(-)-α-Pinene | CAS No. 7785-26-4

(-)-α-Pinene

Basic Information

View in Editor

CAS Number

7785-26-4

Molecular Formula

C10H16

Molecular Weight

136.23 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Hydrocarbons

Basic Physical Properties

Melting Point

-64 °C

Boiling Point

155°C

Density

0.858 g/mL at 20 °C

Solubility

Methanol; Chloroform

Refractive Index

n20/D 1.466

Vapor Pressure

~3 mmHg ( 20 °C)

Specific Rotation

-41.5 º (c=neat)

SMILES

View in Editor

CC1(C)[C@@]2([H])CC=C(C)[C@]1([H])C2

InChI

InChI=1S/C10H16/c1-7-4-5-8-6-9(7)10(8,2)3/h4,8-9H,5-6H2,1-3H3

InChIKey

GRWFGVWFFZKLTI-UHFFFAOYSA-N

LogP

2.99870

Complexity

186

Safety Information

View Safety Information

GHS Hazard Pictograms

H226

H315

H317

H319

H335

H410

Hazard Statement

H226 Flammable liquid and vapor
Flammable liquids

H315 Causes skin irritation
Skin corrosion/irritation

H317 May cause an allergic skin reaction
Sensitization, Skin

H319 Causes serious eye irritation
Serious eye damage/eye irritation

H335 May cause respiratory irritation
Specific target organ toxicity, single exposure; Respiratory tract irritation

H410 Very toxic to aquatic life with long lasting effects
Hazardous to the aquatic environment, long-term hazard

Hazard Class

Class 3 Class 3

Storage Conditions

2-8℃

Explosive Limit

0.8%(V)

Synonyms & References

English

(1S)-(-)-Alpha-Pinene
(-)-alpha-Pinene
(1S)-2,6,6-Trimethylbicyclo[3.1.1]hept-2-ene
α-Pinene
(-)-α-pinene
(-)-1S,5S-α-pinene
(?)-α-Pinene
(−)-α-Pinene
(1S)-(-)-α-Pinene
(1S,5S)-2,6,6-trimethylbicyclo[3.1.1]hept-2-ene
ALPHA-PINENE
PINENE, (1S)-(-)-alpha-(SG)
(-)-pin-2(3)-ene
1S-(-)-a-pinene
1S-α-Pinene
2,6,6-Trimethylbicyclo[3.1.1]hept-2-ene-, (1S,5S)-
Bicyclo[3.1.1]hept-2-ene, 2,6,6-trimethyl-, (1S)-
L-α-Pinene
α-Pinene, (-)-
(1S,5S)-2-Pinene
DL-ALPHA-PINENE
(1S,5S)-alpha-pinene
TZR3GM95PR
Bicyclo[3.1.1]hept-2-ene, 2,6,6-trimethyl-, (1S,5S)-
(1S,5S)-4,6,6-trimethylbicyclo[3.1.1]hept-3-ene
DL-Pin-2(3)-ene
DSSTox_CID_9290
DSSTox_RID_78752
DSSTox_GSID_29290
Bicyclo(3.1.1)hept-2-ene, 2,6,6-trimethyl-, (1S,5S)-
Bicyclo[3.1.1]hept-2-ene,2,6,6-trimethyl-, (1S,5S)-

MDL Number

MFCD00064145

Customs Code

29021910

FAQ

What are the physical and chemical properties of (-)-α-Pinene (CAS: 7785-26-4)?

(-)-α-Pinene is a cyclic monoterpene with a strong pine scent. It is a colorless to slightly yellowish liquid with a molecular weight of 136.23 g/mol. The compound has a specific gravity of 0.8662 and is soluble in ethanol, ether, and other organic solvents. It is moderately reactive, especially with bases and oxidizing agents.

How is (-)-α-Pinene (CAS: 7785-26-4) typically synthesized?

(-)-α-Pinene is commonly synthesized via catalytic hydrogenation of d-limonene with a rhodium-based catalyst. The stereoselective hydrogenation yields high purity (-)-α-pinene with good yield and selectivity. Alternative methods include bioconversion processes using microorganisms capable of producing α-pinene.

What industries use (-)-α-Pinene (CAS: 7785-26-4)?

(-)-α-Pinene is widely used in the fragrance and flavor industry, as well as in the pharmaceutical, polymer, and sensor industries. It is also utilized in the production of adhesives, coatings, and as a component in certain semiconductors and electronic materials.

What precautions should be taken when handling (-)-α-Pinene (CAS: 7785-26-4)?

When handling (-)-α-Pinene, it is important to use appropriate personal protective equipment (PPE), such as gloves, goggles, and a lab coat. Work in a well-ventilated area or a fume hood. Store the compound in a cool, dry place away from heat sources. Follow standard safety procedures and have a Material Safety Data Sheet (MSDS) readily available. In case of spill, avoid inhalation of the fumes and use appropriate spill cleanup methods as outlined in the MSDS.