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

DIMETHYLAMINE (aqueous solution)

ICSC: 1485

Methanamine, N-methyl (aqueous solution)
DMA (aqueous solution)
(CH3)2NH / C2H7N
Molecular mass: 45.1
ICSC # 1485 		CAS # 124-40-3
RTECS # IP8750000
UN # 1160
EC # 612-001-01-6
June 05, 2003 Validated

TYPES OF HAZARD/ EXPOSURE

ACUTE HAZARDS/ SYMPTOMS

PREVENTION

FIRST AID/
FIRE FIGHTING

FIRE Highly flammable. Gives off irritating or toxic fumes (or gases) in a fire.
NO open flames, NO sparks, and NO smoking.
Water in large amounts, alcohol-resistant foam, dry powder, carbon dioxide.
EXPLOSION Vapour/air mixtures are explosive.
Closed system, ventilation, explosion-proof electrical equipment and lighting. Use non-sparking handtools.
In case of fire: keep drums, etc., cool by spraying with water.
EXPOSURE
AVOID ALL CONTACT!

•INHALATION Burning sensation. Cough. Headache. Sore throat. Laboured breathing. Shortness of breath.
Ventilation, local exhaust, or breathing protection.
Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention.
•SKIN Redness. Pain. Serious skin burns.
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.
•EYES Redness. Pain. Blurred vision. Severe deep burns.
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 Abdominal pain. Burning sensation. Shock or collapse.
Do not eat, drink, or smoke during work.
Rinse mouth. Do NOT induce vomiting. Give plenty of water to drink. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Evacuate danger area! Remove all ignition sources. Cover the spilled material with foam. Collect leaking liquid in covered containers. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Do NOT wash away into sewer. Do NOT let this chemical enter the environment. Personal protection: filter respirator for organic gases and vapours.
Fireproof. Cool. Separated from strong acids, oxidants , aluminium , copper and its alloys, mercury, zinc , food and feedstuffs . Well closed.
Do not transport with food and feedstuffs.
Note: B
F+ symbol
C symbol
R: 12-20/22-34
S: 1/2-3-16-26-29-36/37/39-45
UN Hazard Class: 3
UN Subsidiary Risks: 8
UN Packing Group: II
ICSC: 1485 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.

DIMETHYLAMINE (aqueous solution)

ICSC: 1485

I

M

P

O

R

T

A

N

T


D

A

T

A

PHYSICAL STATE; APPEARANCE:
SOLUTION IN WATER , WITH PUNGENT ODOUR.

PHYSICAL DANGERS:
The vapour is heavier than air and may travel along the ground; distant ignition possible.

CHEMICAL DANGERS:
The solution in water is a strong base, it reacts violently with acid and is corrosive. Reacts violently with strong oxidants and mercury causing fire and explosion hazard. Attacks aluminium, copper, zinc alloys, galvanized surfaces and plastic.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 5 ppm as TWA; 15 ppm as STEL; A4 (not classifiable as a human carcinogen); (ACGIH 2004).
EU OEL: 2 ppm, 3.8 mg/m3, as TWA; 5 ppm, 9.4 mg/m3, as STEL; (EU 1998).


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its aerosol and by ingestion.

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

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is corrosive to the eyes and the skin. The vapour is severely irritating to the respiratory tract . Corrosive on ingestion.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:

PHYSICAL
PROPERTIES

Boiling point: 51°C
Melting point: -37°C
Relative density (water = 1): 0.9
Vapour pressure, kPa at 20°C: 26.3
Relative vapour density (air = 1): 1.6
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.14
Flash point: -18°C
Auto-ignition temperature: 400°C
Explosive limits, vol% in air: 2.8-14.4
Octanol/water partition coefficient as log Pow: -0.2
Viscosity dynamical: 3.4mPa/s

ENVIRONMENTAL
DATA

The substance is harmful to aquatic organisms.

N O T E S

Toxicity information applies to aqueous solutions containing dimethylamine over 15%, and physical properties will vary according to concentration. Physical properties of this card are for the 40% solution. See ICSC 0260 Dimethylamine gas in a cylinder. Card has been partly updated in April 2005. See sections Occupational Exposure Limits, EU classification.
Transport Emergency Card: TEC (R)-30GFC-II
NFPA Code: H3; F4; R0;

ADDITIONAL INFORMATION



ICSC: 1485 DIMETHYLAMINE (aqueous solution)
(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