beta-Pinene Property

Melting point:

-61°C

Boiling point:

167°C

Density 

0.859

refractive index 

1.4782

FEMA 

2903 | BETA-PINENE

Flash point:

43°C

Odor

at 10.00 % in dipropylene glycol. dry woody resinous pine hay green eucalyptus camphoreous

Odor Type

herbal

Water Solubility 

12mg/L(25 ºC)

JECFA Number

1330

Merck 

7446

Stability:

Stable. Flammable. Incompatible with strong oxidizing agents.

LogP

4.37

CAS DataBase Reference

127-91-3(CAS DataBase Reference)

NIST Chemistry Reference

Beta-pinene(127-91-3)

EPA Substance Registry System

.beta.-Pinene (127-91-3)

Safety

Risk Statements 

10

Safety Statements 

16

RIDADR 

2368

RTECS 

DT5077000

Hazardous Substances Data

127-91-3(Hazardous Substances Data)

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H226Flammable liquid and vapour

H304May be fatal if swallowed and enters airways

H315Causes skin irritation

H317May cause an allergic skin reaction

H410Very toxic to aquatic life with long lasting effects

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P273Avoid release to the environment.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

beta-Pinene Chemical Properties,Usage,Production

Description

Beta-pinene is a component of turpentine. Concentrations vary depending on the source and seem to be high er in European (Portuguese) than in Asian (Indonesian) turpentines.

Chemical Properties

liquid

Chemical Properties

β-Pinene occurs in many essential oils. Optically active and racemic β-pinenes are present in turpentine oils, although in smaller quantities than αα-pinene. (+)-β-Pinene, (1R,5R)-6,6-dimethyl-2-methylenebicyclo(3.1.1)heptane,; (?)-β-Pinene, (1S,5S)-6,6-dimethyl-2-methylenebicyclo(3.1.1)heptane,. β-Pinene is similar to α-pinene in its reactions. Pyrolytic cleavage to myrcene, the startingmaterial for acyclic terpenes, is used on an industrial scale.Addition of formaldehyde results in the formation of nopol; nopyl acetate is used as a fragrance material. β-Pinene is produced in large quantities by distillation of turpentine oils. It is used as a fragrance material in household perfumery.However,most β-pinene is used in the production of myrcene.

Chemical Properties

β-Pinene has a characteristic turpentine odor with a dry, woody or resinous aroma.

Occurrence

Usually occurring together with α-pinene but in smaller amounts; the d- and l-forms are reported found in the essential oils of various Artemisae and several Cupressaceae, in coriander and cumin; the l-form is a constituent of several citrus oils. β-Pinene is reported found in over 190 natural products including apple, apricot, many citrus juices and peel oils, bilberry, cranberry, lingonberry, blackberry, currants, guava, raspberry, strawberry, basil, carrot, celery, cooked potato, bell pepper, tomato, anise seed oil, cinnamon, cassia leaf, clove, cumin, ginger, Mentha oils, nutmeg, mace, pepper, parsley, thyme, Swiss and cheddar cheese, cream, fatty fish, fried chicken, beef fat, hop oil, rum, bourbon whiskey, tea, roasted filberts, pecans, oats, soybean, plum, mushroom, sweet and wild marjoram, starfruit, mango, tamarind, cardamom, coriander, gin, rice, litchi, calamus, dill, lovage, caraway seed, buckwheat, laurel, fennel, kiwifruit, myrtle leaf and berry, rosemary, buchu oil, Bourbon vanilla, Spanish and clary sage, nectarine, crayfish, clam, cape gooseberry, anise hyssop, angelica root oil, Roman and German chamomile oil, eucalyptus oil, bullock’s heart and mastic gum leaf and fruit oil.

Preparation

Isolated from American turpentine; also by conversion from α-pinene; as an intermediate extremely important for the manufacture of citral, citronellol, hydroxycitronellal, geraniol, citronellal, linalool, ionones, methylionones and menthol.

Definition

ChEBI: An isomer of pinene with an exocyclic double bond. It is a component of essential oils from many plants.

Aroma threshold values

Detection: 140 ppb. Aroma characteristics at 10%: cooling, woody, piney and turpentine-like with a fresh minty, eucalyptus and camphoraceous note with a spicy peppery and nutmeg nuance.

Taste threshold values

Taste characteristics at 15 to 100 ppm: fresh, piney and woody, terpy and resinous with a slight minty, spicy and camphoraceous nuance.

Contact allergens

Beta-pinene is a component of turpentine. Concentrations vary with the source and seem higher in European (Portuguese) than in Asian (Indonesian) turpentine.

Safety Profile

Mddly toxic by ingestion. A skin irritant. Flammable liquid. When heated to decomposition it emits acrid smoke and irritating fumes.