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                5-(2-Hydroxy-3-naphthoylamino)benzimidazol-2-one

                Product Code: ASBI
                Products name: 5-(2-Hydroxy-3-naphthoylamino)benzimidazol-2-one
                Category: Dye intermediates
                CAS NO.: 26848-40-8
                Molecular formula:  C18H13N3O3
                Structural formula:
                Quality Index: ① Appearance: Yellow powder
                ② Purity (%): ≥99.0
                ③ Loss on drying (%): ≤0.5
                ④ Alkali insoluble matter (%): ≤1.0
                ⑤ ABI Purity (%): ≤0.15
                ⑥ 2,3 acid (%): ≤0.1
                ⑦ PH: 7-7.5
                Uses: The product is the special intermediate for benzimidazolone series of organic pigments, mainly for the synthesis of dark high-grade azo pigments, including C. I. Pigment Red 171,176,185,208, Pigment Purple 32, Pigment Brown 25, and so on more than ten kinds of important products. 5-Amino-2 (3H) -benzimidazolone synthesis of ASBI, can be used for the synthesis of pigment red 171,175,176,185,208, purple 33, brown 25 and other important products.

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