p-Nitrosodimethylaniline

  • N,N-Dimethyl-P-Nitrosoaniline
  • N,N-Dimethyl-4-nitrosoaniline
Formula
4-(NO)C6H4N(CH3)2
Structure
Description
A dark green crystalline solid. Harmful if ingested.
Uses
In printing fabrics.

Registry Numbers and Inventories.
CAS
138-89-6
EC (EINECS/ELINCS)
205-343-1
EC Class
toxic
R 11 23/24/25 40
S 15 36/37 45
RTECS
BX7175000
RTECS class
Tumorigen; Mutagen
UN (DOT)
1369
Merck
12,6736
Beilstein/Gmelin
607293
Beilstein Reference
4-12-00-01558
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed

Properties.
Formula
C8H10N2O
Formula mass
150.12
Melting point, °C
87
Boiling point, °C
259
Vapor pressure, mmHg
0.014 (25 C)
Density
1.145 g/cm3 (20 C)
Solubility in water
Insoluble
Partition coefficient, pKow
2.02
Heat of vaporization
49.6 kJ/mol
Heat of combustion
-4680 kJ/mol

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep away from water. Flammables-area. Keep containers tightly closed.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
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
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Remove all sources of ignition.
Disposal code
9
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents, strong reducing agents, strong acids, acetic acid, acetic anhydride.
Decomposition
Nitrogen oxides, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, nitrogen.

Fire.
Flash Point,°C
110
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. Water Reactive. Material will react with water and may release a flammable and/or toxic gas. Combustible solid. May burn rapidly with flare burning effect. May re-ignite after fire is extinguished. Containers may explode when heated. Extinguishing media: Do NOT use water directly on fire. DO NOT USE WATER, carbon dioxide, OR FOAM DIRECTLY ON FIRE ITSELF. For large fires use dry sand, dry chemical, soda ash or lime or withdraw from area and let fire burn. For small fires, use dry chemical, soda ash, lime or dry sand.
Fire potential
Flammable/combustible material.
Hazards
May ignite on contact with moist air or moisture. May burn rapidly with flare-burning effect. Some react vigorously or explosively on contact with water. Some may decompose explosively when heated or involved in a fire. May re-ignite after fire is extinguished. Runoff may create fire or explosion hazard.
Combustion products
Fire will produce irritating, corrosive and/or toxic gases.
Health
2
 
Flammability
4
 
 
Reactivity
0
 

Health.
Exposure effects
The toxological properties of this substance have not been fully investigated.
   Ingestion
Harmful if swallowed. Causes digestive tract irritation.
   Inhalation
May cause respiratory tract irritation.
   Skin
Causes skin irritation. Strong irritant of the skin.
   Eyes
May cause eye 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. Wash clothing before reuse.
   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
1369
Response guide
Hazard class
4.2
Packing Group
II
 
HS Code
2921 42 90
 
Std. Transport #
4916156