International Chemical Safety Cards

THIOUREA ICSC: 0680
THIOUREA
Thiocarbamide
CH4N2S/H2NCSNH2
Molecular mass: 76.1
CAS # 62-56-6
RTECS # YU2800000
ICSC # 0680
UN # 2810
EC # 612-082-00-0
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.
Powder, water spray, foam, carbon dioxide.
EXPLOSION Risk of fire and explosion on contact with acrolein.

In case of fire: keep drums, etc., cool by spraying with water.
 
EXPOSURE
PREVENT DISPERSION OF DUST! AVOID ALL CONTACT!
IN ALL CASES CONSULT A DOCTOR!
INHALATION Cough.
Avoid inhalation of fine dust and mist. 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.
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 take to a doctor.
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 STORAGE PACKAGING & LABELLING
Do NOT wash away into sewer. Sweep spilled substance into covered containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place (extra personal protection: P2 filter respirator for harmful particles).
Separated from acids, food and feedstuffs, acrolein, oxidants.
Do not transport with food and feedstuffs.
Xn symbol
R: 22-40
S: (2-)22-24-36/37
UN Hazard Class: 6.1
UN Packing Group: III
SEE IMPORTANT INFORMATION ON BACK
ICSC: 0680 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

International Chemical Safety Cards

THIOUREA ICSC: 0680

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PHYSICAL STATE; APPEARANCE:
WHITE CRYSTALS OR POWDER.

PHYSICAL DANGERS:


CHEMICAL DANGERS:
The substance decomposes on heating producing toxic fumes of nitrogen oxides and sulfur oxides. Reacts violently with acrolein, strong acids and strong oxidants.

OCCUPATIONAL EXPOSURE LIMITS (OELs):
TLV not established.


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

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

EFFECTS OF SHORT-TERM EXPOSURE:
The substance irritates the eyes.

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.
PHYSICAL
PROPERTIES
 Boiling point (decomposes): see Notes°C
Melting point: 182°C
Relative density (water = 1): 1.4		 Solubility in water: moderate
Octanol/water partition coefficient as log Pow: -2.38/-0.95
ENVIRONMENTAL
DATA
N O T E S
Temperature of decomposition unknown in literature. The substance is combustible but no flash point is available in literature. Explosive limits are unknown in literature, although the substance is combustible and has a flash point 55°C. Do NOT take working clothes home.
ADDITIONAL INFORMATION


ICSC: 0680 THIOUREA
© IPCS, CEC, 1993
IMPORTANT LEGAL NOTICE: Neither the CEC or the IPCS nor any person acting on behalf of 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.