2,3-Butanediol
butane-2,3-diol
CAS: 513-85-9;123513-85-9
Molecular Formula: C4H10O2
2,3-Butanediol - Names and Identifiers
| Name | butane-2,3-diol |
| Synonyms | 2,3-Butandiol 2,3-butanodiol 2,3-Butanediol butane-2,3-diol 2,3-Dihydroxybutane 2,3-butylene glycol OMEGA-BUTYLENE GLYCOL 2,3-BUTANEDIOL WITH GC (2R,3S)-butane-2,3-diol Dimethylethylene glycol 2,3-Butanediol, mixture of DL and meso |
| CAS | 513-85-9 123513-85-9 |
| EINECS | 208-173-6 |
| InChI | InChI=1/C4H10O2/c1-3(5)4(2)6/h3-6H,1-2H3 |
| InChIKey | OWBTYPJTUOEWEK-UHFFFAOYSA-N |
2,3-Butanediol - Physico-chemical Properties
| Molecular Formula | C4H10O2 |
| Molar Mass | 90.12 |
| Density | 1.002 g/mL at 20 °C (lit.) |
| Melting Point | 25 °C (lit.) |
| Boling Point | 183-184 °C (lit.) |
| Flash Point | 185°F |
| Water Solubility | SOLUBLE |
| Solubility | Chloroform, Methanol |
| Vapor Presure | <1 hPa (20 °C) |
| Appearance | Crystalline powder or liquid |
| Color | Colorless to pale yellow |
| Merck | 14,1568 |
| BRN | 969165 |
| pKa | 14.67±0.20(Predicted) |
| PH | 7 (H2O, 20℃)Aqueous solution |
| Storage Condition | Store below +30°C. |
| Stability | Stable. Combustible. Incompatible with strong oxidizing agents, acid anhydrides, acid chlorides, chloroformates, reducing agents. |
| Sensitive | Hygroscopic |
| Explosive Limit | 3.1-11.4%(V) |
| Refractive Index | n20/D 1.433(lit.) |
| MDL | MFCD00004523 |
| Physical and Chemical Properties |
Nearly colourless crystalline solid or liquid. Hygroscopic. Combustible. Soluble in water and alcohols / ether. |
2,3-Butanediol - Risk and Safety
| Safety Description | 24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 1 |
| RTECS | EK0532000 |
| TSCA | Yes |
| HS Code | 29053980 |
| Toxicity | LD50 orally in Rabbit: > 5000 mg/kg |
2,3-Butanediol - Reference
| Reference Show more | 1. Xie, S., Zhang, Y., Zhou, Y., Wang, Z., Yi, C. and Qiu, X. (2017), Salting-out of bio-based 2,3-butanediol from aqueous solutions. J. Chem. Technol. Biotechnol., 92: 122-132. https://doi.org/10.1002/jctb.4999 |
2,3-Butanediol - Reference Information
| LogP | -0.92 at 25℃ |
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| Introduction | 2, 3-butanediol is an alcohol organic compound, which is in the form of three stereoisomers, chiral pairs and meso isomers. It is often used as a reagent, which is a colorless liquid. Slightly soluble in water, ethanol, ether and acetone, it is the precursor for preparing various plastics and pesticides. Note: The reagent should be avoided from inhalation; avoid contact with eyes, skin and clothing. It is hygroscopic and sensitive to air. Store under nitrogen protection in a dry and cool place. |
| apply | 2, 3-butanediol can be used for enantiomeric resolution, asymmetric butanol aldehyde reaction, asymmetric fragmentation of chiral acetals, asymmetric β-elimination of chiral acetylacetals, asymmetric allylation, chiral diene acetals Cyclization, enantioselective epoxidation, diastereoselective cyclopropanation, homologization of borates. |
| use | 2, 3-butanediol uses sulfuric acid as a catalyst and reacts with acetic acid at 140-150 ℃ for 2 hours to generate 2, 3-butanediol diacetate, which can be added to cream or as a hygroscopic agent, plasticizer and coupling agent. 2, 3-butanediol is also used as a solvent and as a raw material for synthetic resins. Used to prepare resins and use as solvents, etc. |
| production method | sugar, molasses, malt pulp or alcohol mother liquor are used as raw materials and are prepared by biological fermentation. When sugars are fermented and refined to make vinegar, the by-product acetaldehyde can also produce 2, 3-butanediol under the action of yeast. |
| category | flammable liquid |
| toxicity classification | low toxicity |
| acute toxicity | oral-rat LD50: 5462 mg/kg |
| flammability hazard characteristics | combustible in case of open flame, high temperature and strong oxidant; Combustion emission stimulates smoke |
| storage and transportation characteristics | warehouse ventilation and low temperature drying |
| fire extinguishing agent | foam, dry powder, carbon dioxide, mist water, sand |
| spontaneous combustion temperature | 395°C DIN 51794 |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 20:49:11
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