1,3-Propanediol
CAS 504-63-2
EC 207-997-3
Formula C3H8O2
MW 76.09 g/mol
Alcohols & Glycols Plastics & PolymersPersonal Care & CosmeticsFood & NutritionPharmaceuticals & Healthcare Humectant & MoisturizingCross-linking & CuringSolvent & CarrierpH Regulation & BufferingAntioxidant & Stabilizer
Description
1,3-Propanediol (CAS 504-63-2), also referred to as propane-1,3-diol, PDO, or by synonyms including NSC 65426 and AKOS 90317, is a short-chain diol belonging to the glycol family. It carries no E-code designation and is classified under HS code 29053980 for customs purposes.
In polytrimethylene terephthalate (PTT) polymer production, it functions as a diol monomer that reacts with terephthalic acid to form ester linkages, directly influencing fiber elasticity and resilience. In personal care formulations, it acts as a humectant by binding water molecules within the skin matrix, and serves as a low-viscosity carrier solvent for active ingredients.
This material is sourced in cosmetic, pharmaceutical, and food-grade specifications, with compliance available against Ph.Eur., FCC, and REACH registration requirements. It is supplied as a liquid in drums and IBC containers. Buyers should confirm grade-specific documentation, including CoA and SDS, prior to procurement.
In polytrimethylene terephthalate (PTT) polymer production, it functions as a diol monomer that reacts with terephthalic acid to form ester linkages, directly influencing fiber elasticity and resilience. In personal care formulations, it acts as a humectant by binding water molecules within the skin matrix, and serves as a low-viscosity carrier solvent for active ingredients.
This material is sourced in cosmetic, pharmaceutical, and food-grade specifications, with compliance available against Ph.Eur., FCC, and REACH registration requirements. It is supplied as a liquid in drums and IBC containers. Buyers should confirm grade-specific documentation, including CoA and SDS, prior to procurement.
Physical Properties
| Melting Point | -26.7 °C |
| Boiling Point | 215 °C |
| Density | 1.0538 g/cm³ |
| Flash Point | >230 °F |
| Appearance | Colorless oil liquid; odorless. Soluble in water, alcohol, and ether. Combustible. |
| Color | Clear |
| Form | Oily Liquid |
| Water Solubility | 100 g/L |
| Vapor Pressure | 0.8 mm Hg ( 20 °C) |
| Refractive Index | n 20/D 1.440(lit.) |
| pH | 4.5-7.0 (100g/l, H2O, 20℃) |
| Log P | -0.71 at 20℃ |
Safety & Handling (Learn More)
Warning GHS07
H
H315
P
P264P280P321P302+P352P332+P317P362+P364
Trade & Regulatory
| HS Code | 29053980 |
| Storage Class | 10 - Combustible liquids |
| WGK (Germany) | 1 |
Other Names
Propane-1,3-DiolHO(CH2)3OHCH2(CH2OH)2(HOCH2)2CH2PDOω-Propanediol1,3-PROPANDIOL
Related Products
Raw Materials
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