ICSC:NENG0001 International Chemical Safety Cards (WHO/IPCS/ILO)

N,N'-Dimethylurea
sym-Dimethylurea
N,N'-Dimethylharnstoff
(CH₃NH)₂CO/C₃H₈N₂₀
Molecular mass: 88.1
ICSC # 1745
CAS # 96-31-1
RTECS # YS9868000
De, GHS rechecked

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. 29, 30, 31, 32	NO open flames.	Carbon dioxide, water spray.
EXPLOSION	Finely dispersed particles form explosive mixtures in air.

EXPOSURE		PREVENT DISPERSION OF DUST!
•INHALATION	Cough.	Local exhaust.	Fresh air, rest.
•SKIN	Redness.	Protective gloves.	Rinse and then wash skin with water and soap.
•EYES	Redness.	Safety goggles	Rinse with plenty of water (remove contact lenses if easily possible).
•INGESTION		Do not eat, drink, or smoke during work.	Rinse mouth. Give one or two glasses of water to drink.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Personal protection: particulate filter adapted to the airborne concentration of the substance. Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Wash away remainder with plenty of water. 8-270°C, 26, 31

°C and flash point=154°C, but substance is solid

Signal: Warning
Causes mild skin irritation
Causes eye irritation

SEE IMPORTANT INFORMATION ON BACK

ICSC: 1745

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.

Important Data

PHYSICAL STATE; APPEARANCE:
COLOURLESS TO WHITE CRYSTALLINE POWDER.

PHYSICAL DANGERS:
Dust explosion possible if in powder or granular form, mixed with air.

CHEMICAL DANGERS:
The substance decomposes on heating producing nitrogen oxides. The solution in water is a weak base. Reacts with strong reducing agents causing fire hazard. 31; pH=9-9.5; ammable gases (CAMEO)

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established.
MAK not established.

ROUTES OF EXPOSURE:

INHALATION RISK:
No indication can be given about the rate in which a harmful concentration of this substance in the air is reached.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is mildly irritating to the eyes and the skin. iluted in water

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:

PHYSICAL
PROPERTIES

Boiling point: 268-270°C
Melting point: 102-107°C
Density: 1.1 g/cm³
Solubility in water, g/100 ml at 21.5°C: 76.5
(good)

Vapour pressure, Pa at 20°C: 0.042
Flash point: 154°C
Auto-ignition temperature: 400°C
Octanol/water partition coefficient as log Pow: -0.78

ENVIRONMENTAL
DATA

N O T E S

ADDITIONAL INFORMATION

ICSC: 1745	1,3-DIMETHYLUREA
(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.