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【Product Description】 Optical brightener VBL-100F is suitable for whitening fiber fabrics, paper or fiber glue. Due to its ability to firmly adhere to the surface of fibers, it whitens cotton fabrics and increases the brightness of light colored or masked printed fabrics. Especially when dyeing and whitening fabrics, the effect is significant. This product is easily soluble in water and does not fade easily when exposed to chlorides, peroxides, and light 【Product Characteristics】 Appearance: Light yellow powder Ionicity: Anionic Ph value: 4.0-6.0 (1% aqueous solution) Solubility: easily soluble in water |