5910-85-0

Basic information

• Product Name: 2,4-Heptadienal
• Synonyms: (E)-2,(Z)-4-heptadienal;(E, Z)-2,4-heptadienal;(E,Z)-Hepta-2,4-dienal;2,4-Heptadienal, (E,Z)-;2,4-Heptadienal, (Z,Z)-;hepta-2,4-dienal;T2 T4 HEPTADIENAL;TRANS,TRANS-2,4-HEPTADIEN-1-AL
• CAS NO: 5910-85-0
• Molecular Formula: C₇H₁₀O
• Molecular Weight: 110.15
• EINECS: 224-328-0
• Mol File: 5910-85-0.mol

Chemical Properties

• Boiling Point: 84-84.5 °C(lit.)
• Flash Point: 150 °F
• Appearance: /
• Density: 0.881 g/mL at 25 °C(lit.)
• Vapor Pressure: 2.7E-10mmHg at 25°C
• Refractive Index: n20/D 1.534(lit.)
• CAS DataBase Reference: 2,4-Heptadienal(CAS DataBase Reference)
• NIST Chemistry Reference: 2,4-Heptadienal(5910-85-0)
• EPA Substance Registry System: 2,4-Heptadienal(5910-85-0)

Safety Data

• Hazard Codes: T
• Statements: 22-24-38
• Safety Statements: 36/37-45
• RIDADR: UN 2810 6.1/PG 3
• WGK Germany: 3
• F: 10-23
• Hazardous Substances Data: 5910-85-0(Hazardous Substances Data)

Usage

Uses

Used in Flavor and Fragrance Industry:
TRANS,TRANS-2,4-HEPTADIENAL is used as a flavor and fragrance ingredient for its pleasant aroma, adding a fruity and floral note to various products such as perfumes, soaps, and cosmetic formulations.
Used in Food Industry:
TRANS,TRANS-2,4-HEPTADIENAL is used as a flavoring agent in the food industry to impart a fruity and floral taste to food products, enhancing their overall flavor profile.
Used in Cosmetic Industry:
TRANS,TRANS-2,4-HEPTADIENAL is used as a fragrance ingredient in cosmetic formulations, providing a pleasant scent and enhancing the sensory experience of the products.
Used in Organic Chemistry:
TRANS,TRANS-2,4-HEPTADIENAL is used as a building block in organic chemistry, contributing to the synthesis of other compounds and facilitating various chemical reactions.
Used in Synthesis of Other Compounds:
TRANS,TRANS-2,4-HEPTADIENAL is utilized in the synthesis of other compounds, serving as a key intermediate in the production of various chemical products.

InChI:InChI=1/C19H21N3O3/c1-3-25-19(24)21-15-11-10-14-9-8-13-6-4-5-7-16(13)22(17(14)12-15)18(23)20-2/h4-7,10-12H,3,8-9H2,1-2H3,(H,20,23)(H,21,24)

Upstream product

• 89171-62-0 7-methoxy-hept-6-en-4-yn-3-ol 
• 33498-40-7 1,1-diethoxy-pent-2-ene 
• 109-92-2 ethyl vinyl ether 
• 102651-80-9 2,4-Heptadienal-dimethylhydrazon 
• 1191-04-4 2-hexenoic acid 
• 505-57-7 2-hexenal 
• 4219-24-3 hex-3-enoic acid 
• 102651-78-5 hex-2-enal-N,N-dimethyl hydrazone 

Downstream Products

• 17175-86-9 2,4-heptadienoic acid 
• 56269-22-8 2,4,6-nonatrienal 
• 72102-75-1 1,1-diethoxy-hepta-2,4-diene 
• 1279108-69-8 C₂₈H₂₉NO₅ 
• 1576-86-9 2-pentenal 
• 75-07-0 acetaldehyde 
• 123-38-6 propionaldehyde 
• 2463-63-0 3-Butyl-acrolein 
• 4748-80-5 4-ethyl-3-nitro-benzaldehyde 

Relevant articles and documents

Method for preparing 2,4-heptadienal

The invention discloses a method for preparing 2,4-heptadienal. Heptadienal is prepared by taking propyl aldehyde as a starting material through the following three reaction steps: (1), synthesizing acrolein diethyl acetal through absolute ethyl alcohol and anhydrous calcium chloride; (2), synthesizing 1,1,3,5-tetraethoxyheptane through acrolein diethyl acetal, BF3 diethyl ether and vinyl ether; and (3), synthesizing trans-2-trans-4-heptadienal through 1,1,3,5-tetraethoxyheptane and hydrochloric acid. The method disclosed by the invention has the beneficial effects that raw materials are easily obtained, and cheap; a condition is easily controlled and operated; and, the product is relatively low in cost and better in quality, and is suitable for large-scale production.

Preparation of Methine Homologues of Aldehydes and Carboxylic Acids

Dilithium salts of carboxylic acids add to glyoxal mono(dimethylhydrazone) (5) to give salts of β-hydroxy carboxylic acids.Reaction with tosyl chloride affords via decarboxylation the corresponding unsaturated aldehyde hydrazones 10 or 15, which are easily hydrolyzed and oxidized to form unsaturated carboxylic acids.By this method aldehydes and/or carboxylic acids may be extended by one methine group.Extension by three methine groups can be achieved with vinylogous monohydrazones such as 23.