2,4-Dithiobiuret
Structural Formula Vector Image
Title: 2,4-Dithiobiuret
CAS Registry Number: 541-53-7
CAS Name: Thioimidodicarbonic diamide
Molecular Formula: C2H5N3S2
Molecular Weight: 135.21
Percent Composition: C 17.77%, H 3.73%, N 31.08%, S 47.43%
Line Formula: NH2CSNHCSNH2
Literature References: Prepd by the interaction of dicyandiamide and hydrogen sulfide in inert solvents under pressure: Sperry, US 2371112 (1945 to Am. Cyanamid). Review: Kurzer, Chem. Rev. 56, 138-144, 179-181 (1956).
Properties: Monoclinic or triclinic crystals. Poisonous when ingested! Apparent bulk density 1.522 g/ml at 30°. Dec 181°. uv max: 225, 280 nm (log e 2.0, 2.2). Solubility at 27° = 0.27 g/100 ml water; 2.2 g/100 g ethanol; 16 g/100 g acetone; about 34 g/100 g Cellosolve. Solubility in boiling water about 8.0%. pH of satd aq soln at 30° = 5.8. Soluble in alkalies with formation of water-soluble salts. Solubility in 1% NaOH = 3.6 g/100 g soln; in 5% NaOH = 16 g/100 g; in 10% NaOH = 29 g/100 g.
Absorption maximum: uv max: 225, 280 nm (log e 2.0, 2.2)
Density: Apparent bulk density 1.522 g/ml at 30°
CAUTION: Limited animal expts suggest high toxicity due to respiratory paralysis.
Use: Plasticizer, rubber accelerator, intermediate in resin manuf, in making insecticides and rodenticides. Can be used to delay the wilting of flowers.

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