1,3-Propanediol (PDO) is primarily utilized to manufacture a new kind of polyester, polytrimethylene terephthalate (PTT). PTT combines the chemical stability of polyethylene terephthalate (PET) with excellent resilience and anti-pollution properties, offering promising applications in the textile industry.
1,3-Propanediol Chemical Properties
| Melting point | -27 °C (lit.) |
| Boiling point | 214 °C/760 mmHg (lit.) |
| Density | 1.053 g/mL at 25 °C (lit.) |
| Vapor pressure | 0.8 mm Hg ( 20 °C) |
| Refractive index | n20/D 1.440(lit.) |
| FEMA | 4753 | 1,3-PROPANEDIOL |
| Fp | >230 °F |
| Storage temp | Store below +30°C. |
| Solubility | H2O: soluble |
| Pka | 14.46±0.10(Predicted) |
| Form | Oily Liquid |
| Color | Clear |
| PH | 4.5-7.0 (100g/l, H2O, 20℃) |
| Explosive limit | 2.5%(V) |
| Water Solubility | 100 g/L |
| Merck | 14,9714 |
| BRN | 969155 |
| Dielectric constant | 35.0（20℃） |
| InChIKey | YPFDHNVEDLHUCE-UHFFFAOYSA-N |
| LogP | -0.71 at 20℃ |
| CAS DataBase Reference | 504-63-2(CAS DataBase Reference) |
| NIST Chemistry Reference | 1,3-Propanediol(504-63-2) |
| EPA Substance Registry System | 1,3-Propanediol (504-63-2) |
Safety Information
| Hazard Codes | Xi |
| Risk Statements | 38 |
| Safety Statements | 23-24/25 |
| WGK Germany | 1 |
| RTECS | TY2010000 |
| Autoignition Temperature | 405 °C |
| TSCA | Yes |
| HS Code | 29053980 |
| Hazardous Substances Data | 504-63-2(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: 15670 mg/kg LD50 dermal Rabbit > 20000 mg/kg |
Product Application of 1,3-Propanediol (CAS#504-63-2)
Used in organic synthesis, including the production of various pharmaceuticals, new antioxidants, and antifreeze. Acts as a solvent and a standard in gas chromatography analysis. It is also employed in the synthesis of new polyester PTT, pharmaceutical intermediates, and other organic compounds.
