59395-29-8

Basic information

• Product Name: 2,5,5-trimethyl-1,2,4-triazolidine-3-thione
• Synonyms: 1,2,4-triazolidine-3-thione, 2,5,5-trimethyl-; 2,5,5-Trimethyl-1,2,4-triazolidine-3-thione
• CAS NO: 59395-29-8
• Molecular Formula: C₅H₁₁N₃S
• Molecular Weight: 145.2259
• Mol File: 59395-29-8.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 160.7°C at 760 mmHg
• Flash Point: 51°C
• Density: 1.2g/cm³
• Vapor Pressure: 2.36mmHg at 25°C
• Refractive Index: 1.603
• CAS DataBase Reference: 2,5,5-trimethyl-1,2,4-triazolidine-3-thione(CAS DataBase Reference)
• NIST Chemistry Reference: 2,5,5-trimethyl-1,2,4-triazolidine-3-thione(59395-29-8)
• EPA Substance Registry System: 2,5,5-trimethyl-1,2,4-triazolidine-3-thione(59395-29-8)

Safety Data

• Hazardous Substances Data: 59395-29-8(Hazardous Substances Data)

Upstream product

• 5771-02-8 N-isopropylidene-N'-methylhydrazine 
• 333-20-0 potassium thioacyanate 

Relevant articles and documents

Ring-chain tautomerism of N-substituted thiosemicarbazones

The condensation products from 4,4-dimethyl- and 2,4,4-trimethylthiosemicarbazides and aldehydes or ketones, as well as those from 2-methyl- and 2,4-disubstituted thiosemicarbazides and aldehydes have the thiosemicarbazone structure, while ketones react with 2-methyl- or 2,4-dialkylthiosemicarbazides to form 1,2,4- triazolidine- 3-thiones. Both thiosemicarbazones and 1,2,4- triazolidine- 3-thiones in trifluoroacetic acid solution yield 1,3,4-thiadiazolidine-2-iminium salts. Their deprotonation by pyridine leads to thiosemicarbazones, including otherwise inaccessible 2-methyl- and 2,4-disubstituted ketone thiosemicarbazones. The mass-spectrometric investigation of these compounds also suggests presence of their tautomers in the gas phase.