ICSC 1745 - 1,3-DIMETHYLUREA

1,3-DIMETHYLUREA	ICSC: 1745 (November 2009)
N,N'-Dimethylurea sym-Dimethylurea N,N'-Dimethylharnstoff

CAS #: 96-31-1

EC Number: 202-498-7

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Combustible. Gives off irritating or toxic fumes (or gases) in a fire. Finely dispersed particles form explosive mixtures in air.	NO open flames.	Use carbon dioxide, water spray.

PREVENT DISPERSION OF DUST!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Cough.	Use local exhaust.	Fresh air, rest.
Skin	Redness.	Protective gloves.	Rinse and then wash skin with water and soap.
Eyes	Redness.	Wear 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	CLASSIFICATION & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Wash away remainder with plenty of water.	According to UN GHS Criteria WARNING Causes mild skin irritation Causes eye irritation Transportation UN Classification
STORAGE

PACKAGING

1,3-DIMETHYLUREA

ICSC: 1745

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS-TO-WHITE CRYSTALLINE POWDER. Physical dangers Dust explosion possible if in powder or granular form, mixed with air. Chemical dangers Decomposes on heating. This produces nitrogen oxides. The solution in water is a weak base. Reacts with strong reducing agents. This generates fire hazard.	Formula: (CH₃NH)₂CO/C₃H₈N₂0 Molecular mass: 88.1 Boiling point: 268-270°C Melting point: 102-107°C Density: 1.1 g/cm³ Solubility in water, g/100ml 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

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS-TO-WHITE CRYSTALLINE POWDER.

Physical dangers
Dust explosion possible if in powder or granular form, mixed with air.

Chemical dangers
Decomposes on heating. This produces nitrogen oxides. The solution in water is a weak base. Reacts with strong reducing agents. This generates fire hazard.

Formula: (CH₃NH)₂CO/C₃H₈N₂0
Molecular mass: 88.1
Boiling point: 268-270°C
Melting point: 102-107°C
Density: 1.1 g/cm³
Solubility in water, g/100ml 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

EXPOSURE & HEALTH EFFECTS
Routes of exposure Effects of short-term exposure The substance is mildly irritating to the eyes and skin.	Inhalation risk No indication can be given about the rate at which a harmful concentration of this substance in the air is reached. Effects of long-term or repeated exposure

EXPOSURE & HEALTH EFFECTS

Routes of exposure

Effects of short-term exposure
The substance is mildly irritating to the eyes and skin.

Inhalation risk
No indication can be given about the rate at which a harmful concentration of this substance in the air is reached.

Effects of long-term or repeated exposure

OCCUPATIONAL EXPOSURE LIMITS

ENVIRONMENT

NOTES

ADDITIONAL INFORMATION

EC Classification

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    See Also:
       Toxicological Abbreviations