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| CAS No.: | 66-99-9 |
|---|---|
| Name: | 2-Naphthaldehyde |
| Molecular Structure: | |
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|
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| Formula: | C11H8O |
| Molecular Weight: | 156.184 |
| Synonyms: | 2-Naphthaldehyde(8CI);2-Formylnaphthalene;2-Naphthalenealdehyde;2-Naphthylcarboxaldehyde;NCR 1;NCR 1 (aldehyde);NSC 8557;Naphthalene-2-carbaldehyde;b-Formylnaphthalene;b-Naphthaldehyde;b-Naphthylcarboxaldehyde;2-Naphthalenecarboxaldehyde; |
| EINECS: | 200-640-2 |
| Density: | 1.155 g/cm3 |
| Melting Point: | 58-61 °C(lit.) |
| Boiling Point: | 299.5 °C at 760 mmHg |
| Flash Point: | 179.5 °C |
| Solubility: | Soluble in hot water. |
| Appearance: | Pink crystalline |
| Hazard Symbols: |
 Xn, Xi
|
| Risk Codes: | 36/37/38-22 |
| Safety: | 22-24/25-36-26 |
| PSA: | 17.07000 |
| LogP: | 2.65230 |
| Conditions | Yield |
|---|---|
| With dimethyl selenoxide In benzene for 5h; Heating; | 100% |
| With dinitrogen monoxide; dioxo(tetramesitylporphyrinato)ruthenium(VI) In 1,2-dichloro-ethane at 120℃; under 7500.6 Torr; for 9h; | 100% |
| With 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione In tert-butyl alcohol for 1h; Reflux; | 100% |
| Conditions | Yield |
|---|---|
| With ammonium cerium(IV) nitrate In methanol; water at 20℃; for 0.166667h; Ring cleavage; | 100% |
| With dimethylboron bromide In dichloromethane; 1,2-dichloro-ethane at -78℃; for 1h; | 95% |
| With dimethylboron bromide; sodium hydrogencarbonate 1) CH2Cl2, -78 deg C, 1h, 2) THF, 5 min; Yield given. Multistep reaction; | |
| With Pyrene-1-carboxylic acid; C33H22NO4(1-)*Na(1+) In dimethylsulfoxide-d6; water-d2 at 85℃; for 6h; Reagent/catalyst; | 73 %Spectr. |
2-(naphthalen-2-yl)-1,3-dithiolane
β-naphthaldehyde
| Conditions | Yield |
|---|---|
| With tetrafluoroboric acid; mercury(II) oxide In tetrahydrofuran Ambient temperature; | 100% |
| With tetrafluoroboric acid; mercury(II) oxide In tetrahydrofuran Product distribution; Ambient temperature; various 1,3-dithiolanes; | 100% |
| With K-10 clay supported copper(II) nitrate trihydrate In dichloromethane for 6h; Ambient temperature; with K-10 clay-supported iron(III) nitrate nonahydrate; | 99.6% |
| With K-10 clay supported copper(II) nitrate trihydrate In dichloromethane for 6h; Ambient temperature; K-10 clay supported iron(III) nitrate nonahydrate; | 99.6% |
| With indium (III) iodide; dihydrogen peroxide In water; toluene at 20℃; for 15h; Inert atmosphere; Sealed tube; | 86 mg |
diacetoxy(2-naphthyl)methane
β-naphthaldehyde
| Conditions | Yield |
|---|---|
| With H6P2W18O62 In toluene at 100℃; for 0.0833333h; | 100% |
| With rice husk supported FeCl3 nanoparticles In ethanol at 70℃; for 0.166667h; | 95% |
| With ethanol at 50 - 60℃; for 0.166667h; | 94% |
2-(naphthalen-2-yl)-1,3-dithiane
β-naphthaldehyde
| Conditions | Yield |
|---|---|
| With dihydrogen peroxide; tantalum pentachloride; sodium iodide In water; ethyl acetate at 20℃; for 24h; | 100% |
| With iron(III)-acetylacetonate; dihydrogen peroxide; sodium iodide In water; ethyl acetate at 20℃; for 1.3h; | 98% |
| Stage #1: 2-(naphthalen-2-yl)-1,3-dithiane With acetyl chloride; sodium nitrite In dichloromethane at 0 - 5℃; for 0.25h; Stage #2: With water In dichloromethane at 0 - 20℃; for 0.5h; | 96% |
| Conditions | Yield |
|---|---|
| With dipotassium hydrogenphosphate; dimethyl selenoxide In 1,2-dichloro-ethane for 6h; Heating; | 98% |
| With pyridine N-oxide; silver(l) oxide In acetonitrile at 25℃; | 95% |
| With hexamethylenetetramine; water; sodium dodecyl-sulfate; lanthanum(lll) triflate at 100℃; for 1.5h; Sommelet Aldehyde Synthesis; Green chemistry; | 94% |
| Conditions | Yield |
|---|---|
| With dipotassium hydrogenphosphate; Potassium benzeneselenite; dibenzo-18-crown-6 In acetonitrile for 5h; Heating; | 98% |
| With bismuth(III) nitrate; tetrabutyl ammonium fluoride at 100℃; for 3.5h; | 90% |
| With 4Na(1+)*6H(1+)*NiMo6O24(10-)=Na4H6NiMo6O24; oxygen In water; acetonitrile at 20℃; under 760.051 Torr; for 12h; Irradiation; | 90% |
2-(dimethoxymethyl)naphthalene
β-naphthaldehyde
| Conditions | Yield |
|---|---|
| With water In acetonitrile for 0.333333h; UV-irradiation; | 98% |
| With dimethylboron bromide; sodium hydrogencarbonate 1) CH2Cl2, -78 deg C, 1h, 2) THF, 5 min; Yield given. Multistep reaction; |
| Conditions | Yield |
|---|---|
| With sodium periodate; C53H44As2N2O3Ru In water; ethyl acetate; acetonitrile at 25℃; for 0.5h; | 98% |
| With oxygen; palladium diacetate; toluene-4-sulfonic acid In water at 100℃; under 6080.41 Torr; for 24h; Autoclave; | 88% |
| With sodium periodate In water; ethyl acetate; acetonitrile at 0℃; for 3h; | 87% |
N,N-(naphthalene-2-carbonyl)tosylhydrazide
β-naphthaldehyde
| Conditions | Yield |
|---|---|
| Stage #1: N,N-(naphthalene-2-carbonyl)tosylhydrazide With 1-(Trimethylsilyl)imidazole In toluene at 55℃; for 6h; Inert atmosphere; Stage #2: With citric acid In methanol; toluene at 20℃; for 1h; Reagent/catalyst; Temperature; Inert atmosphere; | 98% |
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The Molecular Structure of 2-naphthaldehyde (CAS NO.66-99-9):
Empirical Formula: C11H8O
Molecular Weight: 156.1806
Density:1.155 g/cm3
Melting point: 58-61 °C(lit.)
Boiling point: 299.5 °C at 760 mmHg
Flash point: 179.5 °C
FreezingPoint: 1.0755
Sensitive: Air Sensitive
Index of Refraction: 1.675
Molar Refractivity: 50.84 cm3
Surface Tension: 48.1 dyne/cm
Enthalpy of Vaporization: 53.95 kJ/mol
Vapour Pressure: 0.00119 mmHg at 25°C
Appearance: Pink crystalline
IUPAC: naphthalene-2-carbaldehyde
Synonyms: 2-Naphthaldehyde ; 2-Formylnaphthalene ; 2-Naphthalenecarboxaldehyde ; 4-07-00-01288 (Beilstein Handbook Reference) ; BRN 0507750 ; EINECS 200-640-2 ; beta-Formylnaphthalene ; beta-Naphthaldehyde ; beta-Naphthylaldehyde ; beta-Naphthylcarboxaldehyde ; 2-Naphthalenecarboxaldehyde ; 2-Naphthalenecarboxaldehyde (9CI)
2-naphthaldehyde (CAS NO.66-99-9) can be used in organic synthesis.
Which leads to the dry anhydrous hydrogen chloride, and anhydrous tin dichloride, a mixture of ether, to saturation, after adding 2 - naphthyl nitrile solution of ethyl ether, and then pass into the hydrogen chloride to saturation, and aldimine generated yellow tin tetrachloride network adduct. The complex with the steam distillation, from the distillate filter out the white solid product, namely, crude 2 - naphthalene formaldehyde, after vacuum distillation, was pure, the yield of about 70% .
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| mouse | LD50 | unreported | 1500mg/kg (1500mg/kg) | Farmaco, Edizione Scientifica. Vol. 19, Pg. 964, 1964. |
Hazard Codes: 
Xn
Xi
Risk Statements: 36/37/38-22
R36/37/38: Irritating to eyes, respiratory system and skin
R22: Harmful if swallowed
Safety Statements: 22-24/25-36-26
S22: Do not breathe dust
S24/25: Avoid contact with skin and eyes
S36: Wear suitable protective clothing
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
WGK Germany: 3
RTECS: QJ0190010
F: 10-23
HS Code: 29122900
It's stable under normal temperatures and pressures.
Conditions to Avoid: Incompatible materials.
Incompatibilities with Other Materials: Strong oxidizing agents, strong bases.
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide.
Hazardous Polymerization: Has not been reported.
