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HomeProduct name listFEMA 2561

FEMA 2561

Synonym(s):(Z)-3-hexenal solution

  • CAS NO.:6789-80-6
  • Empirical Formula: C6H10O
  • Molecular Weight: 98.14
  • MDL number: MFCD00065446
  • EINECS: 229-854-4
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-06-26 11:11:11
FEMA 2561 Structural

What is FEMA 2561?

Description

This substance may be prepared by the oxidation of cis-3-hexenol, or by other standard reactions.

Description

cis-3-Hexenal is an unsaturated aliphatic aldehyde. Its discovery dates to 1962, when several articles appeared that described its natural occurrence and synthesis. That year, researchers identified cis-3-hexenal in the essential oils of Hypericum plants from Uzbekistan and the volatile constituents of raspberries and strawberries. And Swiss chemists M. Winter and F. Gautschi reported its synthesis and that of its trans isomer.
Since that time, cis-3-hexenal has also been found in Houttuynia cordata, a flowering plant native to southeast Asia; Perilla frutescens var. crispa, an herb that grows in the mountains of China, India, and elsewhere; and in the volatile components of tomatoes.
Despite its widespread occurrence, there is one specific circumstance in which you are most likely to have come across cis-3-hexenal: in the aroma of freshly cut grass. In the fourth edition of Plant Biochemistry (2011), German biochemists Hans-Walter Heldt at the University of G?ttingen and Birgit Piechulla at the University of Rostock wrote
The characteristic smell of freshly cut grass is caused primarily by the release of hexenals and hexenols, indicating that the activity of lipoxygenase and hydroperoxide lyase is greatly increased by tissue wounding. This is part of a defense reaction, e.g., when leaves are damaged by feeding larvae, enemies of the herbivores are attracted by the emission of the volatiles.
Because of its intense aroma, cis-3-hexenal is an ingredient in commercial products such as insect repellents, flavoring agents, fragrances, and odor-masking agents. It is a close relative of cis-3-hexen-1-ol, the Molecule of the Week for October 20, 2017.

Chemical properties

cis-3-Hexenal has a powerful, deep-green, leafy odor

Occurrence

Reported found in apple, cucumber, grape, banana, raspberry, fresh strawberries, black tea, tomato, guava, melon, strawberry, bell pepper, ginger, butter, beer, tea, passion fruit, potato chips, plum, rose apple, Malay apple, starfruit, lovage, kiwifruit, endive, nectarine, Chinese quince and red currants.

The Uses of FEMA 2561

cis-3-Hexenal is an unsaturated aldehyde that has a green, leafy odour and flavour. It is a volatile flavour component of olive oil, tomatoes, cis-3-Hexenal is also a precursor of cis-2-Hexenol (H295005).

Definition

ChEBI: The cis-isomer of 3-hexenal.

Preparation

By oxidation of cis-3-hexenol or by other standard reactions.

Aroma threshold values

Detection: 0.25 ppb

Properties of FEMA 2561

Melting point: -78°C (estimate)
Boiling point: 20 °C0.2 mm Hg
Density  0.982 g/mL at 25 °C
refractive index  n20/D 1.44
FEMA  2561 | CIS-3-HEXENAL
Flash point: 140 °F
storage temp.  -20°C
solubility  Chloroform, Methanol
form  Oil
appearance colorless liquid
color  Clear Colourless to Light Yellow
Odor at 1.00 % in dipropylene glycol. green fatty grassy weedy fruity apple
JECFA Number 316
Stability: Light Sensitive
EPA Substance Registry System 3-Hexenal, (3Z)- (6789-80-6)

Safety information for FEMA 2561

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H319:Serious eye damage/eye irritation
Precautionary Statement Codes P264:Wash hands thoroughly after handling.
P264:Wash skin thouroughly after handling.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P337+P313:IF eye irritation persists: Get medical advice/attention.

Computed Descriptors for FEMA 2561

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