133532-53-3

Basic information

• Product Name: BENZOIC ACID, 4-(6-HYDROXY-5-NITRO-2-BENZOXAZOLYL)-
• Synonyms: BENZOIC ACID, 4-(6-HYDROXY-5-NITRO-2-BENZOXAZOLYL)-
• CAS NO: 133532-53-3
• Molecular Formula: C14H8N2O6
• Molecular Weight: 300.22
• Mol File: 133532-53-3.mol
• Article Data: 1

Chemical Properties

• Appearance: /
• CAS DataBase Reference: BENZOIC ACID, 4-(6-HYDROXY-5-NITRO-2-BENZOXAZOLYL)-(CAS DataBase Reference)
• NIST Chemistry Reference: BENZOIC ACID, 4-(6-HYDROXY-5-NITRO-2-BENZOXAZOLYL)-(133532-53-3)
• EPA Substance Registry System: BENZOIC ACID, 4-(6-HYDROXY-5-NITRO-2-BENZOXAZOLYL)-(133532-53-3)

Safety Data

• Hazardous Substances Data: 133532-53-3(Hazardous Substances Data)

Upstream product

• 133554-24-2 methyl 4-(6-hydroxy-5-nitrobenzo[d]oxazol-2-yl)benzoate 

Relevant articles and documents

4-(5-Amino-6-Hydroxybenzoxazol-2-YL) Ammonium Benzoate and Preparation Method and Use Thereof

Disclosed in the present invention are 4-(5-amino-6-hydroxybenzoxazol-2-yl)ammonium benzoate shown in formula (I) and the preparation method and use thereof. The preparation method comprises: fully reacting 4-(5-amino-6-hydroxybenzoxazol-2-yl)benzoic acid shown in formula (II) or 4-(5-amino-6-hydroxybenzoxazol-2-yl)carboxamide benzoate, as a raw material, with ammonia in an aqueous solvent, and directly heating the obtained reaction liquid to remove excess ammonia, so as to obtain 4-(5-amino-6-hydroxybenzoxazol-2-yl)ammonium benzoate. The mass of the 4-(5-amino-6-hydroxybenzoxazol-2-yl)ammonium benzoate (ABAA) prepared in the present invention can reach a polymer grade (where the purity is above 99.5%, the content of metal ions is below 200 ppm, and containing no DMF polymerization inhibition impurities), and the 4-(5-amino-6-hydroxybenzoxazol-2-yl)ammonium benzoate can be used as an AB type monomer for preparing PBO and modified PBO fibres, the resulting PBO having an intrinsic viscosity n of up to 38/dl/g, and the method has such features as ABAA being highly soluble in PPA, a fast polymerization speed, a short time of 2-4 h, a low temperature of 150° C., a high molecular weight of the polymer, fibres of excellent tensile property, being easy to industrialize, etc.