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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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