ICSC 0680 - THIOUREA

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THIOUREA	ICSC: 0680 (March 2001)
Thiocarbamide Isothiourea

CAS #: 62-56-6

UN #: 2811

EC Number: 200-543-5

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Combustible. Gives off irritating or toxic fumes (or gases) in a fire. Risk of fire and explosion on contact with acrolein.	NO open flames.	Use water spray, foam, powder, carbon dioxide. In case of fire: keep drums, etc., cool by spraying with water.

AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Cough.	Avoid inhalation of dust and mist. Use local exhaust or breathing protection.	Fresh air, rest. Refer for medical attention.
Skin		Protective gloves. Protective clothing.	Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention .
Eyes	Redness.	Wear face shield or eye protection in combination with breathing protection if powder.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Ingestion		Do not eat, drink, or smoke during work. Wash hands before eating.	Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention .

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Evacuate danger area! Consult an expert! Personal protection: chemical protection suit and particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Do NOT wash away into sewer. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations.	According to UN GHS Criteria Transportation UN Classification UN Hazard Class: 6.1; UN Pack Group: III
STORAGE
Separated from acids, food and feedstuffs, acrolein and oxidants. Cool. Well closed. Keep in a well-ventilated room.
PACKAGING
Marine pollutant. Do not transport with food and feedstuffs.

THIOUREA

ICSC: 0680

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance WHITE CRYSTALS OR POWDER. Physical dangers No data. Chemical dangers Decomposes on heating. This produces toxic fumes of nitrogen oxides and sulfur oxides. Reacts violently with acrolein, strong acids and strong oxidants.	Formula: CH₄N₂S / H₂NCSNH₂ Molecular mass: 76.1 Melting point: 182°C Density: 1.4 g/cm³ Solubility in water: moderate Octanol/water partition coefficient as log Pow: -2.38/-0.95

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
WHITE CRYSTALS OR POWDER.

Physical dangers
No data.

Chemical dangers
Decomposes on heating. This produces toxic fumes of nitrogen oxides and sulfur oxides. Reacts violently with acrolein, strong acids and strong oxidants.

Formula: CH₄N₂S / H₂NCSNH₂
Molecular mass: 76.1
Melting point: 182°C
Density: 1.4 g/cm³
Solubility in water: moderate
Octanol/water partition coefficient as log Pow: -2.38/-0.95

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation of its aerosol and by ingestion. Effects of short-term exposure The substance is irritating to the eyes.	Inhalation risk Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly. Effects of long-term or repeated exposure Repeated or prolonged contact may cause skin sensitization. The substance may have effects on the thyroid. This substance is possibly carcinogenic to humans.

EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation of its aerosol and by ingestion.

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

Inhalation risk
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly.

Effects of long-term or repeated exposure
Repeated or prolonged contact may cause skin sensitization. The substance may have effects on the thyroid. This substance is possibly carcinogenic to humans.

OCCUPATIONAL EXPOSURE LIMITS
MAK: sensitization of skin (SH); photosentization (SP); carcinogen category: 3

ENVIRONMENT
The substance is toxic to aquatic organisms.

NOTES
Do NOT take working clothes home.

ADDITIONAL INFORMATION

EC Classification
Symbol: Xn, N; R: 22-40-51/53-63; S: (2)-36/37-61

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