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| CAS No.: | 557-48-2 |
|---|---|
| Name: | FEMA 3377 |
| Molecular Structure: | |
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|
|
| Formula: | C9H14 O |
| Molecular Weight: | 138.21 |
| Synonyms: | 2,6-Nonadienal,(E,Z)- (8CI); 2,6-Nonadienal, trans,cis- (7CI); (2E,6Z)-Nona-2,6-dienal;(2E,6Z)-Nonadienal; (E,Z)-2,6-Nonadienal; (E,Z)-2,6-Nonadienal;2-trans-6-cis-Nonadienal; trans,cis-2,6-Nonadienal; trans-2,cis-6-Nonadienal |
| Density: | 0.86g/mLat 25°C(lit.) |
| Boiling Point: | 94-95°C18mm Hg(lit.) |
| Flash Point: | 181°F |
| Appearance: | clear colorless to pale yellow liquid |
| Risk Codes: | R36/37/38 |
| Safety: | Low toxicity by ingestion and skin contact. A moderate skin irritant. When heated to decomposition it emits acrid smoke and irritating fumes. |
| PSA: | 17.07000 |
| LogP: | 2.48790 |
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- 67674-37-7
nona-2(Z),6(Z)-dienal diethyl acetal
- 557-48-2
2E,6Z-nonadienal
| Conditions | Yield |
|---|---|
| Stage #1: nona-2(Z),6(Z)-dienal diethyl acetal In water at 3 - 8℃; for 0.166667h; Stage #2: With hydrogenchloride In water at 3 - 25℃; for 2h; | 93.2% |
| With sulfuric acid In acetone at 70℃; for 1h; | 25% |
| With sulfuric acid | |
| With hydrogenchloride In hexane; water at 20℃; for 0.5h; Solvent; | 52.56 g |
- 557-48-2
2E,6Z-nonadienal
| Conditions | Yield |
|---|---|
| With hydrogenchloride In water; acetone for 3h; | 80% |
- 5820-89-3, 7786-44-9, 28069-72-9
(2E,6Z)-2,6-nonadien-1-ol
- 557-48-2
2E,6Z-nonadienal
| Conditions | Yield |
|---|---|
| With manganese(IV) oxide In pentane | 67% |
| With sodium acetate; pyridinium chlorochromate In dichloromethane for 4h; | 52% |
| With chromium(III) oxide; sulfuric acid |
| Conditions | Yield |
|---|---|
| In 1,4-dioxane at 0 - 20℃; for 16h; Solvent; | 38% |
| In benzene Wittig reaction; Heating; |
- 186906-31-0
nona-2c,6c-dien-1-ol
- 557-48-2
2E,6Z-nonadienal
| Conditions | Yield |
|---|---|
| With chromium(VI) oxide; sulfuric acid |
- 26939-18-4
2,4,4,6-tetramethyl-5,6-dihydro-4H-1,3-oxazine
- 6728-31-0
(Z)-4-heptenal
- 557-48-2
2E,6Z-nonadienal
| Conditions | Yield |
|---|---|
| Multistep reaction; |
- 52077-22-2
methyl colnelenate
A
- 557-48-2
2E,6Z-nonadienal
B
- 1931-63-1
methyl ester of azelaic acid aldehyde
| Conditions | Yield |
|---|---|
| With hydrogenchloride In methanol for 18h; Ambient temperature; |
A
- 5820-89-3, 7786-44-9, 28069-72-9
(2E,6Z)-2,6-nonadien-1-ol
B
- 557-48-2
2E,6Z-nonadienal
| Conditions | Yield |
|---|---|
| With benzaldehyde In diethyl ether for 5h; Yield given. Yields of byproduct given; | |
| With benzaldehyde In diethyl ether for 5h; Product distribution; |
| Conditions | Yield |
|---|---|
| With water; hydrogen cation In acetone Yield given; |
| Conditions | Yield |
|---|---|
| With phosphate buffer at 25℃; pH=7.2; Kinetics; Decomposition; |
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Chemistry
IUPAC Name:(2E,6Z)-Nona-2,6-dienal (557-48-2)
Synonyms: Timtec-bb sbb006611 ; T2 c6 nonadienal ; Trans-2,cis-6-nonadienal ; Trans-2,cis-6-nonadien-1-al ; (2E,6Z)-2,6-Nonadienal ; (2E,6Z)-Nonadienal ; (eE-2,(Z)-6-Nonadienal ; (E,Z)-2,6-Nonadienal
CAS: 557-48-2
Molecular Formula: C9H14O
Molecular Weight: 138.2069
Molecular Struture: 
Surface Tension: 28.5 dyne/cm
Density: 0.855 g/cm3
Flash Point: 82.8 °C
Enthalpy of Vaporization: 43.95 kJ/mol
Boiling Point: 203.3 °C at 760 mmHg
Vapour Pressure: 0.28 mmHg at 25°C
Density: 0.86 g/mL at 25 °C(lit.)
Refractive index : n20/D 1.474(lit.)
FEMA :3377
Storage temp: Refrigerator
Chemical properties: Trans,cis-2,6-nonadienal (557-48-2) is clear colorless to pale yellow liquid,with a strong aroma of violet and cucumber like. Soluble in ethanol, and most of the non-volatile oil, insoluble in water.
Uses
GB 2760 - 1996 require that Trans,cis-2,6-nonadienal (557-48-2) can be used for the temporary to allow the use of food spices, mainly for the preparation of melon flavor.
Production
derived from 2,6 - Wang diene -1 - alcohol by oxidation of chromium oxide
Toxicity Data With Reference
| 1. | skn-rbt 500 mg/24H MOD | FCTOD7 Food and Chemical Toxicology. 20 (1982),769. | ||
| 2. | orl-rat LD50:>5 g/kg | FCTOD7 Food and Chemical Toxicology. 20 (1982),769. | ||
| 3. | skn-rbt LD50:>5 g/kg | FCTOD7 Food and Chemical Toxicology. 20 (1982),769. |
Consensus Reports
Reported in EPA TSCA Inventory.
Safety Profile
Risk Statements : 36/37/38
36/37/38: Trans,cis-2,6-nonadienal (557-48-2) is irritating to eyes, respiratory system and skin
Safety Statements: 24/25
24/25: Avoid contact with skin and eyes
WGK Germany : 2
RTECS : RA5391800
Specification
1.General Information: As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Will burn if involved in a fire.
2.Extinguishing Media: Use water spray, dry chemical, carbon dioxide, or chemical foam.
3.Handling: Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes.
4.Storage: Keep away from sources of ignition. Store in a cool, dry place. Store in a tightly closed container. Keep under a nitrogen blanket. Keep refrigerated. (Store below 4°C/39°F.)