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trans,trans-2,4-Heptadienal

CAS No.4313-03-5
Chemical Name:trans,trans-2,4-Heptadienal
CBNumber:CB3252543
Molecular Formula:C7H10O
Formula Weight:110.15
MOL File:4313-03-5.mol

trans,trans-2,4-Heptadienal Property

Melting point 84.5 °C
Boiling point 84-84.5 °C(lit.)
Density 0.881 g/mL at 25 °C(lit.)
refractive index n20/D 1.534(lit.)
FEMA 3164 | (2E,4E)-HEPTADIENAL
Flash point 150 °F
storage temp. 2-8°C
solubility Acetonitrile (Slightly), Chloroform (Slightly), Ethyl Acetate (Slightly)
form clear liquid
color Light yellow to Brown
Odor at 1.00 % in dipropylene glycol. fatty green oily aldehydic vegetable cake cinnamon
Odor Type fatty
biological source synthetic
Water Solubility INSOLUBLE
JECFA Number 1179
BRN 1699244
Stability Light Sensitive
LogP 1.59
CAS DataBase Reference 4313-03-5(CAS DataBase Reference)
Substances Added to Food (formerly EAFUS) 2,4-HEPTADIENAL
EWG's Food Scores 1
FDA UNII VY79R3SU8X
NIST Chemistry Reference 2,4-Heptadienal, (E,E)-(4313-03-5)
EPA Substance Registry System 2,4-Heptadienal, (2E,4E)- (4313-03-5)
UNSPSC Code 12352100
NACRES NA.22

Safety

Hazard Codes :T,Xi
Risk Statements :22-24-38
Safety Statements :36/37-45
RIDADR :UN 2810 6.1/PG 3
WGK Germany :3
F :10-23
Hazard Note :Irritant
HazardClass :6.1
PackingGroup :III
HS Code :29121900

NFPA 704:

	2
2		0

Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal wordDanger
Hazard statements H302-H311-H315
Precautionary statements P280-P301+P312+P330-P302+P352+P312

trans,trans-2,4-Heptadienal Price More Price(5)

Brand: Sigma-Aldrich(India)
Product number: W316407
Product name : trans,trans-2,4-Heptandienal
Purity: ≥88%
Packaging: 1SAMPLE-K
Price: ₹4102.68
Updated: 2022/06/14
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Brand: Sigma-Aldrich(India)
Product number: W316407
Product name : trans,trans-2,4-Heptandienal
Purity: ≥88%
Packaging: 100G
Price: ₹21877.33
Updated: 2022/06/14
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Brand: Sigma-Aldrich(India)
Product number: W316407
Product name : trans,trans-2,4-Heptandienal
Purity: ≥88%
Packaging: 1KG
Price: ₹130311.35
Updated: 2022/06/14
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Brand: Sigma-Aldrich(India)
Product number: 180548
Product name : 2,4-Heptadienal
Purity: technical grade, 90%
Packaging: 1G
Price: ₹2619.65
Updated: 2022/06/14
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Brand: TCI Chemicals (India)
Product number: H0681
Product name : trans,trans-2,4-Heptadienal
Purity: min. 90.0 %
Packaging: 5ML
Price: ₹6200
Updated: 2022/05/26
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trans,trans-2,4-Heptadienal Chemical Properties,Usage,Production

Description 2,4-Heptadienal retards or prevents the development of "off-flavors" in auto-oxidizing fats and oils. May be prepared by reduction with LiAlH4 of the dienoic acid prepared by the Doebner synthesis, followed by oxidation with Mn02 of the resulting dienol to the corresponding dienol; by the method of Marshall and Whiting.
Chemical Properties clear yellow liquid
Chemical Properties 2,4-Heptadienal has a fatty, green odor In auto-oxidizing fats and oils, it retards or prevents the development of “off-favors ”.
Occurrence Reported found as a volatile component in boiled chicken, in peas by enzymatic formation from lipids, as the odorous component in Vaccinium macrocarpon; additional products in which 2,4-heptadienal has been reportedly identifed include soybean oil, black-tea aroma (trans- and cis-form); bilberry aroma (Vaccinium myrtillus); frozen peas, sunfower oil, autooxidized lard, salted salmon, sturgeon caviar and salmon roe; the trans,trans-form has been reported found among the volatile favor components of potato chips and tomato Also reported found in natural sources including cranberry, guava, melon, blackberry, avocado, cabbage, raw or cooked potato, tomato, butter, lean fsh, smoked fsh, chicken fat, cooked chicken, beef fat, tea, cooked beef, lamb and pork, peanut oil, peanut butter, mango, caulifower, broccoli, tamarind, fgs, corn tortillas, lemon balm, oysters, crayfsh, clams, mate and Virginia tobacco
Uses trans,trans-2,4-Heptanedienal is an unsaturated aldehyde that has a fishy odour. trans,trans-2,4-Heptanedienal is a volatile component naturally found in drinking water and fish oils.
Definition ChEBI: A heptadienal in which the two double bonds are located at positions 2 and 4 (the E,E-geoisomer).
Aroma threshold values Aroma characteristics at 0.10%: green fatty, herbal, vegetative, aldehydic oily with cucumber and fried nuances.
Taste threshold values Taste characteristics at 0.25 ppm: green fatty, harsh chicken fat, cucumber with brothy and fshy nuances.
General Description 2,4-Heptadienal is a specific marker of oxidative rancidity. It is also a potential algal metabolite.
Synthesis By reduction with LiAlH4 of the dienoic acid prepared by the Doebner synthesis, followed by oxidation with MnO2 of the resulting dienol to the corresponding dienol; by the method of Marshall and Whiting.