4-Dimethylaminobenzaldehyde

  • 4-(Dimethylamino)benzaldehyde
  • Erlichs reagent
Formula
C9H11NO
Structure
Description
Slightly yellow to brown powder or crystals.
Uses
Production of dyes.

Registry Numbers and Inventories.
CAS
100-10-7
EC (EINECS/ELINCS)
202-819-0
R 22 36/37/38
S 26 36/37/39
RTECS
CU5775000
RTECS class
Other
UN (DOT)
2811
Merck
13,3257
Beilstein/Gmelin
606802
Beilstein Reference
4-14-00-00051
Swiss Giftliste 1
G-3276
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C9H11NO
Formula mass
149.19
Melting point, °C
72
Boiling point, °C
266
Vapor pressure, mmHg
0.009 (25 C)
Vapor density (air=1)
5.15
Density
1.0254 g/cm3 (99.9 C)
Solubility in water
300 mg/L
Refractive index
1.6078 (100 C)
pKa/pKb
12.21 (pKb)
Partition coefficient, pKow
2.24
Heat of vaporization
50.5 kJ/mol

Hazards and Protection.
Storage
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Store protected from light.
Handling
Wash thoroughly after handling. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Use with adequate ventilation. Store protected from light.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Wash area with soap and water. Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.
Disposal code
3
Stability
Stable under normal temperatures and pressures. May discolor on exposure to light.
Incompatibilities
Strong oxidizing agents.
Decomposition
Nitrogen oxides, carbon monoxide, carbon dioxide, nitrogen.

Fire.
Flash Point,°C
103
Autoignition, °C
445
Upper exp. limit, %
6.1
Lower exp. limit, %
1
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. To extinguish fire use water spray, dry chemical, carbon dioxide, or chemical foam.
Fire potential
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Hazards
Contact with metals may evolve flammable hydrogen gas.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
1
 
Flammability
0
 
 
Reactivity
0
 

Health.
Poison_Class
4
Exposure effects
   Ingestion
May cause irritation of the digestive tract.
   Inhalation
Inhalation of dust may cause respiratory tract irritation.
   Skin
May cause skin irritation.
   Eyes
Dust may cause mechanical irritation.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
2811
Response guide
Hazard class
6.1
Packing Group
I; II; III
 
HS Code
2922 39 00