(CAS:5392-40-5) CITRAL

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CITRAL (CAS: 5392-40-5)

🔍 Professional Summary

Citral is a natural fragrance compound composed of an equal mixture of Geranial (trans-citral) and Neral (cis-citral). It is known for its strong, fresh lemon scent. It is primarily extracted from natural essential oils such as citronella, lemon, and lemongrass oils. It is widely used in the fragrance, flavor, cosmetic, and detergent industries to impart a citrusy, refreshing note.

🌸 Olfactory Description

- Fragrance Family: Citrus
- Main Notes: Fresh lemon, vibrant, green, herbal
- Secondary Notes: Slightly earthy, oily, soft acidic

⚠️ Safety & Handling

- Classified as a potential skin irritant and sensitizer.
- Avoid direct contact with eyes and concentrated exposure.
- Recommended at low percentages especially in skin-contact applications.

🧪 Chemical Profile

Property

Value

Trade Name

Citral

Chemical Name

3,7-Dimethyl-2,6-octadienal

CAS Number

5392-40-5

EC Number

226-394-6

Molecular Formula

C₁₀H₁₆O

Molecular Weight

152.23 g/mol

Isomers

Geranial (trans) / Neral (cis)

⚗️ Physical Properties

Property

Value

Appearance

Clear pale yellow liquid

Odor

Strong lemony, citrus, fresh

Density

0.888 - 0.894 g/cm³ at 20°C

Boiling Point

229 - 230°C

Melting Point

-10 to -8°C

Flash Point

92°C (closed cup)

Solubility

Insoluble in water, soluble in alcohols/oils

Vapor Pressure

0.04 mmHg at 25°C

Stability

Unstable in light and oxygen

👃 Sensory Evaluation

Attribute

Observation

Intensity

Very strong

Temporal Profile

Top and heart note, fades gradually

Balance

Neral is softer, Geranial is sharper

General Impression

Bright, clean, enhances freshness

🧪 Aromatic Structure Breakdown

Component

Approx. Percentage

CAS Number

Geranial

~50%

5392-40-5

Neral

~50%

106-26-3

🎶 Suggested Fragrance Accords

🍋 Citrus Accord

Component

Percentage

CAS Number

Citral

40%

5392-40-5

Limonene

30%

5989-27-5

Citronellal

20%

106-23-0

Aldehyde C-8

10%

124-13-0

🌿 Herbal Accord

Component

Percentage

CAS Number

Citral

35%

5392-40-5

Linalool

25%

78-70-6

Geraniol

25%

106-24-1

Cis-3-Hexenol

15%

928-96-1

🍏 Fruity Accord

Component

Percentage

CAS Number

Citral

30%

5392-40-5

Ethyl Maltol

25%

4940-11-8

Aldehyde C-8

25%

124-13-0

Isoamyl Acetate

20%

123-92-2

🌸 White Floral Accord

Component

Percentage

CAS Number

Citral

25%

5392-40-5

Hydroxycitronellal

30%

107-75-5

Nerol

25%

106-25-2

Phenyl Ethyl Alcohol

20%

60-12-8

🧴 Applications by Category

Category

Usage Description

Perfumes

Core and heart in citrus and floral blends

Cosmetics

Skin fresheners, creams, shampoos

Detergents

Adds freshness to cleaning products

Flavoring

Used in food-grade flavors (low concentration)

📄 IFRA Regulatory Limits

- Standard: As per IFRA – Substance: Citral
- IFRA Link: https://ifrafragrance.org/standards/IFRA_STD_015.pdf

Product Category

Maximum Level (%)

Leave-on products

0.6%

Rinse-off products

1.25%

Fine Fragrances

2.5%

Deodorants

0.2%

🔗 External References

- PubChem - Citral: https://pubchem.ncbi.nlm.nih.gov/compound/5392-40-5
- ECHA - Substance Citral: https://echa.europa.eu/substance-information/-/substanceinfo/100.009.631
- Wikipedia - Citral: https://en.wikipedia.org/wiki/Citral
- IFRA - Substance Citral: https://ifrafragrance.org/standards/IFRA_STD_015.pdf

🏁 Conclusion

Citral is a cornerstone ingredient in the world of natural perfumery, delivering an irreplaceable citrus sparkle in top notes.
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Please customer do their own research on the product and verify its proper use. This product cannot be returned.

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