A0642012
Acetaldehyde , 99.5% , 75-07-0
Synonym(s):
Acetaldehyde;Ethanal;Ethanal, Acetic Aldehyde, Ethyl Aldehyde
CAS NO.：75-07-0
Empirical Formula: C2H4O
Molecular Weight: 44.05
MDL number: MFCD00006991
EINECS: 200-836-8
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | -125 °C (lit.) |
| Boiling point: | 21 °C (lit.) |
| Density | 0.785 g/mL at 25 °C (lit.) |
| vapor density | 1.03 (vs air) |
| vapor pressure | 52 mm Hg ( 37 °C) |
| FEMA | 2003 | ACETALDEHYDE |
| refractive index | n |
| Flash point: | 133 °F |
| storage temp. | 2-8°C |
| solubility | alcohols: soluble |
| pka | 13.57(at 25℃) |
| form | solution |
| color | White to off-white |
| Specific Gravity | 0.823 (20/4℃) (?90% Soln.) |
| Odor | Pungent, fruity odor detectable at 0.0068 to 1000 ppm (mean = 0.067 ppm) |
| PH | 5 (10g/l, H2O, 20℃) |
| explosive limit | 4-57%(V) |
| Odor Threshold | 0.0015ppm |
| Odor Type | ethereal |
| Water Solubility | > 500 g/L (20 ºC) |
| Sensitive | Air Sensitive |
| Merck | 14,39 |
| JECFA Number | 80 |
| BRN | 505984 |
| Henry's Law Constant | 7.69 at 25 °C (Snider and Dawson, 1985:Benkelberg et al., 1995) |
| Exposure limits | TLV-TWA 180 mg/m3 (100 ppm) (ACGIH),
360 mg/m3 (200 ppm) (NIOSH); STEL
270 mg/m3 (150 ppm); IDLH 10,000 ppm. |
| Dielectric constant | 21.8（5℃） |
| Stability: | Stable, but air sensitive. Substances to be avoided include strong oxidizing agents, strong acids, reducing agents, alkalies, halogens, halogen oxides. Highly flammable. Vapour/air mixtures explosive over a very wide concentration range. May form peroxides in storage. |
| InChIKey | IKHGUXGNUITLKF-UHFFFAOYSA-N |
| LogP | -0.16 |
Description and Uses
Acetaldehyde is used as a general solvent in organic and polymer chemical reactions. It also plays a role in fruit and food quality, ripening and deterioration.manufacture of paraldehyde, acetic acid, butanol, perfumes, flavors, aniline dyes, plastics, synthetic rubber; silvering mirrors, hardening gelatin fibers. Flavoring agent in foods and beverages. Fumigant for storage of apples and strawberries.
Safety
| Symbol(GHS) |    GHS02,GHS07,GHS08 |
| Signal word | Danger |
| Hazard statements | H225-H319-H335-H341-H350 |
| Precautionary statements | P202-P210-P233-P240-P305+P351+P338-P308+P313 |
| Hazard Codes | T,Xn,F+,F |
| Risk Statements | 23/24/25-34-40-43-36/37-12-67-11-41-22-10-19 |
| Safety Statements | 36/37-33-16-26 |
| RIDADR | UN 1198 3/PG 3 |
| WGK Germany | 2 |
| RTECS | LP8925000 |
| F | 10 |
| Autoignition Temperature | 185 °C |
| TSCA | Yes |
| HazardClass | 3 |
| PackingGroup | I |
| HS Code | 29121200 |
| Toxicity | LD50 orally in rats: 1930 mg/kg (Smyth) |
| IDLA | 2,000 ppm |
