Optical Brightener SWN also named Optical Brightener MDAC，it is a kind of optical brightener is a niche product，its melting point is abot 71℃ and mostly usde for PVC plastics, wool, natural silk and acrylic, nylon (polyamide), and also used in the whitening of washing powder.
Structure type: Coumarins (C.I.140)
Appearance: white crystalline powder
Content: ≥ 99%
Melting point: 68-73 ℃
Physical and chemical properties:
1 . This product has wide applicability, high whiteness, soluble in organic solvents such as ethanol, but insoluble in water;
2 . This product has the characteristics of compatibility and strong applicability.
Scope of application:
Mainly used in the whitening of soft and hard PVC plastics, wool, natural silk and acrylic, nylon (polyamide), and also used in the whitening of washing powder; this product is also a common laser dye.
1. Application to plastics: The amount of SWN/MDAC is generally 0.01-0.06%, and it can be mixed evenly with the corresponding processed plastics.
2. When used for wool, natural silk and acrylic, it is generally used in liquid state:
SWN/MDAC dosage: wool: 0.05-0.35%;
natural silk: 0.05-0.4%;
acrylic fiber: 0.05-0.8%
3. This product can also be added as a brightener to detergents and washing powders, with a dosage of 0.001-0.005%.
Packaging and storage：
25kg cardboard drum lined with plastic bag, storage period of one year under normal temperature and dry conditions.