. 16470-24-9 and the molecular formula C40H40N12O16S4Na4, acts as a powerful optical solution to enhance the perceived whiteness and brilliance of various paper grades.

Optical Brightener APC operates on the principle of fluorescence. Unlike traditional bleaching agents that merely remove yellowness by chemical reaction, optical brighteners absorb invisible ultraviolet (UV) light and re-emit it in the visible blue region of the spectrum. This emitted blue light effectively compensates for the natural yellowing of paper fibers, creating a vibrant, 'whiter-than-white' appearance that is highly sought after by consumers. Our Optical Brightener APC is meticulously engineered to meet stringent quality standards, including HG/T 3727-2003, ensuring consistent and reliable performance.

The technical specifications of Optical Brightener APC underscore its superior characteristics. It presents as an amber transparent liquid with a fluorescent intensity equivalent to a standard sample of 35 Whiteness (WCIE) ≥ -3. Its viscosity at 25ºC is impressively low at ≤ 50 mPa.s, making it highly manageable in various production setups. With a pH value ranging from 8-10 and a density of 1.1-1.2 g/cm3, this anionic compound is engineered for optimal compatibility and performance in diverse paper manufacturing environments. The maximum UV absorption wavelength is precisely at 350 nm, ensuring efficient conversion of UV light into visible blue luminescence.

What truly sets Optical Brightener APC apart are its exceptional properties. It is incredibly easy to use, readily mixing with water at any ratio, which makes it ideal for automated dosing systems in large-scale operations. A significant advantage is its excellent acid-resistance, providing a superior whitening effect even in low pH solutions, a common challenge in paper processing. Furthermore, leveraging advanced nanofiltration membrane technology, Optical Brightener APC boasts low salinity and enhanced storage stability under normal temperatures, minimizing product degradation and extending shelf life. Compared to other brightening agents, it exhibits superior sunlight fastness and alkaline-resistance, contributing to the longevity of the paper's whiteness. Its stability is remarkable; it remains stable above 0ºC and, if cooled below -3ºC, can be heated and dissolved again without any loss of performance.

Optical Brightener APC finds versatile application across key stages of paper production. It is highly effective as a fluorescent whitening agent for paper pulp bleaching, ensuring a foundational level of brightness before further processing. It also plays a crucial role in the surface gluing process, where it enhances the whiteness and visual appeal of the paper surface. Moreover, its integration into the coating process allows for the creation of high-brightness papers with an exquisite finish, making products stand out with unmatched clarity and vibrancy.

Choosing the right optical brightener is a critical decision for paper manufacturers aiming for excellence. NINGBO INNO PHARMCHEM CO.,LTD. is a dedicated *manufacturer* and *supplier* of high-quality chemical solutions, committed to providing products that meet the highest industry standards. We offer competitive *price* options and efficient supply chain management to facilitate your *purchase*. For those looking to *buy* a reliable, high-performance optical brightener, Optical Brightener APC represents an intelligent *investment* in enhancing product quality and market competitiveness. Contact us to learn more about how our products can revolutionize your paper production process.