Naphthalene

• Catalog No.: A13188
• CAS Number: 91-20-3
• M. F.: C10H8
• M. W.: 128.17052
• Purity: 99+%

SYNONYMS

• Title: 萘
• IUPAC name: naphthalene
• IUPAC Traditional name: naphthalene

DATABASE IDS

• Beilstein Number: 1421310
• Merck Index: 146370
• EC Number: 202-049-5
• CAS Number: 91-20-3
• MDL Number: MFCD00001742

PROPERTIES

• Packing Group: III
• GHS Hazard statements: H228-H351-H400-H410-H302
• European Hazard Symbols: X
• European Hazard Symbols: Flammable (F)
• European Hazard Symbols: Nature polluting (N)
• GHS Precautionary statements: P210-P241-P280-P301+P312-P405-P501A
• Risk Statements: 11-22-40-50/53
• RTECS: QJ0525000
• Safety Statements: 36/37-46-60-61
• TSCA Listed: 是
• Hazard Class: 4.1
• UN Number: UN1334
• Purity: 99+%
• Boiling Point: 218°C
• Density: 0.963
• Flash Point: 78°C(172°F)
• Melting Point: 80-82°C
• Refractive Index: 1.5821

REFERENCES

• Reacts with Na metal in 1,2-dimethoxyethane to give Na naphthalenide. This radical anion is a powerful-electron donor, e.g. in reductive dehalogenation of vic-dihalides: J. Chem. Soc., Chem. Commun., 78 (1969), and in reductive cleavage of tosylates to alcohols: J. Am. Chem. Soc., 88, 1581 (1966).
• Li naphthalenide is a useful, non-nucleophilic reagent for the conversion of carboxylic acids to their dianions in cases where LDA could interfere: J. Org. Chem., 45, 1106 (1980). Similarly, has been found preferable to LDA in the lithiation of allylic nitriles: Synthesis, 358 (1981).
• Carboxylic acids react with alkyl, alkenyl or aryl chlorides in the presence of Li metal and a catalytic amount of naphthalene in THF to give ketones in fair to good yields: J. Org. Chem., 61, 6058 (1996).