Propylene sulfide
Propylene sulfide (CAS: 1072-43-1), a cyclic sulfide with the chemical formula C3H6S, presents as a volatile, flammable liquid. Its molecular weight is 74.14 g/mol. As a reactive organic building block, it finds utility in chemical synthesis, particularly for introducing the thiirane moiety into more complex structures. Its applications span various research and development initiatives within the chemical industry.
- IUPAC
- Methylthiirane
- Synonyms
- Methylthiirane

Organic Synthesis Intermediate
Propylene sulfide serves as a valuable intermediate in organic synthesis, enabling the formation of sulfur-containing heterocycles and other organosulfur compounds. It is utilized in reactions requiring the introduction of a three-membered sulfur ring.
Research and Development
This compound is employed in academic and industrial research settings for exploring novel synthetic methodologies and developing new chemical entities. Its unique reactivity profile makes it a subject of interest in medicinal chemistry and materials science.
Building Block for Specialty Chemicals
As a versatile building block, propylene sulfide contributes to the synthesis of specialty chemicals, including polymers and agrochemicals. Its incorporation can impart specific functional properties to target molecules.
| Molecular weight | 74.14 |
|---|---|
| Empirical formula | C3H6S |
| Assay | ≥96.0% (GC) |
| Boiling point | 72-75 °C(lit.) |
| Density | 0.946 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.475(lit.)n20/D 1.475 |
| Storage temperature | 2-8°C |


Hazard statements
- H225Highly flammable liquid and vapour
- H301Toxic if swallowed
- H315Causes skin irritation
- H319Causes serious eye irritation
- H332Harmful if inhaled
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- P301IF SWALLOWED
- P305IF IN EYES
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 10 °C / 50 °F |
| Transport (UN / ADR) | UN 1992 3/PG 2 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | F,Xn |
| Risk statements (R) | 11-20/22-36/38 |
| Safety statements (S) | 16-26-36 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Propylene sulfide used for?
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Propylene sulfide is used as an intermediate in organic synthesis, a building block for specialty chemicals, and in research and development for creating new chemical entities and exploring synthetic methodologies.
What are the CAS number and chemical formula for Propylene sulfide?
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The CAS number for Propylene sulfide is 1072-43-1, and its chemical formula is C3H6S.
What grade and purity does Tech Serve Solutions supply for Propylene sulfide?
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Tech Serve Solutions supplies Propylene sulfide with an assay of ≥96.0% (GC). We do not represent this product as USP, BP, EP, or pharmacopoeia grade.
How should Propylene sulfide be handled safely?
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Propylene sulfide is a highly flammable liquid and vapour (H225) and is toxic if swallowed (H301). It also causes skin irritation (H315), serious eye irritation (H319), and is harmful if inhaled (H332). Handle with appropriate personal protective equipment, including eyeshields, face shields, and suitable respiratory protection, in a well-ventilated area away from ignition sources. Store at 2-8°C.
How is Propylene sulfide packed, shipped, and exported?
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Propylene sulfide is carefully packed according to international shipping regulations for hazardous materials and is available for global export by Tech Serve Solutions.
How can I request a quote or sample for Propylene sulfide?
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To request a quote or sample for Propylene sulfide, please contact our sales team through the website or by phone, providing your specific requirements.
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