Butyraldehyde , standardforGC,>99.5%(GC) , 123-72-8
Synonym(s):
Butanal;Butyraldehyde
CAS NO.：123-72-8
Empirical Formula: C4H8O
Molecular Weight: 72.11
MDL number: MFCD00007023
EINECS: 204-646-6
PRODUCT Properties
| Melting point: | -96 °C |
| Boiling point: | 75 °C(lit.) |
| Density | 0.817 |
| vapor density | 2.5 (vs air) |
| vapor pressure | 90 mm Hg ( 20 °C) |
| refractive index | n |
| FEMA | 2219 | BUTYRALDEHYDE |
| Flash point: | 12 °F |
| storage temp. | 2-8°C |
| solubility | water: soluble50g/L at 20°C |
| form | Liquid |
| color | Clear colorless |
| PH | 6-7 (71g/l, H2O, 20℃) |
| PH Range | 6-7 |
| Odor | Pungent aldehyde; pungent and intense. |
| Odor Threshold | 0.00067ppm |
| explosive limit | 1.7-11.1%(V) |
| Odor Type | chocolate |
| Water Solubility | 7.1 g/100 mL (25 ºC) |
| Sensitive | Air Sensitive |
| Merck | 14,1591 |
| JECFA Number | 86 |
| BRN | 506061 |
| Exposure limits | No exposure limit is set for n-butyraldehyde. |
| Dielectric constant | 13.4（26℃） |
| Stability: | Stable. Incompatible with oxidizing agents, strong bases, strong reducing agents, strong acids. Highly flammable. |
| LogP | 1.3 at 20℃ and pH4.4-4.7 |
| Surface tension | 70mN/m at 1g/L and 20℃ |
Description and Uses
Butyraldehyde (butanal, IUPAC) is a water-white liquid with a pungent aldehyde odor. Butyraldehyde is a dangerous fire risk, with a flammable range of 2.5%–12.5% in air. Boiling point is 168°F (75°C), flash point is 10°F (?12°C), and ignition temperature is 446°F (230°C). It is slightly soluble in water, with a specific gravity of 0.8, which is lighter than water. Vapor density is 0.804, which is lighter than air. In addition to flammability, butyraldehyde is corrosive and causes severe eye and skin burns. It may be harmful if inhaled. The four-digit UN identification number is 1129. The NFPA 704 designation is health 3, flammability 3, and reactivity 2. The primary uses of butyraldehyde are in plastics and rubber and as a solvent.
n-Butyraldehyde is used to make rubberaccelerators, synthetic resins, and plasticizers;and as a solvent.
Safety
| Symbol(GHS) |   GHS02,GHS07 |
| Signal word | Danger |
| Hazard statements | H225-H319 |
| Precautionary statements | P210-P233-P280-P303+P361+P353-P337+P313-P370+P378 |
| Hazard Codes | F |
| Risk Statements | 11-R11 |
| Safety Statements | 9-29-33-S9-S33-S29-16 |
| RIDADR | UN 1129 3/PG 2 |
| WGK Germany | 1 |
| RTECS | ES2275000 |
| F | 13-23 |
| Autoignition Temperature | 390 °F |
| TSCA | Yes |
| HS Code | 2912 19 00 |
| HazardClass | 3 |
| PackingGroup | II |
| Toxicity | Single-dose LD50 orally in rats: 5.89 g/kg (Smyth) |
