Sulcofuron-sodium

ChEBI: The sodium salt of sulcofuron.

It is prepared by the following steps with p-chlorophenol and 2, 5-dichloronitrobenzene as starting materials. Preparation of 1.4, 4'-dichloro-2-nitrodiphenyl ether (Ⅰ) p-chlorophenol 64.3g, 2.5-dichloronitrobenzene 96g and potassium hydroxide 32.5g, stirred and reacted at 160-170℃ for 5h . Filter while hot, filter out potassium chloride, distill the filtrate under reduced pressure, and collect 220-230°C (1.47kPa) fractions. After cooling, it showed light yellow crystals with a melting point of 75-76.5°C. 2.4 The preparation of 4, 4'-dichloro-2-nitrodiphenyl ether-2'-sulfonic acid (II) 4, 4'-dichloro-2-nitrodiphenyl ether 200g, at room temperature, gradually add 700g96 %H2SO4, the temperature was raised to 100°C, and the reaction was stirred for 10h. Then added to 1.5kg ice water, light yellow crystals precipitated. Filtered, dissolved in hot water, adjusted with liquid caustic so as to be weakly alkaline, and precipitated Qizhisheng, pale yellow crystals of 4'-dichloro-2-nitro-diphenyl ether-2'-sodium sulfonate. 3.4 The preparation of 4, 4'-dichloro-2-amino-diphenyl ether-2'-sulfonic acid (Ⅲ) 4, 4'-dichloro-2-nitro-diphenyl ether-2'-sulfonic acid sodium 50g Dissolve in 500ml of water, add 150ml of glacial acetic acid in a boiling water bath with constant stirring, and add 50g of iron powder continuously in small amounts. After that, the reaction was continued with heating and stirring for 5 hours. Cool, filter out insolubles, and wash with water. The filter cake was heated and stirred in 5% NaOH, filtered while hot, and the filtrate was acidified with hydrochloric acid to precipitate sulfamic acid crystals. 4. Preparation of Metin FF 4, 4'-dichloro-2-amino-diphenyl ether-2'-sulfonic acid 16.7g dissolved in dilute sodium carbonate aqueous solution, under stirring, temperature 10℃, add 9.4g Has been publicly known, 4-dichlorophenyl isocyanate. After reacting at 10-15°C for 0.5h, the temperature is increased to 90°C and the reaction is continued for 2h. Filter while it is hot, and cool the filtrate to get Midin FF.

Insect moths on wool fibers or their fabrics are caused by caterpillars. There are two types of caterpillars, one is Lepidoptera moths and butterflies, and the other is Coleoptera beetles. They use keratin as food; they are active from April to May every year, and the humid and hot environment is more conducive to moths. It can be used with various acid dyes. The treated fabrics have good fastness to sunlight, washing, perspiration, rubbing and anti-moth resistance.