p-dimethylaminobenzaldehyde : p-DMAB : 4-(Dimethylamino)benzaldehyde - For Ehrlich Reagent - 250g

4-(Dimethylamino)benzaldehyde
Other Names: p-Dimethylaminobenzaldehyde, DMAB

CAS Number: 100-10-7
Sum Formula: C₉H₁₁NO
Molar Mass: 149.19 g/mol
Appearance: Pale yellow to yellow crystalline solid

4-(Dimethylamino)benzaldehyde is an aromatic aldehyde with an electron-donating dimethylamino group in the para position. It is widely used as a reagent in chemical analysis, organic synthesis, and the development of chromogenic and fluorescent compounds.

Chemical and Physical Properties

Density: ~1.13 g/cm³
Melting Point: 72–75°C
Boiling Point: 259–260°C
Solubility in Water: Slightly soluble
Solubility in Other Solvents: Soluble in ethanol, acetone, and chloroform
Odor: Characteristic aromatic odor

Applications

Analytical Chemistry: Used as a colorimetric reagent, particularly in Ehrlich’s test for indole derivatives.

Organic Synthesis: Serves as a key intermediate for dyes, pigments, and functionalized aromatic compounds.

Research Applications: Applied in the development of molecular sensors and in photochemical investigations.

Laboratory Reagent: Used in qualitative and quantitative analysis of amines and related functional groups.

Safety

Signal Word: Warning

Hazard Statements:
H302: Harmful if swallowed
H315: Causes skin irritation
H319: Causes serious eye irritation
H335: May cause respiratory irritation

Precautionary Statements:
P261: Avoid breathing dust or vapors
P264: Wash hands thoroughly after handling
P270: Do not eat, drink, or smoke when using this product
P280: Wear protective gloves, protective clothing, and eye protection
P301+P312: IF SWALLOWED: Call a POISON CENTER or doctor if you feel unwell
P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing

First Aid Measures

Eye Contact: Rinse cautiously with water for several minutes. Seek medical attention if irritation persists.
Skin Contact: Wash with soap and water. Remove contaminated clothing. Seek medical attention if irritation occurs.
Inhalation: Move to fresh air. Seek medical attention if symptoms persist.
Ingestion: Rinse mouth with water. Do not induce vomiting. Seek medical help if unwell.

Handling and Storage

Storage Conditions: Store in a tightly closed container in a cool, dry, and well-ventilated area. Keep away from light and strong oxidizers.
Handling Precautions: Avoid inhalation of dust and contact with skin and eyes. Use appropriate personal protective equipment.