Geranial
Description
Geranial (CAS 141-27-5), also known commercially as trans-citral or lemonal, is the trans-isomer of citral and the primary contributor to the intense lemon character found in citral mixtures.
It functions as a key aroma chemical and flavoring agent, and serves as a synthetic precursor in the production of vitamins, ionones, and other fragrance compounds.
In flavor formulations, geranial delivers a sharp, fresh citrus note used in beverages, confectionery, and citrus-type flavor blends where high-impact lemon character is required.
Fragrance manufacturers use it as a building block for ionones and pseudoionones, which underpin violet and woody fragrance families across fine perfumery and functional products.
In personal care, it contributes to citrus-forward scent profiles in soaps, shampoos, and lotions. The pharmaceutical and nutraceutical industries source it as an intermediate.
It is used specifically in the synthesis of Vitamin A and beta-carotene. Geranial is supplied as a pale yellow liquid, typically as part of citral mixtures or in isolated isomer form.
Standard commercial grades include technical and fragrance-grade specifications, with high-purity isolates available for pharmaceutical synthesis applications.
Packaging ranges from small drums to bulk quantities suited to industrial fragrance and synthesis operations, ensuring stability and quality for diverse manufacturing needs.
Physical Properties
| Boiling Point | 92-93 °C @ Press: 2.6 Torr |
| Density | 0.8888 g/cm³ @ Temp: 20 °C |
| Color | Colourless to Light Yellow |
| Odor | at 100.00 %. citrus lemon |
| Form | Oil |
| Vapor Pressure | 4.5-105Pa at 20-56.87℃ |
| Refractive Index | nD20 1.4898 |
| Log P | 2.76-3.445 at 25℃ |
Safety & Handling (Learn More)
Documentation
Other Names
trans-citral|trans-3,7-Dimethyl-2,6-octadienal|lemonal|Geranal|Genanial|Citral-A|beta-Geranial|alpha-Citral
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