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Product Description
1,3-Dimercaptopropane CAS #109-80-8
1, 3-dimercaptopropane is usually a colorless transparent liquid at room temperature. However, due to its easy oxidation and other reasons, it may be slightly yellow after long-term storage.
It is a liquid state at room temperature and atmospheric pressure, with a certain fluidity, its density is slightly larger than water, slightly soluble in water, can be mixed in ethanol, ether, benzene, chloroform and other organic solvents.

Product Name: | 1,3-Dimercaptopropane |
Synonyms: | 1,3-Propanedimercaptan;1,3-propyldimercaptan;NDR-132;FEMA 3588;DITHIOTRIMETHYLENEGLYCOL;1,3-DIMERCAPTOPROPANE;1,3-PROPANEDITHIOL;propane-1,3-dithiol |
CAS: | 109-80-8 |
MF: | C3H8S2 |
MW: | 108.23 |
EINECS: | 203-706-9 |
Product Categories: | Building Blocks;Chemical Synthesis;Contact Printing;Dithiols;Materials Science;Micro/NanoElectronics;thiol Flavor;Organic Building Blocks;Self Assembly &;Self-Assembly Materials;Sulfur Compounds;Thiols;Thiols/Mercaptans |
Mol File: | 109-80-8.mol |
1,3-Dimercaptopropane Chemical Properties |
Melting point | -79 °C (lit.) |
Boiling point | 169 °C (lit.) |
density | 1.078 g/mL at 25 °C (lit.) |
vapor density | >1 (vs air) |
vapor pressure | 5 mm Hg ( 37.7 °C) |
refractive index | n20/D1.539(lit.) |
FEMA | 3588 | 1,3-PROPANEDITHIOL |
Fp | 138 °F |
storage temp. | Store below +30°C. |
form | Liquid |
pka | 9.86±0.10(Predicted) |
color | Clear light yellow |
Specific Gravity | 1.078 |
Odor | at 0.10 % in propylene glycol. meaty sulfurous |
Odor Type | meaty |
biological source | synthetic |
Water Solubility | <0.1 g/100 mL at 21 ºC |
JECFA Number | 535 |
Merck | 14,7801 |
BRN | 1071197 |
Stability: | Stable. Incompatible with oxidizing agents, bases, reducing agents, alkali metals. Store cool. |
LogP | 1.70 |
CAS DataBase Reference | 109-80-8(CAS DataBase Reference) |
NIST Chemistry Reference | 1,3-Propanedithiol(109-80-8) |
EPA Substance Registry System | 1,3-Propanedithiol (109-80-8) |
Product Usage
1,3-Propanedithiol is used as a reagent in the preparation of thioketals and thioacetals. It acts as a flavoring agent. It is used as a precursor in the synthesis of cyclic dithioacetal (1,3-dithiane) derivatives of carbonyl compounds. It is involved in the preparation of diiron propanedithiolate hexacarbonyl by reacting reaction with triiron dodecacarbonyl. Further, it is used for the protection of aldehydes and ketones through their reversible formation of dithianes. In addition to this, it reacts with metal ions to form chelate rings.
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