HSDB 1507
1,2-Butanediol
CAS: 584-03-2;26171-83-5
Molecular Formula: C4H10O2
HSDB 1507 - Names and Identifiers
HSDB 1507 - Physico-chemical Properties
| Molecular Formula | C4H10O2 |
| Molar Mass | 90.12 |
| Density | 1.006 g/mL at 25 °C (lit.) |
| Melting Point | -50 °C |
| Boling Point | 191-192 °C/747 mmHg (lit.) |
| Specific Rotation(α) | -0.2～+0.2°(20℃/D)(neat) |
| Flash Point | 200°F |
| Water Solubility | 100-1000g/L at 25℃ |
| Vapor Presure | 10-2130Pa at 20℃ |
| Appearance | clear liquid |
| Color | Colorless to Light yellow |
| BRN | 969169 |
| pKa | 14.49±0.20(Predicted) |
| Storage Condition | Room Temprature |
| Refractive Index | n20/D 1.438(lit.) |
| MDL | MFCD00004570 |
HSDB 1507 - Risk and Safety
| Safety Description | 24/25 - Avoid contact with skin and eyes. |
| UN IDs | 1993 |
| WGK Germany | 2 |
| RTECS | EK0380000 |
| HS Code | 29053995 |
| Hazard Class | 3 |
| Packing Group | III |
HSDB 1507 - Reference Information
| LogP | -0.34-0.3 at 25℃ |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Application | 1, 2-butanediol is a kind of alcohol derivatives, mainly used in organic synthesis, preparation of 2-aminobutanol and the like. |
| separation of ethylene glycol and 1, 2-butanediol | separation method of ethylene glycol and 1, 2-butanediol, comprises the following steps: a) the crude ethylene glycol stream containing 1, 2-butanediol is sent to the product column for ordinary rectification, and the azeotrope stream containing 1, 2-butanediol and ethylene glycol is obtained at the top of the column, A stream containing ethylene glycol is obtained from the column; B) the azeotrope stream containing 1, 2-butanediol and ethylene glycol enters the azeotropic distillation column, and the stream containing the azeotropic agent is fed from the top of the azeotropic distillation column, A stream containing ethylene glycol and an azeotrope of the azeotrope is obtained at the top of the column and a stream of 1, 2-butanediol product is obtained at the top of the column. |
| category | flammable liquid |
| toxicity grade | poisoning |
| Acute toxicity | oral-mouse LD50: 3720 mg/kg; Intraperitoneal-mouse LD50: 4192 mg/kg |
| flammability hazard characteristics | flammable when exposed to heat or flame; Combustion-induced smoke |
| storage and transportation characteristics | warehouse ventilation and low temperature drying; Fire prevention. |
| fire extinguishing agent | foam |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 21:11:58
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