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ISO9001 Optical Brightener ER-I Yellow Green Powder 99% CAS No 13001-39-3
Product Details
Mat no.10010013 Fluorescent Brightener ER-I (FBA 199) CAS No.13001-39-3 Yellow-green powder purity≥99%
| Melting point | 229-231 °C(Solv: N,N-dimethylformamide (68-12-2)) |
| Boiling point | 575.7±50.0 °C(Predicted) |
| density | 1.18±0.1 g/cm3(Predicted) |
| Storage conditions | Sealed in dry, 2-8°C |
| Use |
This product is used for the whitening of acetate, nylon, polyester and polyester-cotton blended fabrics. After being treated with it, the fabric has high whiteness and pure color. |
| Production method |
Add 1 000 kg of solvent methoxyethyl acetate into the condensation kettle, start stirring, add 134 kg of terephthalaldehyde and 560 kg of 2-(bisethylphosphonomethyl)-benzonitrile. After stirring, add 500 kg of 30% sodium methoxide methanol solution, react at 50 ℃ for 4 h, cool to below 20 ℃, add salt to crystallize. After centrifugal separation, the filter cake was washed with water and filtered to obtain a crude product. Recrystallization gives 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. |
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