2,4-Dichlorobenzaldehyde Chemical Properties

Melting point:

64-69 °C (lit.)

Boiling point:

233 °C (lit.)

Density 

1.3456 (rough estimate)

refractive index 

1.5756 (estimate)

Flash point:

135 °C

storage temp. 

Store below +30°C.

form 

Crystalline Powder, Crystals and/or Chunks

color 

Light yellow to beige

Water Solubility 

<0.1 g/100 mL at 24 ºC

Sensitive 

Air Sensitive

BRN 

471601

CAS DataBase Reference

874-42-0(CAS DataBase Reference)

NIST Chemistry Reference

Benzaldehyde, 2,4-dichloro-(874-42-0)

EPA Substance Registry System

Benzaldehyde, 2,4-dichloro- (874-42-0)

Safety Information

Hazard Codes 

C,N,Xi

Risk Statements 

34-51/53-36/37/38

Safety Statements 

26-36/37/39-45-61-37/39

RIDADR 

UN 3261 8/PG 2

WGK Germany 

2

Autoignition Temperature

440 °C

Hazard Note 

Corrosive

TSCA 

Yes

HazardClass 

8

PackingGroup 

III

HS Code 

29130000

Toxicity

LD50 orally in Rabbit: 3470 mg/kg

MSDS

• Language:English Provider:2,4-Dichlorobenzaldehyde
• Language:English Provider:ACROS
• Language:English Provider:SigmaAldrich
• Language:English Provider:ALFA

2,4-Dichlorobenzaldehyde Usage And Synthesis

Chemical Properties

light yellow to beige crystalline powder, crystals

Uses

2,4-Dichlorobenzaldehyde is used in the synthesis of platelet aggregation inhibitors. Also used in the preparation of novel Schiff bases containing quinazolinone rings.

Uses

2,4-Dichlorobenzaldehyde was used in the solid-phase synthesis of a series of indole-based peptoids.

Synthesis Reference(s)

Tetrahedron Letters, 30, p. 3677, 1989 DOI: 10.1016/S0040-4039(01)80481-0

General Description

White crystalline solid or off-white chunky solid with black specks and a pungent odor. Average shelf life 1 year in a closed container.

Air & Water Reactions

Sensitive to light. May also be sensitive to prolonged exposure to air and moisture. Insoluble in water.

Reactivity Profile

2,4-Dichlorobenzaldehyde is incompatible with iron, oxygen and oxygen-containing materials. 2,4-Dichlorobenzaldehyde is also incompatible with strong oxidizers and strong bases.

Fire Hazard

2,4-Dichlorobenzaldehyde is combustible.

Purification Methods

Crystallise the aldehyde from EtOH or ligroin. [Beilstein 7 IV 575.]

2,4-Dichlorobenzaldehyde(874-42-0)Related Product Information

• 4-Dimethylaminobenzaldehyde
• Benzaldehyde
• 4-Hydroxybenzaldehyde
• 2-Nitrobenzaldehyde
• 2,3-DICHLOROBENZALDEHYDE,2,3-Dichlorobenzaldehyde,99%,2,3-Dichlorobenzaldehyde,99%,2,3-DICHLOROBENZALDEHYDE
• p-Anisaldehyde
• 2',4'-Dichloroacetophenone
• 2,4-Dichlorophenol
• 3-(Trifluoromethyl)benzaldehyde
• 2,6-Dichlorobenzaldehyde
• 2,5-Dichlorobenzaldehyde
• 2,4-DICHLORO-6-HYDROXYBENZALDEHYDE
• 2,2',4'-Trichloroacetophenone
• 2,4-DICHLORO-3,5-DINITROBENZOIC ACID
• 2,4-Dichlorobenzoyl chloride
• 3,5-Dichlorobenzaldehyde
• 3,4,5,6-TETRACHLOROFLUORESCEIN
• Tetrachlorophthalimide