Products Description of 1,3-Butanediol (CAS#107-88-0)
1,3-Butanediol is a transparent, colorless, hygroscopic viscous liquid with a mild, characteristic taste and is nearly odorless. It has a boiling point of 207.5°C, a relative density of 1.0059 (at 4°C), a refractive index (nD20) of 1.4401, a freezing point below -50°C, and a flash point of 121.1°C. The compound exhibits mild antibacterial properties and is miscible with water and acetone, and soluble in ether.
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1,3-Butanediol Chemical Properties
| Melting point | -54 °C |
| Boiling point | 203-204 °C(lit.) |
| density | 1.005 g/mL at 25 °C(lit.) |
| vapor density | 3.1 (20 °C, vs air) |
| vapor pressure | 0.06 mm Hg ( 20 °C) |
| refractive index | n20/D 1.44(lit.) |
| Fp | 250 °F |
| storage temp. | Store below +30°C. |
| solubility | >500g/lMiscible |
| form | Liquid |
| pka | 14.83±0.20(Predicted) |
| color | Clear colorless to yellow, may discolor to brown on storage |
| Specific Gravity | 1.004 – 1.007 |
| Odor | odorless |
| PH Range | 6 - 7 at 20 °C |
| PH | 6.1 (500g/l, H2O, 20℃) |
| explosive limit | 1.9-12.6%(V) |
| Water Solubility | SOLUBLE |
| Sensitive | Hygroscopic |
| Merck | 141567 |
| BRN | 1731276 |
| Stability: | Stable. Flammable. Hygroscopic - protect from air and moisture. Incompatible with strong oxidizing agents. |
| LogP | -0.9 at 25℃ |
| CAS DataBase Reference | 107-88-0(CAS DataBase Reference) |
| NIST Chemistry Reference | 1,3-Butanediol(107-88-0) |
| EPA Substance Registry System | 1,3-Butylene glycol (107-88-0) |
Safety Information
| Safety Statements | 24/25 |
| WGK Germany | 1 |
| RTECS | EK0440000 |
| F | 3 |
| Autoignition Temperature | 741 °F |
| TSCA | Yes |
| HS Code | 29053920 |
| Hazardous Substances Data | 107-88-0(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: 18610 mg/kg LD50 dermal Rabbit > 20000 mg/kg |
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Product Application of 1,3-Butanediol (CAS#107-88-0)
1,3-Butanediol is characterized by diol reactivity, odorlessness, low toxicity, and good water solubility. Its main applications include:
Raw Material for Polyester and Alkyd Resins – Used in the production of unsaturated polyesters, either alone or mixed with ethylene glycol, providing excellent water resistance, flexibility, and impact strength.
Raw Material for Plasticizers – When combined with dibasic acids (e.g., adipic acid) to form polyester plasticizers, it offers low volatility, migration resistance, and excellent resistance to soap water, solvents, and oils.
Raw Material for Polyurethane Coatings – As a building block for saturated polyester in polyurethane coatings, it improves water resistance in unpainted surfaces, outperforming other diols.
Wetting Agent, Softener, and Solvent – Exhibits strong moisture retention and low toxicity. Its esters can be used as wetting and softening agents in cigarettes, celluloid, vinylon films, paper, and fibers. Additionally, it serves as a solvent in fine chemical formulations such as lotions, ointments, creams, and toothpastes, and acts as an intermediate in pharmaceuticals and dyes.
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