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| | 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/D 1.539(lit.) | | FEMA | 3588 | 1,3-PROPANEDITHIOL | | Fp | 138 °F | | storage temp. | Store below +30°C. | | pka | 9.86±0.10(Predicted) | | form | Liquid | | color | Clear light yellow | | Specific Gravity | 1.078 | | Odor | at 0.10 % in propylene glycol. meaty sulfurous | | Odor Type | meaty | | Water Solubility | <0.1 g/100 mL at 21 ºC | | Merck | 14,7801 | | JECFA Number | 535 | | 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) |
| Hazard Codes | Xi | | Risk Statements | 36/37/38 | | Safety Statements | 26-24/25 | | RIDADR | 3336 | | WGK Germany | 3 | | RTECS | TZ2585500 | | F | 13 | | TSCA | Yes | | HazardClass | 6.1 | | PackingGroup | III | | HS Code | 29309070 | | Toxicity | LD50 orally in Rabbit: > 50 - 300 mg/kg |
| | 1,3-Dimercaptopropane Usage And Synthesis |
| Application | Used as a usual flavor. | | Toxicity | GRAS(FEMA) | | Usage restriction | FEMA：baked goods, meat product, soups, snack foods, sauces, candy and sugar cream: 0.2mg/kg. | | Chemical Properties | 1,3-Propanedithiol has a sulfur, meaty odor. FEMA indicates that total dithiol added to any food should not exceed 1.0 ppm. | | Chemical Properties | colourless to slightly yellow liquid | | Occurrence | Reported found in cooked or boiled beef. | | Uses | 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. | | Definition | ChEBI: A dithiol that is propane substituted by thiol groups at positions 1 ans 3. | | General Description | Clear orange oil with a disagreeable odor. | | Air & Water Reactions | Highly flammable. Insoluble in water. | | Reactivity Profile | Organosulfides, such as 1,3-Dimercaptopropane, are incompatible with acids, diazo and azo compounds, halocarbons, isocyanates, aldehydes, alkali metals, nitrides, hydrides, and other strong reducing agents. Reactions with these materials generate heat and in many cases hydrogen gas. Many of these compounds may liberate hydrogen sulfide upon decomposition or reaction with an acid. 1,3-Dimercaptopropane may react with oxidizers, bases, reducing agents and alkali metals. | | Fire Hazard | 1,3-Dimercaptopropane is combustible. |
| | 1,3-Dimercaptopropane Preparation Products And Raw materials |
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