OPTICAL BRIGHTENER BA CAS NO.12768-92-2 C.I.113

Specifications optical brightener ba 1>easily soluble in water 2>acid-resistant, alkali-resistant 3>used in paper-making industry product name: optical brightener ba molecular formula: c40h42n12o10s2na2molecular weight: 960.95 (as international relative atom mass 1991)max uv absorption spectrum: 348 nm   specs: appearance: light yellow uniform powder             fluorescent strenghth (equivalent to the standard sample): 100             color shade: similar to slightly different             moisture content: 5% max             content of water-insoluble impurities: 0.5% max             fineness (residual content passed through 180μm-pore sieve ): 10% max   property:    the product is readily soluble in water, acid-resistant, alkali-resistant, and has much better whitening effect than vbl at ph 4.5-7. Belonging to anionic type, it can be used in the one bath with anionic or nonionic surfactants. Application:    mainly applied to whiten paper pulp, surface sizing, coating, and also applied to whiten cotton, linen and cellulose fiber as well as cellulose fabrics, and to brighten light-colored cellulose fabrics.