NSC 6757
2-Ethylbutanal
CAS: 97-96-1
Molecular Formula: C6H12O
NSC 6757 - Names and Identifiers
NSC 6757 - Physico-chemical Properties
| Molecular Formula | C6H12O |
| Molar Mass | 100.16 |
| Density | 0.814g/mLat 25°C(lit.) |
| Melting Point | -89°C |
| Boling Point | 117°C(lit.) |
| Flash Point | 70°F |
| JECFA Number | 256 |
| Water Solubility | Soluble in ether and alcohols. Slightly soluble in water. |
| Vapor Presure | 16.9mmHg at 25°C |
| Appearance | clear liquid |
| Color | Colorless to Light yellow |
| BRN | 1209330 |
| Storage Condition | Flammables area |
| Stability | Stability Stable, but air sensitive. Flammable. Readily forms explosive mixtures with air. Incompatible with strong bases, strong reducing agents, oxidizing agents. |
| Sensitive | Air Sensitive |
| Refractive Index | n20/D 1.402(lit.) |
| Physical and Chemical Properties | Colorless and easy-flowing liquid, with cocoa and chocolate aroma, and irritating smell. Boiling point 117 ℃, freezing point -89 ℃, flash point 21 ℃. The vapor pressure is 1306Pa(20 ℃). Miscible in ethanol and ether, lml dissolved in about 50ml of water. |
NSC 6757 - Risk and Safety
| Risk Codes | R11 - Highly Flammable R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S16 - Keep away from sources of ignition. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
| UN IDs | UN 1178 3/PG 2 |
| WGK Germany | 1 |
| RTECS | ES2625000 |
| TSCA | Yes |
| HS Code | 29121900 |
| Hazard Class | 3 |
| Packing Group | II |
NSC 6757 - Reference Information
| FEMA | 2426 | 2-ETHYLBUTYRALDEHYDE |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| content analysis | take 0.5mol/L hydroxylamine hydrochloride solution 65ml and 0.5mol/L triethanolamine solution 50.0ml, into a suitable heat resistant pressure bottle, the bottle should be tightly fixed. The nitrogen gas was carefully introduced through a glass tube for 2min, and the air was driven out. The end of the glass tube should be placed close to the liquid surface. 1g of a sample was accurately measured with a weighing pipette and put into the mixed solution in the above-mentioned pressure bottle. Cover it, pack it tightly with a canvas bag, place it in a hot water bath at 98±2 ℃ for 60min, and shake it occasionally. Cool, remove the lid, but should prevent the loss of content. Titrated with 0.5mol/L sulfuric acid to a bluish Blue end point. Blank titration was performed at the same time. Each Ml of 0.5mol/L sulfuric acid corresponds to 50.08mg of 2-ethylbutyraldehyde (C6H12O). Or according to GT-10-4 using non-polar column method. |
| toxicity | GRAS(FEMA). LD50 3980mg/kg (rat, oral). |
| usage limit | FEMA(mg/kg): Soft drink 10; Cold drink 40; Candy 0.12~25; baking food 0.20~20. Moderate limits (FDA § 172.515,2000). |
| Use | flavor. Mainly used in the preparation of cocoa and chocolate flavor. |
| production method | consists of the condensation of diethyl methanol and anhydrous oxalic acid or sulfuric acid. The new method is derived from the reaction of a-Z, alkenyl butenal with iron chips and acetic acid. |
| category | flammable liquid |
| toxicity grade | poisoning |
| Acute toxicity | oral-rat LD50: 3980 mg/kg; Inhalation-rat LCL0: 8000 PPM/4 hours |
| stimulation data | Skin-rabbit 500 mg mild |
| explosive hazard characteristics | mixture with air to form explosive mixture |
| flammability hazard characteristics | flammability |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; It is stored separately from the oxidant |
| extinguishing agent | dry powder, carbon dioxide; 1211; Foam |
Last Update：2024-04-09 02:00:12
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