结晶紫内酯（CVL，CAS：1552-42-7）

本品为高纯度隐色染料，外观呈白色至微黄色结晶粉末，熔点 180–183℃，纯度≥97%。遇酸快速显色，发色稳定、色度纯正、油溶性佳，是压敏 / 热敏记录材料核心发色剂，广泛用于无碳复写纸、票据、标签、防伪油墨及温敏变色材料。产品工艺稳定、杂质低、批次一致性好，符合行业应用标准，可满足高端记录材料、智能变色与防伪标识等场景需求，支持稳定批量供应。

It is a high-purity leuco dye, appearing as white to pale yellow crystalline powder, with melting point 180–183℃ and purity ≥97%. It develops color rapidly under acidic conditions, featuring stable coloration, high chroma, and good oil solubility. As a key color former for pressure-sensitive & thermosensitive materials, it is widely used in carbonless copy paper, bills, labels, anti-counterfeiting inks, and thermochromic materials. With stable production process, low impurities, and excellent batch consistency, it complies with industrial standards. It satisfies high-end applications including recording materials, intelligent color-changing systems, and security marking, supporting stable bulk supply.