THIOUREA (ICSC)

THIOUREA	ICSC: 0680

Date of Peer Review: March 2001

Thiocarbamide
Isothiourea

CAS #

62-56-6

CH₄N₂S / H₂NCSNH₂

RTECS #

YU2800000

Molecular mass: 76.1

UN #

2811

EC Index #

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.	Water spray, foam, powder, 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		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

PACKAGING & LABELLING

Evacuate danger area! Consult an expert! 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. Do NOT let this chemical enter the environment. Chemical protection suit. Personal protection: P2 filter respirator for harmful particles.

Marine pollutant. Do not transport with food and feedstuffs.
EU Classification
Symbol: Xn, N
R: 22-40-51/53-63
S: (2-)-36/37-61
UN Classification
UN Hazard Class: 6.1
UN Pack Group: III

EMERGENCY RESPONSE

STORAGE

Transport Emergency Card: TEC (R)-61GT2-III

Separated from acids, food and feedstuffs, acrolein, oxidants. Cool. Well closed. Keep in a well-ventilated room.

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities Š IPCS, CEC 2005

SEE IMPORTANT INFORMATION ON BACK

THIOUREA

ICSC: 0680

IMPORTANT DATA

PHYSICAL STATE; APPEARANCE:
WHITE CRYSTALS OR POWDER.

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:
TLV not established.
MAK: sensitization of skin (Sh); photosensitization (SP); Carcinogen category: 3B; (DFG 2005).

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 is irritating to 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

Melting point: 182°C
Density: 1.4 g/cmł
Solubility in water: moderate

Octanol/water partition coefficient as log Pow: -2.38/-0.95

ENVIRONMENTAL DATA

The substance is toxic to aquatic organisms.

NOTES

Do NOT take working clothes home. Card has been partly updated in October 2005. See sections Occupational Exposure Limits, Emergency Response.

ADDITIONAL INFORMATION

LEGAL NOTICE

Neither the CEC nor 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

Š IPCS, CEC 2005

    See Also:
       Toxicological Abbreviations
       Thiourea (CICADS 49, 2003)
       Thiourea  (IARC Summary & Evaluation, Volume 7, 1974)
       Thiourea  (IARC Summary & Evaluation, Volume 79, 2001)