| Identification | More | [Name]
1,3-Dimercaptopropane | [CAS]
109-80-8 | [Synonyms]
1,3-DIMERCAPTOPROPANE
1,3-PROPANEDITHIOL
DITHIOTRIMETHYLENEGLYCOL
FEMA 3588
PDT
propane-1,3-dithiol
TRIMETHYLENE DIMERCAPTAN
TRIMETHYLENEDITHIOGLYCOL
TRIMETHYLENE DITHIOL
1,3-Propanedimercaptan
1,3-propyldimercaptan
NDR-132
1,3-Propandeithiol
1 3-PROPANEDITHIOL 96+%
1,3-Propanedithiol98%
trimethylene mercaptan
Propan-1,3-dithiol
1,3-PROPANEDITHIOL 99+%
1,3-PROPANEDITHIOL FEMA NO.3588
1,3-Dimercaptopropane, Trimethylene dimercaptan | [EINECS(EC#)]
203-706-9 | [Molecular Formula]
C3H8S2 | [MDL Number]
MFCD00004904 | [Molecular Weight]
108.23 | [MOL File]
109-80-8.mol |
| Chemical Properties | Back Directory | [Appearance]
colourless to slightly yellow liquid | [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)
| [FEMA ]
3588 | [refractive index ]
n20/D 1.539(lit.)
| [Fp ]
138 °F
| [storage temp. ]
2-8°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 | [Stability:]
Stable. Incompatible with oxidizing agents, bases, reducing agents, alkali metals. Store cool. | [Odor Type]
meaty | [Water Solubility ]
<0.1 g/100 mL at 21 ºC | [Detection Methods]
GC,NMR | [JECFA Number]
535 | [Merck ]
14,7801 | [BRN ]
1071197 | [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]
109-80-8(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
Xi | [Risk Statements ]
R36/37/38:Irritating to eyes, respiratory system and skin . | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S24/25:Avoid contact with skin and eyes . | [RIDADR ]
3336 | [WGK Germany ]
3
| [RTECS ]
TZ2585500
| [F ]
13 | [TSCA ]
Yes | [HazardClass ]
6.1 | [PackingGroup ]
III | [HS Code ]
29309070 |
| Hazard Information | Back Directory | [General Description]
Clear orange oil with a disagreeable odor. | [Reactivity Profile]
Organosulfides, such as 1,3-DIMERCAPTOPROPANE(109-80-8), 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. This compound may react with oxidizers, bases, reducing agents and alkali metals. | [Air & Water Reactions]
Highly flammable. Insoluble in water. | [Fire Hazard]
This chemical is combustible. | [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. |
| Questions And Answer | Back Directory | [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. |
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