| Company Name: |
Alfa Aesar |
| Tel: |
400-6106006 |
| Email: |
saleschina@alfa-asia.com |
|
| | 1,8-Naphthalic anhydride Basic information |
| | 1,8-Naphthalic anhydride Chemical Properties |
| Melting point | 269 °C | | Boiling point | 295.48°C (rough estimate) | | density | 1.2571 (rough estimate) | | vapor pressure | 0Pa at 25℃ | | refractive index | 1.5550 (estimate) | | Fp | 272 °C | | storage temp. | Store below +30°C. | | solubility | Chloroform (Slightly, Heated), DMSO | | form | Powder | | color | Beige to light brown | | Water Solubility | decomposes | | Sensitive | Moisture Sensitive | | BRN | 153190 | | Henry's Law Constant | 1.6×101 mol/(m3Pa) at 25℃, HSDB (2015) | | InChI | 1S/C12H6O3/c13-11-8-5-1-3-7-4-2-6-9(10(7)8)12(14)15-11/h1-6H | | InChIKey | GRSMWKLPSNHDHA-UHFFFAOYSA-N | | SMILES | O=C1OC(=O)c2cccc3cccc1c23 | | LogP | 3.24 | | Surface tension | 72.5mN/m at 1.3mg/L and 20℃ | | CAS DataBase Reference | 81-84-5(CAS DataBase Reference) | | NIST Chemistry Reference | 1,8-Naphthalic anhydride(81-84-5) | | EPA Substance Registry System | 1,8-Naphthalic anhydride (81-84-5) |
| | 1,8-Naphthalic anhydride Usage And Synthesis |
| Chemical Properties | BEIGE TO LIGHT BROWN POWDER | | Uses | Dyestuffs, organic synthesis in general. | | Uses | 1,8-Naphthalic anhydride is used as a seed protectant and to prepare dyestuffs and optical brighteners. It is used in the preparation of napthalimide analogues, which finds application as anticancer agents. Further, it is used as fluorescent brightening agent for polymeric materials. | | Definition | ChEBI: Naphthalic anhydride is a cyclic dicarboxylic anhydride. | | Production Methods | No public source provides a proprietary industrial synthesis for nahthalic anhydride. However, its production can be inferred from its chemical structure. Industrial manufacture would typically begins with oxidation of naphthalene to form 1,8 naphthalic acid, followed by intramolecular dehydration to generate the anhydride ring system, steps consistent with the way 1,8 naphthalic anhydride is produced as a chemical intermediate in the dye and agrochemical industries. After cyclodehydration, the crude anhydride would be purified through controlled heating, solvent washing, and crystallisation to achieve the high purity required for use as a safener in seed treatment formulations. | | Mechanism of action | Enhances cytochrome P450-mediated oxidative metabolism of the herbicide | | Purification Methods | Extract it with cold aqueous Na2CO3 to remove free acid, then crystallise from acetic anhydride. [Beilstein 17 III/IV 6392, 17/11 V 492.] | | Pesticide Type | Semiochemical |
| | 1,8-Naphthalic anhydride Preparation Products And Raw materials |
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