Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content
NIOSH

N,N-DIMETHYLANILINE

ICSC: 0877

N,N-Dimethylphenylamine
C8H11N / C6H5N(CH3)2
Molecular mass: 121.2
ICSC # 0877 		CAS # 121-69-7
RTECS # BX4725000
UN # 2253
EC # 612-016-00-0
March 23, 1998 Validated

TYPES OF HAZARD/ EXPOSURE

ACUTE HAZARDS/ SYMPTOMS

PREVENTION

FIRST AID/
FIRE FIGHTING

FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire.
NO open flames. NO contact with oxidants.
Powder, water spray, foam, carbon dioxide.
EXPLOSION Above 62°C explosive vapour/air mixtures may be formed.
Above 62°C use a closed system, ventilation.
In case of fire: keep drums, etc., cool by spraying with water. Combat fire from a sheltered position.
EXPOSURE


•INHALATION Abdominal pain. Blue lips or finger nails. Blue skin. Confusion. Convulsions. Dizziness. Headache. Laboured breathing. Nausea. Unconsciousness. Vomiting. Ringing in the ears. Visual disturbance.
Ventilation, local exhaust, or breathing protection.
Fresh air, rest. Refer for medical attention.
•SKIN MAY BE ABSORBED! Redness.
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse skin with plenty of water or shower.
•EYES Redness. Pain.
Face shield, or eye protection in combination with breathing protection.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
•INGESTION (See Inhalation).
Do not eat, drink, or smoke during work.
Rinse mouth. Give a slurry of activated charcoal in water to drink. Rest. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Collect leaking and spilled liquid in sealable metal or glass containers as far as possible. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Do NOT let this chemical enter the environment. (Extra personal protection: filter respirator for organic gases and vapours). Chemical protection suit.
Separated from strong oxidants, food and feedstuffs. Ventilation along the floor.
Do not transport with food and feedstuffs.
T symbol
N symbol
R: 23/24/25-40-51/53
S: 1/2-28-36/37-45-61
UN Hazard Class: 6.1
UN Packing Group: II
ICSC: 0877 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

N,N-DIMETHYLANILINE

ICSC: 0877

I

M

P

O

R

T

A

N

T


D

A

T

A

PHYSICAL STATE; APPEARANCE:
YELLOW OILY LIQUID , WITH CHARACTERISTIC ODOUR. TURNS BROWN ON EXPOSURE TO AIR.

PHYSICAL DANGERS:


CHEMICAL DANGERS:
The substance decomposes on heating producing highly toxic fumes (aniline, nitrogen oxides). Reacts with oxidants.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 5 ppm, as TWA; 10 ppm, as STEL; (skin); A4 (not classifiable as a human carcinogen); BEI issued (ACGIH 2008).
MAK: 5 ppm, 25 mg/m3;
Peak limitation category: II(2);
skin absorption (H);
Carcinogen category: 3B; Pregnancy risk group: D
(DFG 2008).
OSHA PEL†: TWA 5 ppm (25 mg/m3) skin
NIOSH REL: TWA 5 ppm (25 mg/m3) ST 10 ppm (50 mg/m3) skin
NIOSH IDLH: 100 ppm See: 121697


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation, through the skin and by ingestion.

INHALATION RISK:
A harmful contamination of the air will be reached rather slowly on evaporation of this substance at 20°C.

EFFECTS OF SHORT-TERM EXPOSURE:
Swallowing the liquid may cause aspiration into the lungs with the risk of chemical pneumonitis. The substance may cause effects on the blood , resulting in formation of methaemoglobin. Exposure far above OEL could cause lowering of consciousness. The effects may be delayed. Medical observation is indicated.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Repeated or prolonged contact with skin may cause dermatitis.

PHYSICAL
PROPERTIES

Boiling point: 192-194°C
Melting point: 2.5°C
Relative density (water = 1): 0.96
Solubility in water: none
Vapour pressure, Pa at 20°C: 67
Relative vapour density (air = 1): 4.2
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.002
Flash point: 62°C
Auto-ignition temperature: 371°C
Explosive limits, vol% in air: 1-7
Octanol/water partition coefficient as log Pow: 2.3

ENVIRONMENTAL
DATA

The substance is harmful to aquatic organisms.

N O T E S

Depending on the degree of exposure, periodic medical examination is indicated. Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available.
Transport Emergency Card: TEC (R)-846-2

NFPA Code: H3; F2; R0
Card has been partially updated in November 2008: see Occupational Exposure Limits.

ADDITIONAL INFORMATION



ICSC: 0877 N,N-DIMETHYLANILINE
(C) IPCS, CEC, 1994
IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
Top