[A15261] CAS 109-80-8 | 1,3-Propanedithiol, 97%

CAS : 109-80-8
UN# : UN1228
MDL : MFCD00004904
Hazard Class : 3
EINECS : 203-706-9
Packing Group : III

Other name :

Trimethylene mercaptan

Chemical Properties

Formula : HS(CH2)3SH
Formula weight : 108.23
Melting Point : -79°
Boiling Point : 168-170°
Flash point : 63°(145°F)
Density : 1.077
Refractive Index : 1.5400
Sensitivity : Ambient temperatures.
Form : Liquid
Solubility : Slightly soluble in water. Miscible with alcohol, ether, chloroform, etherMiscible with alcohol, ether, chloroform and ether. Slightly miscible with water.

Literature References

Precursor of cyclic dithioacetal (1,3-dithiane) derivatives of carbonyl compounds. The protection step is catalyzed by Lewis acids, e.g. BF3 etherate: Tetrahedron Lett., 871 (1971), TiCl4: Tetrahedron Lett., 24, 1289 (1983), Aluminum trifluoromethanesulfonate, B20785, or Indium(III)­ trifluoromethanesulfonate, 40131. Diothioacetalization can be accomplished under neutral, solvent-free conditions using Lithium trifluoromethanesulfonate, 39322, as catalyst: Tetrahedron Lett., 40, 4055 (1999). For the preparation of monocyclic dithioacetals of ß-diketones at low temperature in the presence of BF3 etherate, see: Tetrahedron, 44, 2283 (1988). Alternatively, 1,3-dithianes can be prepared by alkylation with reactive gem-dihalides under phase-transfer conditions: Liebigs Ann. Chem., 1589 (1982). For deprotection methods and uses of 1,3-dithianes as acyl anion equivalents, see: 1,3-Dithiane, A10505.

Notes

Store in a cool place. Incompatible with bases, oxidizing agents, reducing agents and alkali metals.Other References:Beilstein: 1071197Merck: 14,7801UN#: UN1228

Grade Specifications

Grade Specifications

Hazard Statements : H315-H319-H335-H227Causes skin irritation.Causes serious eye irritation.May cause respiratory irritation.Combustible liquid.
Precautionary Statements : P210-P305+P351+P338-P302+P352-P321-P405-P501aKeep away from heat/sparks/open flames/hot surfaces. – No smoking.IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.IF ON SKIN: Wash with plenty of soap and water.Specific treatment (see label).Store locked up.Dispose of contents/container in accordance with local/regional/national/international regulations.