N,N′-Dimethyl-1,3-propanediamine
N,N′-Dimethyl-1,3-propanediamine (CAS: 111-33-1) is an organic chemical compound with the molecular formula CH₃NHCH₂CH₂CH₂NHCH₃ and a molecular weight of 102.18 g/mol. This diamine is recognised for its utility as a building block in chemical synthesis. It serves as a valuable intermediate in the production of various organic compounds, particularly within the realms of nitrogen-containing molecules and polyamines.
- IUPAC
- 1,3-Bis(methylamino)propane,N,N′-Dimethyltrimethylenediamine
- Synonyms
- 111-33-11,3-Bis(methylamino)propaneN,N′-DimethyltrimethylenediamineCH₃NHCH₂CH₂CH₂NHCH₃

Organic Synthesis Intermediate
N,N′-Dimethyl-1,3-propanediamine is employed as a versatile building block in the synthesis of complex organic molecules. Its diamine structure allows for diverse reactions, making it suitable for creating novel chemical entities.
Research and Development
This compound is utilised in research laboratories for the development of new materials and chemical processes. Its specific functional groups offer unique properties for experimental chemistry.
Production of Nitrogen Compounds
It serves as a precursor in the synthesis of various nitrogen-containing organic compounds. These can include pharmaceuticals, agrochemicals, or specialty polymers.
| Molecular weight | 102.18 |
|---|---|
| Linear formula | CH3NHCH2CH2CH2NHCH3 |
| Assay | ≥97.0% (GC) |
| Boiling point | 145 °C(lit.) |
| Density | 0.817 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.438(lit.)n20/D 1.438 |


Hazard statements
- H225Highly flammable liquid and vapour
- H314Causes severe skin burns and eye damage
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Faceshields, full-face respirator (US), Gloves, Goggles, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 20 °C / 68 °F |
| Transport (UN / ADR) | UN 2733PSN2 8(3) / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | F,C |
| Risk statements (R) | 11-34 |
| Safety statements (S) | 26-36/37/39-45 |
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 N,N′-Dimethyl-1,3-propanediamine used for?
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N,N′-Dimethyl-1,3-propanediamine is primarily used as a building block in organic synthesis and in research and development for creating various nitrogen compounds and polyamines.
What are the CAS number and formula for N,N′-Dimethyl-1,3-propanediamine?
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The CAS number is 111-33-1, and the linear formula is CH₃NHCH₂CH₂CH₂NHCH₃.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies N,N′-Dimethyl-1,3-propanediamine with an assay of ≥97.0% (GC). We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade.
How should N,N′-Dimethyl-1,3-propanediamine be handled?
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N,N′-Dimethyl-1,3-propanediamine is a flammable liquid and causes severe skin burns and eye damage. Handle with appropriate personal protective equipment, including gloves, eye protection, and respiratory protection, in a well-ventilated area. It has a flash point of 20 °C (68 °F).
Is N,N′-Dimethyl-1,3-propanediamine a controlled substance?
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Based on the provided data, there is no indication that N,N′-Dimethyl-1,3-propanediamine is a controlled substance.
How is N,N′-Dimethyl-1,3-propanediamine packed, shipped, and exported?
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N,N′-Dimethyl-1,3-propanediamine is classified as UN 2733, AMINES, LIQUID, CORROSIVE, FLAMMABLE, N.O.S. (or Trimethylenediamine, N,N'-dimethyl-), 8 (3), PG II. Tech Serve Solutions adheres to all international regulations for the safe packing, shipping, and export of this chemical.
How can I request a sample or quote for N,N′-Dimethyl-1,3-propanediamine?
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To request a sample or obtain a quotation, please contact our sales team through the website or by phone, providing your specific requirements.
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