1,3-Propanediol
- CAS No.
- 504-63-2
- Chemical Name:
- 1,3-Propanediol
- Synonyms
- PDO;PROPANE-1,3-DIOL;1,3-PROPANDIOL;TRIMETHYLENE GLYCOL;1,3-PROPYLENE GLYCOL;PROPAN-1,3-DIOL;Dihydroxypropane;1,3-PROPANEDIOL FOR SYNTHESIS;1.3-PDO;nsc65426
- CBNumber:
- CB5853689
- Molecular Formula:
- C3H8O2
- Molecular Weight:
- 76.09
- MDL Number:
- MFCD00002949
- MOL File:
- 504-63-2.mol
- MSDS File:
- SDS
| Product description | Number | Pack Size | Price |
| 1,3-Propanediol 98% | P50404 | 100g | $96.3 |
| 1,3-Propanediol pharmaceutical secondary standard, certified reference material | PHR3167 | 1ML | $200 |
| 1,3-Propanediol for synthesis | 8.07481 | 250ML | $93.6 |
| 1,3-Propanediol for synthesis | 8.07481 | 1L | $316 |
| 1,3-Propanediol United States Pharmacopeia (USP) Reference Standard | 1570483 | 1ml | $506 |
| More product size | |||
| 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 |
n |
| FEMA | 4753 | 1,3-PROPANEDIOL |
| Flash point | >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℃) |
| Relative density, gas (air=1) | 1,053 g/mL |
| Viscosity | 44.923mm2/s |
| explosive limit | 2.5%(V) |
| Water Solubility | 100 g/L |
| Merck | 14,9714 |
| BRN | 969155 |
| Dielectric constant | 35.0（20℃） |
| Cosmetics Ingredients Functions |
SOLVENT VISCOSITY CONTROLLING |
| InChI | 1S/C3H8O2/c4-2-1-3-5/h4-5H,1-3H2 |
| InChIKey | YPFDHNVEDLHUCE-UHFFFAOYSA-N |
| SMILES | OCCCO[H] |
| LogP | -0.71 at 20℃ |
| CAS DataBase Reference | 504-63-2(CAS DataBase Reference) |
| FDA UNII | 5965N8W85T |
| NIST Chemistry Reference | 1,3-Propanediol(504-63-2) |
| EPA Substance Registry System | 1,3-Propanediol (504-63-2) |
| UNSPSC Code | 41116107 |
| NACRES | NA.24 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H315-H227 | |||||||||
| Precautionary statements | P501-P210-P264-P280-P302+P352-P370+P378-P362+P364-P332+P313-P403+P235 | |||||||||
| PPE | Eyeshields, Gloves | |||||||||
| Hazard Codes | Xi | |||||||||
| Risk Statements | 38 | |||||||||
| Safety Statements | 23-24/25 | |||||||||
| WGK Germany | 1 | |||||||||
| RTECS | TY2010000 | |||||||||
| Autoignition Temperature | 405 °C | |||||||||
| TSCA | TSCA listed | |||||||||
| HS Code | 29053980 | |||||||||
| Storage Class | 10 - Combustible liquids | |||||||||
| Hazardous Substances Data | 504-63-2(Hazardous Substances Data) | |||||||||
| Toxicity | LD50 orally in Rabbit: 15670 mg/kg LD50 dermal Rabbit > 20000 mg/kg | |||||||||
| NFPA 704 |
|
1,3-Propanediol price More Price(33)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | P50404 | 1,3-Propanediol 98% | 504-63-2 | 100g | $96.3 | 2025-07-31 | Buy |
| Sigma-Aldrich | PHR3167 | 1,3-Propanediol pharmaceutical secondary standard, certified reference material | 504-63-2 | 1ML | $200 | 2025-07-31 | Buy |
| Sigma-Aldrich | 8.07481 | 1,3-Propanediol for synthesis | 504-63-2 | 250ML | $93.6 | 2025-07-31 | Buy |
| Sigma-Aldrich | 8.07481 | 1,3-Propanediol for synthesis | 504-63-2 | 1L | $316 | 2025-07-31 | Buy |
| Sigma-Aldrich | 1570483 | 1,3-Propanediol United States Pharmacopeia (USP) Reference Standard | 504-63-2 | 1ml | $506 | 2025-07-31 | Buy |
1,3-Propanediol Chemical Properties,Uses,Production
Chemical Properties
1,3-Propanediol, an isomer of propylene glycol, is a viscous, colorless, odorless, hygroscopic liquid that has a brackish irritating taste. miscible with various solvents such as water, ethanol, acetone, chloroform (chloroform) and ether, and is insoluble in benzene. Combustible.
Uses
1,3-Propanediol is used as a solvent for thin film preparations, in the production of polymers such as polytrimethylene terephthalate, adhesives, laminates, coatings, moldings, aliphatic polyesters, as an antifreeze and in wood paint. It also acts as a reagent for vinyl epoxide synthon, for epoxide ring-opening, for polymerization reactions and for natural product syntheses.
Definition
ChEBI: Propane-1,3-diol is the simplest member of the class of propane-1,3-diols, consisting of propane in which one hydrogen from each methyl group is substituted by a hydroxy group. A colourless, viscous, water-miscible liquid with a high (210℃) boiling point, it is used in the synthesis of certain polymers and as a solvent and antifreeze. It has a role as a protic solvent and a metabolite.
Application
1,3-Propanediol /PDO/ is mainly used for making polytrimethylene terephthalate polymer, which is used in fibers and fabrics, for example, carpets, textiles, engineering thermoplastics, nonwovens, films, and monofilaments. PDO finds also use as chain extender in thermoplastic polyurethanes, where it contributes to improved thermal, hydrolytic and dimensional stability. In adipate polyesters with other diols these diols are partly substituted by 1,3-propanediol to break crystallinity in order to obtain liquid polyester polyols. In polyesters for powder coatings PDO improves the flexibility but lowers the glass transition temperature somewhat. PDO finds also uses in cosmetics and personal care products, engine coolants, and solvents for ink-jet and screen inks.
Biosynthesis
1,3-Propanediol (1,3-PDO) can be produced by fermentation from glycerol, with different strains such as Klebsiella pneumoniae, Clostridium butyricum, Clostridium pasteurianum, and Citrobacter freundii. Drawbacks of industrial fermentation using these strains are strong inhibition of 1,3-PDO production and by-products during fermentation.
Flammability and Explosibility
Non flammable
Synthesis
1,3-Propanediol is produced commercially by Degussa starting from acrolein.
CH2CHCHO + H2O → HOHCH2CH2CHO
HOHCH2CH2CHO + H2 → HOHCH2CH2CH2OH
The addition of water under mild acidic conditions gives 3-hydroxypropionaldehyde with high selectivity. Preferentially buffer solutions with a pH 4-5 or weak acidic ion exchange resins are used as catalysts. Further hydrogenation of this aqueous solutions gives 1,3-propanediol. There is an alternative route via hydroformylation of ethylene oxide and subsequent hydrogenation of the intermediate 3-hydroxypropionaldehyde.
Purification Methods
Dry this diol with K2CO3 and distil it under reduced pressure. More extensive purification involves conversion with benzaldehyde to 2-phenyl-1,3-dioxane (m 47-48o) which is subsequently decomposed by shaking with 0.5M HCl (3mL/g) for 15minutes and standing overnight at room temperature. After neutralisation with K2CO3, the benzaldehyde is removed by steam distillation and the diol is recovered from the remaining aqueous solution by continuous extraction with CHCl3 for 1day. The extract is dried with K2CO3, the CHCl3 is evaporated and the diol is distilled. [Foster et al. Tetrahedron 6 177 1961, Beilstein 1 IV 2493.]
1,3-Propanediol Preparation Products And Raw materials
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Hubei Ipure Biology Co., Ltd | +8613367258412 | ada@ipurechemical.com | China | 10236 | 58 |
| Zouping mingyuan import & export trading co., ltd | +86-0543-2240078 +8618364991597 | myzhao793@163.com | China | 981 | 58 |
| Hebei Chuanghai Biotechnology Co., Ltd | +8615350571055 | Sibel@chuanghaibio.com | China | 8753 | 58 |
| Shaanxi Dideu Medichem Co. Ltd | +86-29-81139210 +86-18192627656 | 1059@dideu.com | China | 3589 | 58 |
| Hebei Yanxi Chemical Co., Ltd. | +8618531123677 | faithe@yan-xi.com | China | 5853 | 58 |
| Hebei Chuanghai Biotechnology Co,.LTD | +86-13131129325 | sales1@chuanghaibio.com | China | 5242 | 58 |
| Hebei Fengjia New Material Co., Ltd | +86-0311-87836622 +86-18712993135 | sales01@tairunfaz.com | China | 8051 | 58 |
| Hebei Chuanghai Biotechnology Co., Ltd | +8615531151365 | mina@chuanghaibio.com | China | 18126 | 58 |
| Anhui Ruihan Technology Co., Ltd | +8617756083858 | daisy@anhuiruihan.com | China | 973 | 58 |
| Henan Fengda Chemical Co., Ltd | +86-371-86557731 +86-13613820652 | info@fdachem.com | China | 20128 | 58 |
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View Lastest Price from 1,3-Propanediol manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-02-10 | 1,3-Propanediol
504-63-2
|
0.99 | RongNa Biotechnology Co.,Ltd | ||||
 |
2026-02-01 | 1,3-Propanediol
504-63-2
|
US $29.00 / mL | 99.00% | 10g | TargetMol Chemicals Inc. | ||
 |
2026-01-30 | 1 3 Propanediol
504-63-2
|
US $10.00 / kg | 1kg | 99.5% | 100 TON | Hebei Chuanghai Biotechnology Co., Ltd |
-
- 1,3-Propanediol
504-63-2
- 0.99
- RongNa Biotechnology Co.,Ltd
-
- 1,3-Propanediol
504-63-2
- US $29.00 / mL
- 99.00%
- TargetMol Chemicals Inc.
-
- 1 3 Propanediol
504-63-2
- US $10.00 / kg
- 99.5%
- Hebei Chuanghai Biotechnology Co., Ltd
