Molecular Formula: C₄H₄N₂OS
Formula Weight: 128.15
Melting point: >300 ^°C(lit.)
Flash Point of 2-THIOURACIL (141-90-2): 157.7 ^°C  
Boiling Point: 337.2 ^°C at 760 mmHg
Density of 2-THIOURACIL (141-90-2): 1.46 g/cm³ 
Vapour Pressure: 5.45E-05 mmHg at 25^°C  
storage temp. : 2-8^°C
Index of Refraction: 1.677  
Water Solubility : 0.5 g/L
PHYSICAL STATE of 2-THIOURACIL (141-90-2): white to pale yellow crystalline powder

2-THIOURACIL (141-90-2) is the basic structure of several drugs used to treat hyperthyroidism. In industry 2-THIOURACIL (141-90-2) is used in galvanization as a grain refining agent.

IARC Cancer Review: Group 3 IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 7 ,1987,p. 56.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Animal Sufficient Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 7 ,1974,p. 85.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) . Reported in EPA TSCA Inventory. EPA Genetic Toxicology Program.

Safety: CAUTION: May irritate eyes, skin, and respiratory tract
Hazard Codes : Xn (Harmful)
Risk Statements : 40 (Limited evidence of a carcinogenic effect)
Safety Statements : 36/37 (Wear suitable protective clothing and gloves)
WGK Germany : 3
RTECS : YR1575000
HS Code : 29335995
Moderately toxic by ingestion. Human teratogenic effects by unspecified routes: developmental abnormalities of the central nervous system, craniofacial area, and endocrine system. Human reproductive effects by unspecified route: effects on newborn, including viability index changes. Experimental teratogenic effects. Other experimental reproductive effects. Questionable carcinogen with experimental neoplastigenic and tumorigenic data. Mutation data reported. When heated to decomposition it emits very toxic fumes of NO_x and SO_x. Used in the treatment of hyperthyroidism, angina pectoris, and congestive heart failure. See also MERCAPTANS and KETONES.

PURITY: 97.0% min

Storage: Store in a cool, dry, well-ventilated area away from incompatible substances. Hormones and antibiotics room. Store in a tightly closed container. Keep container closed when not in use.