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Hexenyl Acetate, Leaf Acetate, Green Leaf Acetate, 3681-71-8

Hexenyl Acetate, Leaf Acetate, Green Leaf Acetate, 3681-71-8

CIS-3-HEXENYL ACETATE – CİS-3-HEKSENİL ASETAT

CAS Number: 3681-71-8
EC Number (EINECS): 222-960-1
Molecular Formula: C₈H₁₄O₂
Molecular Weight: 142.20 g/mol
FEMA Number: 3171
Chemical Class: Ester (unsaturated fatty acid ester)

SECTION 1: CHEMICAL IDENTITY AND DEFINITION

Parameter Information
Chemical Name (IUPAC) (Z)-Hex-3-en-1-yl acetate
Other Names cis-3-Hexenyl acetate, (Z)-3-Hexenyl acetate, 3-Hexen-1-ol acetate, Leaf Acetate, Green Leaf Acetate
Chemical Formula C₈H₁₄O₂
Molecular Weight 142.20 g/mol
CAS Number 3681-71-8
EC Number (EINECS) 222-960-1
FEMA Number 3171
Chemical Class Ester (unsaturated fatty acid ester)
Appearance Colorless to pale yellow, clear liquid
Odor Fresh, green, leafy, fruity, banana-like, apple-like
Taste Green, fruity, fresh
Physical State (20°C) Liquid
Source Tea plant (Camellia sinensis), perilla, various fruits
E Number Not assigned

SECTION 2: PHYSICAL PROPERTIES

Property Value
Appearance Colorless to pale yellow, clear liquid
Odor Fresh, green, leafy, fruity, banana-like
Taste Green, fruity, fresh
Molecular Weight 142.20 g/mol
Boiling Point 75 – 76 °C (at 23 mmHg)
Boiling Point (760 mmHg) ~183 °C
Density (25°C) 0.897 g/cm³
Refractive Index (nD²⁰) 1.427 – 1.429
Flash Point ~58 °C (closed cup)
Solubility in Water Slightly soluble (~0.5 g/L)
Solubility in Ethanol Miscible
Solubility in Oils Miscible
Solubility in Organic Solvents Miscible (ether, chloroform, hexane)
Log P (octanol/water) 2.56
Vapor Pressure (25°C) ~0.5 mmHg
Purity ≥ 98.0%

SECTION 3: CHEMICAL PROPERTIES

Property Information
Chemical Formula C₈H₁₄O₂
Molecular Weight 142.20 g/mol
Chemical Class Ester (unsaturated fatty acid ester)
Functional Groups Ester (-COO-)
Structure Acetic acid ester of cis-3-hexen-1-ol
SMILES CC(=O)OCC/C=C\CC
InChI Key VXRUPLVVDQKRCG-ARJAWSKDSA-N
Isomerism cis (Z) and trans (E) isomers exist
Stability Stable under normal storage conditions
Hydrolysis Hydrolyzes in presence of strong acids or bases
Oxidation Slowly oxidizes in air
Incompatible Materials Strong oxidizing agents, strong acids, strong bases

Chemical Structure:

    O
    ||
CH₃-C-O-CH₂-CH₂-CH=CH-CH₂-CH₃
         (cis configuration)

(Z)-Hex-3-en-1-yl acetate
(cis-3-Hexenyl acetate)

SECTION 4: ISOMERS

Isomer CAS Number Odor Profile Occurrence
cis-3-Hexenyl acetate (Z) 3681-71-8 Fresh, green, leafy, fruity Natural (tea, perilla)
trans-3-Hexenyl acetate (E) 3681-82-7 Less green, more fruity Synthetic
cis-2-Hexenyl acetate (Z) 2497-18-9 Green, fruity Natural
Hexyl acetate 142-92-7 Fruity, sweet Natural, synthetic

SECTION 5: NATURAL SOURCES

Source Content Description
Tea Plant (Camellia sinensis) Significant Key component of green tea aroma
Perilla (Perilla frutescens) High Major volatile compound
Green Apple Moderate Fresh green note
Banana Moderate Fruity, fresh note
Strawberry Low Fresh, green note
Tomato Low Green, fresh note
Lime Low Fresh, green note
Kiwi Low Green, fresh note

SECTION 6: SENSORY PROPERTIES

Parameter Description
Primary Odor Fresh, green, leafy
Secondary Odor Fruity, banana-like, apple-like
Odor Intensity Strong
Taste Profile Green, fresh, fruity
Flavor Characteristics Green apple, fresh grass, leafy
Threshold (in water) ~0.1-1.0 ppm

Olfactory Description:

cis-3-Hexenyl acetate is characterized by a fresh, green, leafy odor with a fruity, banana-like undertone. It provides the characteristic "green note" in many natural flavors and fragrances.

SECTION 7: APPLICATION AREAS

7.1. Flavor and Fragrance Industry

Application Function
Perfumes Fresh, green, leafy note
Cosmetic Products Fragrance component
Soaps Fragrance component
Fine Fragrances Green, fruity note
Air Fresheners Fresh, green scent

7.2. Food Industry

Application Function
Flavoring Agent Natural flavor component (FEMA 3171)
Fruit Flavors Green apple, banana, strawberry
Beverages Fresh, green note
Confectionery Fruity flavor enhancement
Dairy Products Fresh, fruity note
Tea Flavors Authentic green tea aroma
Ice Cream Fruity flavor enhancement

7.3. Beverage Industry

Application Function
Green Tea Beverages Authentic tea aroma
Fruit Juices Fresh, natural note
Soft Drinks Fruity flavor enhancement

SECTION 8: GREEN NOTE FLAVOR COMPOSITION

Component Role Typical Ratio
cis-3-Hexenyl acetate Primary green note 30-60%
cis-3-Hexenol Fresh green note 10-30%
Hexyl acetate Fruity green note 5-20%
cis-3-Hexenyl butyrate Sweet green note 5-15%
Hexanal Sharp green note 1-5%

SECTION 9: QUALITY SPECIFICATIONS

Parameter Specification (FCC / JECFA)
Appearance Colorless to pale yellow, clear liquid
Identification Positive (GC, IR)
Assay (GC) ≥ 98.0%
Refractive Index (nD²⁰) 1.427 – 1.429
Specific Gravity (25°C) 0.894 – 0.900
Acid Value ≤ 1.0
Heavy Metals (as Pb) ≤ 10 ppm
Lead (Pb) ≤ 2 ppm
Arsenic (As) ≤ 3 ppm
Mercury (Hg) ≤ 1 ppm

SECTION 10: STORAGE AND SHELF LIFE

Parameter Information
Storage Conditions Cool (15-25°C), dry, well-ventilated area
Container Requirements Tightly closed, light-resistant containers
Protect From Light, air (oxidation), heat, strong oxidizing agents, strong acids, strong bases
Shelf Life 24-48 months (unopened original packaging)
Stability Note Slowly oxidizes in air; color may darken

SECTION 11: PACKAGING OPTIONS

Packaging Type Quantity Material
Glass bottle 1-5 L Amber glass
Plastic drum 200-250 kg HDPE
Plastic pail 20-25 kg HDPE
Aluminum foil bag 1-5 kg Laminated aluminum

SECTION 12: SAFETY AND HEALTH INFORMATION

GHS Classification

Hazard Class Category
Flammable Liquid Category 3 (H226)
Skin Irritation Category 2 (H315)
Eye Irritation Category 2A (H319)
Signal Word Warning

Hazard Statements (H-Codes)

Code Statement
H226 Flammable liquid and vapor
H315 Causes skin irritation
H319 Causes serious eye irritation

Precautionary Statements (P-Codes)

Code Statement
P210 Keep away from heat/sparks/open flames
P261 Avoid breathing vapors
P280 Wear protective gloves/eye protection
P302+P352 IF ON SKIN: Wash with plenty of soap and water
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes; remove contact lenses if present and easy to do; continue rinsing

SECTION 13: TOXICOLOGICAL INFORMATION

Parameter Value
Oral LD50 (Rat) > 5,000 mg/kg
Dermal LD50 (Rabbit) > 2,000 mg/kg
Skin Irritation Mild irritant
Eye Irritation Mild irritant
Skin Sensitization Non-sensitizer
Carcinogenicity Not classified
Mutagenicity Negative in standard tests
Target Organs Skin, eyes

SECTION 14: FIRST AID MEASURES

Exposure Route Action
Inhalation Move to fresh air. If respiratory irritation persists, seek medical attention.
Skin Contact Wash with plenty of soap and water. Remove contaminated clothing.
Eye Contact Rinse immediately with plenty of water for at least 15 minutes. Seek medical attention.
Ingestion Rinse mouth. Do not induce vomiting. Seek medical attention.

SECTION 15: REGULATORY STATUS

Region / Authority Status
European Union Approved as food flavoring
USA (FDA) GRAS (21 CFR 172.515)
Turkey Approved (food and cosmetic)
JECFA Approved
FEMA GRAS (FEMA 3171)
IFRA Approved for use in fragrances

SECTION 16: TRANSPORT INFORMATION

Parameter Information
UN Number Not regulated (not dangerous goods)
Hazard Class Not applicable
Packing Group Not applicable
ADR/RID Not regulated
IMDG Code Not regulated
IATA (Air) Not regulated
Marine Pollutant No

SECTION 17: FIRE-FIGHTING MEASURES

Parameter Information
Fire Hazard Flammable liquid
Flash Point ~58 °C
Suitable Extinguishing Media CO₂, dry chemical powder, alcohol-resistant foam, water spray
Specific Hazards When heated, emits CO, CO₂
Decomposition Products CO, CO₂
Protective Equipment Self-contained breathing apparatus (SCBA), full protective clothing

SECTION 18: ACCIDENTAL SPILLAGE AND CLEANUP

Parameter Information
Personal Protection Nitrile gloves, protective goggles, chemical-resistant clothing
Cleaning Methods Absorb with inert material (sand, vermiculite); dispose in sealed containers
Environmental Precautions Prevent entry into drains, soil, and surface waters
Waste Disposal According to local regulations; incineration at licensed facilities

SECTION 19: OTHER NAMES AND SYNONYMS

Type Name
Turkish Names Heksenil Asetat, Heksenol Asetat, Yeşil Yaprak Aroması
English Names cis-3-Hexenyl Acetate, (Z)-3-Hexenyl Acetate, Leaf Acetate, Green Leaf Acetate
Chemical Names 3-Hexen-1-ol acetate, (Z)-Hex-3-en-1-yl acetate
CAS Number 3681-71-8
EC Number 222-960-1
FEMA Number 3171
PubChem CID 5367372

SECTION 20: SUMMARY AND CRITICAL NOTES

Product Summary

Parameter Value
Product cis-3-Hexenyl Acetate
CAS Number 3681-71-8
Appearance Colorless to pale yellow liquid
Odor Fresh, green, leafy, fruity
Boiling Point 75-76 °C (23 mmHg)
Primary Function Flavoring, fragrance component

Critical Notes

  1. Green Note: cis-3-Hexenyl acetate provides the characteristic "green leaf" note in flavors and fragrances.

  2. Natural Source: Naturally found in tea plants, perilla, green apples, bananas, and strawberries.

  3. FEMA GRAS: Approved as GRAS by FEMA (FEMA 3171) for food use.

  4. Flavor Component: Widely used in green tea, fruit, and fresh flavors.

  5. Fragrance Component: Used in perfumes and cosmetics for fresh, green notes.

  6. Sensory Profile: Fresh, green, leafy odor with fruity, banana-like undertones.

  7. cis Isomer: The cis (Z) isomer is the naturally occurring and most valuable form.

  8. Flammable: Flammable liquid; store away from heat and open flames.

  9. Stability: Stable under normal conditions; protect from air and light.

  10. Regulatory Status: Approved in food, cosmetic, and fragrance industries.

IMPORTANT DECLARATION: This Technical Data Sheet (TDS) is for informational purposes only and has been prepared based on available technical data. The user is responsible for determining the product's suitability for their specific application and for complying with all local, national, and international regulations. For complete safety, storage, use, transport, waste, and regulatory compliance information, refer to the official Safety Data Sheet (SDS/MSDS) provided by the manufacturer/supplier.

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