GHS Classification: Flammable Liquid (GHS02), Acute Toxicity (GHS06), Exclamation Mark (GHS07)
Hazard Statements: Flammable liquid and vapor; harmful if swallowed or inhaled; causes skin irritation; causes serious eye irritation; may cause respiratory irritation.
UN Number: UN 1993
Hazard Class: 3 (Flammable Liquids), 6.1 (Toxic Substances)
Packing Group: III
GTC-669

Organic Halides
Trimethylene Dichloride
- CAS No.
- 142-28-9
- Catalogue ID
- GTC-669
Trimethylene Dichloride, CAS 142-28-9. Source-derived identification, physical data and applications are provided for catalogue reference; request the current specification, COA and SDS for the required grade.
1,3-Dichloropropane; Propane, 1,3-dichloro-; Trimethylene Chloride
Supplied catalogue source: GTC-669 · Page 41
Reference data — confirm before ordering or use
The information below is a structured migration from the supplied catalogue snapshot. It is not a current product specification, COA or SDS. Confirm the actual supplier, grade, batch documents, classification, packing and destination requirements for your enquiry.
Basic Information of Trimethylene Dichloride
| CAS No.: | 142-28-9 |
|---|---|
| EC No.: | 205-531-3 |
| Linear Formula: | C₃H₆Cl₂ |
| Molecular Weight: | 112.99 |
| Appearance: | Transparent Liquid |
| Odor: | Mild, ethereal odor. |
| Melting point: | −99 °C(lit.) |
| Boiling point: | 120-122 °C(lit.) |
| Density: | 1.19 g/mL at 25 °C(lit.) |
| Solubility: | Slightly soluble in water; miscible with most organic solvents (e.g., ethanol, ether, acetone). |
| Flash point: | 90 °F |
| Nature: | Flammable liquid and vapor, harmful if swallowed or inhaled, irritating to skin and eyes. |
| RIDADR: | UN 1993 3/PG 3 |
| Chemical Structure: | ![]() |
Our commitment to delivering high-purity Trimethylene Dichloride ensures a reliable and efficient component for your complex manufacturing and synthesis processes.
Primary Applications of Trimethylene Dichloride (1,3-Dichloropropane)
Trimethylene Dichloride's symmetrical structure and reactive halogen atoms make it an incredibly valuable and versatile chemical intermediate with applications across numerous sectors:
Pharmaceutical Synthesis:
It is a crucial building block in the synthesis of various active pharmaceutical ingredients (APIs). It's used to introduce specific three-carbon chains or form cyclic structures essential for drug molecules.
Specialty Chemicals Production:
Trimethylene Dichloride serves as a key intermediate in the manufacture of a wide range of specialty chemicals, including those used in agrochemicals, dyes, and other fine chemical industries.
Polymer and Resin Precursor:
It can be utilized in the synthesis of certain polymers and resins, where it contributes to the polymer backbone or introduces specific functionalities.
Synthesis of Cyclic Compounds:
Its bifunctional nature makes it ideal for cyclization reactions, allowing for the formation of various three-membered and larger ring structures in organic chemistry.
Laboratory Reagent:
Trimethylene Dichloride is a valuable reagent in academic and industrial research for developing new compounds and exploring novel chemical reactions, particularly in areas involving carbon-chain elongation and ring formation.
Exceptional Purity & Consistency: Our Trimethylene Dichloride is manufactured to stringent purity specifications, critical for maximizing yields in complex syntheses and ensuring consistent quality in your downstream products, especially for sensitive pharmaceutical applications.
Commitment to Quality & Safety: We adhere to the highest industry standards for quality management, safety, and environmental responsibility across all our operations, ensuring peace of mind for our clients handling this versatile material.
Hazards Classification for Trimethylene Dichloride (CAS No. 142-28-9)



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Include the required grade or purity, quantity, preferred packing, destination country/port and required document set.
- 01Current specification
- 02Batch or sample COA
- 03Product- and supplier-specific SDS
- 04Packing and shipping review
