Name | Fluorescent brightener 199 |
Synonyms | FBA 199 C.I.199 Optical Brightener ER optical brightener 199 Optical Brightener ER II Fluorescent Brightener ER-1 1,4-BIS(4-CYANOSTYRYL)BENZENE Optical Brightening Agent ER-Ⅲ 1,4-bis(2-cyanostyryl) Benzene 1,4-bis(2,4-cyano-phenlene)-benzene Optical Brightening Agent ER C. I. 199 4,4-(p-phenylenediethene-2,1-diyl)bisbenzonitrile 4,4-(benzene-1,4-diyldiethene-2,1-diyl)dibenzonitrile Benzonitrile, 4,4-(1,4-phenylenedi-2,1-ethenediyl)bis- 2-[2-[4-[2-(2-cyanophenyl)vinyl]phenyl]vinyl]benzonitrile fluorescent whitening agent ER |
CAS | 13001-40-6 13001-39-3 |
EINECS | 235-836-7;235-835-1 |
InChI | InChI=1/C24H16N2/c25-17-23-13-9-21(10-14-23)7-5-19-1-2-20(4-3-19)6-8-22-11-15-24(18-26)16-12-22/h1-16H/b7-5+,8-6+ |
Molecular Formula | C24H16N2 |
Molar Mass | 332.40 |
Density | 1.18g/cm3 |
Melting Point | 230-234℃ |
Boling Point | 571.3°C at 760 mmHg |
Flash Point | 272.8°C |
Vapor Presure | 4.61E-13mmHg at 25°C |
Appearance | Bright yellow crystalline powder |
Storage Condition | Sealed in dry,Room Temperature |
Stability | Incompatible with strong oxidizing agents. Combustible. |
Refractive Index | 1.66 |
Physical and Chemical Properties | Melting point 230-234°C. |
Use | Can improve the whiteness and gloss of the material, mainly used in textile, paper, plastic and synthetic detergent industry |
Raw Materials | 4,4-Diaminodiphenylethylene-2,2-disulfonic acid Aniline Sodium carbonate Cyanuric chloride Ethanolamine |
Reference Show more | 1. He Zhihua, Zuo Junfeng, Xiong Majian, Zhu Bijun. Determination of Fluorescent Whitening Agents in Pharmaceutical Composite Films by High Performance Liquid Chromatography [J]. Journal of Drug Analysis, 2020,40(09):1645-1652. |
Add 1000kg of solvent methoxyethylacetate to the condensation kettle, start stirring, and add 134kg of para benzaldehyde and 560kg of 2- (diethylphosphonylmethyl) benzonitrile. Stir well and add 500kg of 30% sodium methoxide methanol solution. React at 50 ℃ for 4 hours, cool to below 20 ℃, and add salt for crystallization. Centrifuge separation, wash the filter cake with water, and filter to obtain the crude product. Recrystallize to yellow green crystals. Grind the pure product, leveling agent, and an appropriate amount of water together to form a 10% suspension to obtain the fluorescent whitening agent ER product.
This product can be managed according to general industrial chemicals. When using it, gloves and protective glasses should be worn to avoid direct contact with the skin and eyes. If it gets on the skin, rinse with water and soap. Place in a cool and dry warehouse to prevent exposure to sunlight and rain.
add 1 000 kg of solvent methoxyethyl acetate into the condensation kettle, start stirring, add 134 kg of terephthalaldehyde, and 560 kg2-(diethylphosphonomethyl)-benzonitrile. After stirring well, add 500kg 30% of sodium methoxide methanol solution, react at 50 ℃ for 4 h, cool to below 20 ℃, add food salting out crystal. Centrifugal separation, washing the filter cake with water, and filtering to obtain coarse products. Recrystallization results in yellow-green crystals. The pure product, leveling agent and appropriate amount of water are ground together to prepare a 10% suspension to obtain a fluorescent whitening agent ER product.