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503-87-7

Basic Information
CAS No.: 503-87-7
Name: 2-Thiohydantoin
Article Data: 38
Molecular Structure:
Molecular Structure of 503-87-7 (2-Thiohydantoin)
Formula: C3H4 N2 O S
Molecular Weight: 116.144
Synonyms: Hydantoin,2-thio- (6CI,7CI,8CI); 2-Thiohydantoin; 2-Thioxo-4-imidazolidinone;4-Oxo-2-thioxoimidazolidine; Imidazolidin-4-one-2-thione; NSC 11772;Thiohydantoin
EINECS: 207-977-4
Density: 1.49g/cm3
Melting Point: 229-231 ºC
Boiling Point: °Cat760mmHg
Flash Point: °C
Appearance: BROWN CRYSTALLINE POWDER
Hazard Symbols:
Risk Codes: R22   
Safety: Poison by intraperitoneal route. Moderately toxic by ingestion. When heated to decomposition it emits very toxic fumes of NOx and SOx.
PSA: 73.22000
LogP: -0.35170
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Chemistry

IUPAC Name: 2-Thiohydantoin
The MF of 2-Thiohydantoin (503-87-7) is C3H4N2OS.

                       
The MW of 2-Thiohydantoin (503-87-7) is 116.14.
Synonyms of 2-Thiohydantoin (503-87-7): 2-Thioguidanthion ; 2-Thioxo-4-imidazolidinone ; 4-Imidazolidinone, 2-thioxo- ; Hydantoin, 2-thio- 
Product Categories: Ring Systems;Building Blocks;Heterocyclic Building Blocks;Imidazolines/Imidazolidines
Form: brown crystalline powder
Index of Refraction: 1.655  
Melting Point: 229-231 °C
vapor density: 4 (vs air)
Density: 1.49 g/ml
EINECS: 207-977-4

Toxicity Data With Reference

1.    

orl-rat LD50:420 mg/kg

    BJPCAL    British Journal of Pharmacology and Chemotherapy. 13 (1958),350.
2.    

orl-mus LD50:417 mg/kg

    KHFZAN    Khimiko-Farmatsevticheskii Zhurnal. Chemical Pharmaceutical Journal. 24 (4)(1990),32.
3.    

ipr-mus LD50:100 mg/kg

    NTIS**    National Technical Information Service. (Springfield, VA 22161) (Formerly U.S. Clearinghouse for Scientific and Technical Information) AD277-689 .

Consensus Reports

Reported in EPA TSCA Inventory.

Safety Profile

Poison by intraperitoneal route. Moderately toxic by ingestion. When heated to decomposition it emits very toxic fumes of NOx and SOx.
Safety information of 2-Thiohydantoin (503-87-7):
Hazard Codes  Xn
Risk Statements 
20/21/22  Harmful by inhalation, in contact with skin and if swallowed
Safety Statements 
36  Wear suitable protective clothing
WGK Germany  3
RTECS  MU4200000