2-Naphthaldehyde Chemical Properties

Melting point:

58-61 °C (lit.)

Boiling point:

160 °C (19 mmHg)

Density 

1.6211

refractive index 

1.6211 (estimate)

Flash point:

160°C/19mm

storage temp. 

-20°C

solubility 

Chloroform, Methanol (Sparingly)

form 

Powder or Chunks

color 

Off-white to yellow or light beige

Water Solubility 

Soluble in hot water.

FreezingPoint 

1.0755

Sensitive 

Air Sensitive

BRN 

507750

InChIKey

PJKVFARRVXDXAD-UHFFFAOYSA-N

CAS DataBase Reference

66-99-9(CAS DataBase Reference)

NIST Chemistry Reference

2-Naphthalenecarboxaldehyde(66-99-9)

EPA Substance Registry System

2-Naphthalenecarboxaldehyde (66-99-9)

Safety Information

Hazard Codes 

Xn,Xi

Risk Statements 

36/37/38-22

Safety Statements 

22-24/25-36-26

RIDADR 

UN 3335

WGK Germany 

3

RTECS 

QJ0190010

F 

10-23

HS Code 

29122900

MSDS

• Language:English Provider:2-Naphthaldehyde
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2-Naphthaldehyde Usage And Synthesis

Chemical Properties

Pink crystalline

Uses

2-Naphthaldehyde aids in stereo-selective formation of bicyclo 2-siloxy-2-alkoxyoxetanes. It is also used as catalytic agent and petrochemical additive.

Uses

2-Naphthaldehyde can be used as a reactant:

• In proline catalyzed aldol reaction.
• In asymmetric three-component Mannich reaction.
• For the synthesis of Hantzsch 1,4-dihydropyridines.13}
• Asymmetric benzoin condensation reaction.
• For the synthesis of pyrazolo[1,2?b]phthalazinediones.
• For the synthesis C₆₀ by flash vacuum pyrolysis.

Definition

ChEBI: A naphthaldehyde that is naphthalene substituted by a formyl group at position 2.

Synthesis Reference(s)

Synthesis, p. 470, 1996 DOI: 10.1055/s-1996-4246

Purification Methods

Distil 2-naphthaldehyde with steam then crystallise it from water or EtOH. [Beilstein 7 IV 1288.]

2-Naphthaldehyde(66-99-9)Related Product Information

• 2-Chlorobenzaldehyde
• Sodium poly[(naphthaleneformaldehyde)sulfonate]
• 1-Hydroxy-2-naphthoic acid
• 4-AMINOSULFONYL-1-HYDROXY-2-NAPHTHOIC ACID, 97
• N-(2,3-Dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxy-2-naphthalenecarboxamide
• 5,12-NAPHTHACENEQUINONE
• 2-Naphthoyl chloride
• PHENYL 3-HYDROXY-2-NAPHTHOATE
• Naphthol AS
• 9-ACETYLPHENANTHRENE
• 9,10-DIHYDROBENZO[A]PYREN-7(8H)-ONE
• 2-ACETYLPHENANTHRENE
• 3-HYDROXY-2-NAPHTHOIC ACID HYDRAZIDE
• 3,5-DIHYDROXY-2-NAPHTHOIC ACID
• XYLIDYL BLUE I SODIUM SALT
• NAPHTHOL AS ACETATE
• 1'-HYDROXY-2'-ACETONAPHTHONE
• NAPHTHOL AS-BI PHOSPHATE