Prenol: A Versatile and Widely Used Chemical Compound

Prenol, or 3-methyl-2-buten-1-ol, is a monoterpenoid with a citrus scent used in fragrances, flavors, and pharmaceuticals. It's involved in Vitamin E production and as a biofuel precursor, highlighting its importance in sustainability and various industries.

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Exploring Prenol: A Comprehensive Introduction

Prenol, known scientifically as 3-methyl-2-buten-1-ol, is an organic compound that falls under the category of monoterpenoids, which are a type of terpene. These compounds are commonly found in the essential oils of plants and are characterized by their strong aromas. Prenol's structure features a hydroxyl group (-OH) attached to the first carbon of a five-carbon chain, with a double bond between the second and third carbon atoms and a methyl group on the third carbon. This structure imparts prenol with its distinct physical and chemical properties, such as its colorless, oily appearance and a potent citrus scent. Prenol is moderately soluble in water, but it dissolves readily in organic solvents like alcohol and ether.
Glass laboratory bottle with transparent liquid, pure prenol, on white surface, green plant in blurred terracotta pot, laboratory equipment in background.

The Molecular Structure and Physical Properties of Prenol

Prenol's molecular structure directly influences its physical properties. It has a molecular weight of 86.14 g/mol and a density of 0.85 g/cm³. The compound boils at 129 °C and has a water solubility of 0.83 g/100 mL at 20 °C. Its refractive index, an indicator of how much it bends light, ranges from 1.434 to 1.436 at 20 °C. The molecular formula C5H10O denotes the presence of five carbon atoms, ten hydrogen atoms, and one oxygen atom, arranged to form the primary alcohol with a double bond, characteristic of unsaturated alcohols.

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1

______ has a colorless, oily look and a strong ______ smell, due to its unique molecular structure.

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Prenol citrus

2

Prenol molecular weight

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86.14 g/mol, indicative of its mass relative to other substances.

3

Prenol density at 20 °C

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0.85 g/cm³, measures mass per unit volume, less dense than water.

4

Prenol refractive index at 20 °C

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1.434 to 1.436, quantifies light bending as it passes through prenol.

5

Prenol's ______ bond and ______ group significantly influence its chemical interactions.

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unsaturated hydroxyl

6

Prenol's role in fragrance industry

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Used for crafting citrus scents due to its citrus aroma.

7

Prenol in food and beverage sector

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Added as a flavoring agent for citrusy taste.

8

Prenol's contribution to sustainable energy

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Utilized in biodiesel production via transesterification.

9

Prenol is utilized in biodiesel production, providing a ______ alternative to fossil fuels.

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renewable

10

Prenol's unique molecular structure

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Enables diverse chemical reactivity, crucial for applications in fragrance, flavor, and pharmaceuticals.

11

Prenol's role in Vitamin E production

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Acts as an intermediate, highlighting its importance in manufacturing essential nutrients.

12

Prenol in renewable energy

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Used as a component in biodiesel, contributing to sustainable energy solutions.

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