Fluorescent brightenerERI L
C.I.199 CAS: 13001-39-3
Structural formula:
Chemical name:1,4-Bis(2-Cyanostyryl)Benzene
Molecular formula:C24H16N2
Molecular weight:332.2 (According to1997International relative atomic mass)
Maximum ultraviolet absorption wavelength:370 nm (In ethanol)
Maximum fluorescence emission wavelength:435 nm
Implementation standard:Q/LQH008-2003
Quality indicators:
Item | Indicator |
Appearance | Light yellowish-green dispersion |
Purity | ≥ 99.0% |
Melting point | 230-232℃ |
Particle fineness(> 4μmParticle number)pcs | ≤ 3 |
Performance characteristics:
Fluorescent brightenerER-330belongs to the stilbene compounds. It is insoluble in water and has good solubility in most organic solvents. It is stable to cationic softeners. It can be used in the same bath with sodium hypochlorite, hydrogen peroxide and reducing bleaching agents, showing non-ionic properties. It can be used for whitening polyester, acetate fiber, nylon, etc. It has a light fastness of grade 5 and excellent washing fastness. In the application of polyester fibers, whether it is dip dyeing or pad dyeing, a high whiteness value can be obtained. It is especially suitable for whitening polyester by the low-temperature adsorption and fixation method.
Usage method and dosage:(Taking the adsorption and fixation method as an example)
Process flow:
Polyester fiber→ Immersion → Heating → Heat preservation → Washing → Drying → Finished product
Raw materials and formula:
Fluorescent brightener ER-330 0.3-1.5% Glauber's salt(Industrial product) 1.0% lavocal AFR 1.0%
Acetic acid(98%) 0.55g/L Bath ratio1∶5-40 PH=4-5
Prepare the whitening solution according to the formula, put in the polyester products, heat up to50℃ at a rate of1-1.5℃ per minute, and maintain for30minutes. Then cool down and wash with cold water, shape and dry to get the finished product.
Packaging:Packed in plastic barrels, net weight per barrel10kg.
Storage: It should be stored in a cool and dry warehouse.
