| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| toxicological data | Acute toxicity: Oral LD5O in rats: 7500mg/kg oral LD5O in mice: 3800mg/kg |
| Use | This product is used in the plastic industry for manufacturing with good insulation and anti-radioactive, and high temperature (above 400 ℃) of the new resin-polyimide and TNM polymer. 1,4,5,8-naphthalenetetracarboxylic acid can be used for dyes, pigments, resins and other intermediates. 1,4,5, 8-naphthalenetetracarboxylic acid can be used to produce reduced brilliant orange GR, reduced red GG, reduced Brown B and reduced Brown 5R, etc. |
| production method | with pyrene as raw material, 1,4,5 can be prepared by chlorination and oxidation, 8-naphthalenetetracarboxylic acid. The product can also be formed by the reaction of hydrazine with malononitrile followed by oxidation. In addition, the reaction with carbamoyl chloride or dimethylcarbamoyl chloride in the presence of aluminum trichloride in chlorobenzene is heated and hydrolyzed with sodium ammoxide solution to produce 5, 6-phthalic acid. Then, 1,4,5, 8-naphthalenetetracarboxylic acid can also be obtained by an oxidation reaction. |
