Alpha Pinene (CAS 2437-95-8): Comprehensive Guide to This Versatile Monoterpene

Alpha Pinene is a naturally occurring monoterpene hydrocarbon and one of the most widely distributed terpenes in the plant kingdom. With the CAS number 2437-95-8, this aromatic compound is found in the essential oils of coniferous trees, rosemary, sage, and many other plants. It serves as a fundamental building block in the fragrance, flavor, pharmaceutical, and chemical industries.

What is Alpha Pinene?

Alpha Pinene (α-Pinene) is an organic bicyclic monoterpene with the molecular formula C10H16. It is the primary component of pine needle oil andturpentine, giving these substances their characteristic fresh, piney aroma. This compound exists in two enantiomers: (R)-α-Pinene and (S)-α-Pinene, each exhibiting slightly different properties and occurrences in nature.

This versatile terpene appears as a colorless to pale yellow liquid with a distinct woody, pine-like odor. It is highly volatile and flammable, with excellent solubility in alcohol and oils but poor solubility in water.

What Are the Benefits of Alpha Pinene?

1. Anti-inflammatory Properties

Alpha Pinene exhibits significant anti-inflammatory effects, making it valuable in pharmaceutical applications. Research has shown that this terpene can inhibit the production of pro-inflammatory mediators, providing relief in various inflammatory conditions. It is particularly studied for its potential in treating respiratory inflammation and arthritis.

2. Antimicrobial Activity

Studies have demonstrated that Alpha Pinene possesses antimicrobial properties against various bacteria and fungi. This makes it useful in:

• Preservative formulations for cosmetics and personal care products
• Natural antimicrobial agents in food preservation
• Disinfectant and sanitizer formulations

3. Bronchodilator Effects

Alpha Pinene has been shown to have bronchodilator properties, helping to relax airway muscles and improve breathing. This makes it a valuable component in:

• Aromatherapy blends for respiratory health
• Inhalation therapies for asthma and bronchitis
• Decongestant formulations

4. Antioxidant Activity

As a natural antioxidant, Alpha Pinene helps protect cells from oxidative stress caused by free radicals. This property contributes to its potential anti-aging and health-protective effects in various applications.

5. Neuroprotective Effects

Research suggests that Alpha Pinene may have neuroprotective properties, potentially benefiting cognitive function and protecting against neurodegenerative diseases. Studies indicate it may help improve memory and learning capabilities.

6. Analgesic Properties

Alpha Pinene has demonstrated analgesic (pain-relieving) effects in various studies. It is often incorporated into topical formulations for muscle and joint pain relief.

What Are the Uses of Alpha Pinene?

Fragrance and Flavor Industry

Alpha Pinene is extensively used in the fragrance industry as a key ingredient in:

• Perfumes: As a top note in forest, pine, and citrus fragrances
• Air fresheners: Providing fresh, clean scents
• Cosmétiques: In soaps, shampoos, and skincare products
• Household products: Cleaning agents and detergents

In the flavor industry, Alpha Pinene contributes to:

• Natural flavoring for foods and beverages
• Mint and pine flavor profiles
• Chewing gum and confectionery flavors

Pharmaceutical Applications

The pharmaceutical industry utilizes Alpha Pinene in:

• Respiratory medications: Decongestants, expectorants, and cough suppressants
• Topical analgesics: Muscle rubs and anti-inflammatory creams
• Aromatherapy oils: For stress relief and respiratory health
• Antimicrobial formulations: As a natural preservative and active ingredient

Chemical Synthesis

Alpha Pinene serves as an important intermediate in chemical synthesis:

• Fragrance chemicals: Production of pinane derivatives, borneol, and camphor
• Flavor compounds: Synthesis of various terpene derivatives
• Fine chemicals: Starting material for specialty chemical production
• Polymers: In some polymer and resin applications

Agriculture and Horticulture

In agricultural applications, Alpha Pinene is used as:

• Natural pesticide and insect repellent
• Plant growth regulator component
• Post-harvest preservation agent

Aromatherapy and Wellness

Alpha Pinene is a popular choice in aromatherapy for:

• Promoting mental clarity and focus
• Respiratory support and breathing ease
• Creating an energizing, refreshing atmosphere
• Stress relief and mood enhancement

Safety and Side Effects

Alpha Pinene is generally considered safe when used appropriately, but certain precautions should be observed:

General Safety

• Generally recognized as safe (GRAS) for flavoring purposes
• Approved for use in cosmetics and fragrances
• Low toxicity at typical exposure levels

Potential Side Effects

• Skin irritation or sensitization in some individuals
• Respiratory irritation at high concentrations
• Allergic reactions in sensitive people

Précautions

• Pregnancy and breastfeeding: Consult healthcare provider before use
• Skin contact: May cause irritation; use in diluted forms
• Inhalation: Use in well-ventilated areas
• Internal use: Not recommended without professional guidance

Statut réglementaire

Alpha Pinene is approved for use in:

• Food flavorings (FDA GRAS)
• Cosmetics and personal care products (IFRA guidelines)
• Fragrance compositions (RIFM standards)
• Pharmaceutical formulations

Chemical Specifications

Property	Valeur
Numéro CAS	2437-95-8
Formule moléculaire	C10H16
Poids moléculaire	136.23 g/mol
IUPAC Name	(4R)-4,7,7-Trimethylbicyclo[3.1.1]hept-3-ene
Apparence	Liquide incolore à jaune pâle
Odeur	Fresh, piney, woody
Point d'ébullition	155-156°C
Densité	0.857-0.868 g/cm³ at 20°C
Solubilité	Soluble in alcohol, oils; insoluble in water
Point d'éclair	33°C (closed cup)
Rotation optique	+25° to +50° (for R-enantiomer)

Frequently Asked Questions

What is the CAS number for Alpha Pinene?

The CAS number for Alpha Pinene is 2437-95-8.

What is the difference between Alpha Pinene and Beta Pinene?

Alpha Pinene and Beta Pinene are isomers with slightly different chemical structures. Alpha Pinene has a bicyclic structure with the double bond in a specific position, while Beta Pinene has the double bond in a different location. Both have pine-like aromas but differ slightly in their fragrance profiles and applications.

Is Alpha Pinene safe for skin application?

Alpha Pinene can be used in topical applications when properly diluted. It is generally safe for most people but may cause skin irritation or sensitization in some individuals. Always patch test before widespread use.

Can Alpha Pinene be used in food?

Yes, Alpha Pinene is FDA-approved as a Generally Recognized as Safe (GRAS) substance for use as a flavoring agent in foods and beverages.

What are the natural sources of Alpha Pinene?

Alpha Pinene is found in many essential oils, particularly from coniferous trees (pine, fir, spruce), as well as rosemary, sage, basil, and citrus fruits.

How should Alpha Pinene be stored?

Store Alpha Pinene in a cool, dry, well-ventilated area in tightly sealed containers. Keep away from heat, sparks, and open flames due to its flammable nature.

Does Alpha Pinene have insecticidal properties?

Yes, Alpha Pinene has demonstrated insecticidal and repellent properties against various insects, making it useful in natural pest control formulations.

Why Choose Our Alpha Pinene?

• High Purity: Our Alpha Pinene meets strict quality standards with ≥95% purity
• Consistent Quality: Each batch is rigorously tested to ensure consistent performance
• Natural Source: Derived from high-quality essential oils
• Competitive Pricing: Factory-direct pricing for bulk orders
• Reliable Supply: Stable production capacity to meet your requirements
• Technical Support: Our team provides comprehensive product information
• Global Shipping: Efficient logistics to deliver products worldwide

Related Products

If you’re interested in Alpha Pinene, you may also find these related products useful:

• Alpha Lipoic Acid (CAS 1077-28-7)
• Beta Pinene (CAS 127-91-3)
• Eucalyptus Oil (CAS 8000-48-4)
• Turpentine Oil (CAS 8006-64-2)

Contact us today to learn more about Alpha Pinene and our other chemical products. Our team is ready to assist with your sourcing needs.