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alpha-Pinene

CAS No.80-56-8
Chemical Name:alpha-Pinene
CBNumber:CB8209087
Molecular Formula:C10H16
Formula Weight:136.23
MOL File:80-56-8.mol

alpha-Pinene Property

Melting point -55°C
Boiling point 155-156 °C(lit.)
Density 0.858 g/mL at 25 °C(lit.)
vapor pressure 6.9hPa at 20℃
FEMA 2902 | ALPHA-PINENE
refractive index n20/D 1.465(lit.)
Flash point 90 °F
storage temp. 2-8°C
solubility Soluble in ethanol;
form Liquid
color Clear colorless
Odor at 10.00 % in dipropylene glycol. fresh camphor sweet pine earthy woody
Odor Type herbal
Odor Threshold 0.018ppm
Water Solubility insoluble
Merck 13,7527
JECFA Number 1329
Dielectric constant 2.7（20℃）
Stability Stable. Flammable. Incompatible with strong oxidizing agents.
LogP 4.46 at 20℃
CAS DataBase Reference 80-56-8(CAS DataBase Reference)
Substances Added to Food (formerly EAFUS) ALPHA-PINENE
EWG's Food Scores 1
FDA UNII JPF3YI7O34
NIST Chemistry Reference «alpha»-Pinene(80-56-8)
EPA Substance Registry System .alpha.-Pinene (80-56-8)
UNSPSC Code 85151701
NACRES NA.24

Safety

Hazard Codes :Xi,N,Xn,F
Risk Statements :10-36/37/38-43-50-65-51/53-38-36/38-20
Safety Statements :26-36/37-61-37/39-29-16-36/37/39-7/9-62
RIDADR :UN 2368 3/PG 3
WGK Germany :1
RTECS :DT7000000
Autoignition Temperature :491 °F
HazardClass :3.2
PackingGroup :III
HS Code :29021990
Hazardous Substances Data :80-56-8(Hazardous Substances Data)

NFPA 704:

	3
1		0

Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal wordDanger
Hazard statements H226-H304-H315-H317-H410
Precautionary statements P210-P273-P280-P301+P310-P303+P361+P353-P331

alpha-Pinene Price More Price(10)

Brand: Sigma-Aldrich
Product number: 147524
Product name : α-Pinene
Purity: 98%
Packaging: 5ML
Price: ₹4377.15
Updated: 2022/06/14
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Brand: Sigma-Aldrich(India)
Product number: 147524
Product name : α-Pinene
Purity: 98%
Packaging: 5ML
Price: ₹4377.15
Updated: 2022/06/14
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Brand: Sigma-Aldrich(India)
Product number: PHR2427
Product name : D-Camphor Impurity A, a-pinene
Purity: certified reference material, pharmaceutical secondary standard
Packaging: 100MG
Price: ₹43216.65
Updated: 2022/06/14
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Brand: Sigma-Aldrich
Product number: 147524
Product name : α-Pinene
Purity: 98%
Packaging: 250ML
Price: ₹10223.63
Updated: 2022/06/14
Buy: Buy

Brand: Sigma-Aldrich(India)
Product number: 147524
Product name : α-Pinene
Purity: 98%
Packaging: 250ML
Price: ₹10223.63
Updated: 2022/06/14
Buy: Buy

alpha-Pinene Chemical Properties,Usage,Production

Description Alpha-pinene is the major constituent of turpentine (about 80%). It exists as a levogyre form in European turpentines, and as a dextrogyre form in turpentines found in North America. Sensitization mainly occurs in painters, polishers and varnishers, and in those in the perfume and ceramics industry.
Chemical Properties α-Pinene has a characteristic odor of pine. It is turpentine-like. The oxidized material has a resin-like odor.
Chemical Properties liquid with a turpentine odour
Chemical Properties α-Pinene is the most widespread pinene isomer. (+)-α-Pinene, (1R,5R)-2,6,6-trimethylbicyclo[3.3.1]hept-2-ene, occurs, for example, in oil from Pinus palustris Mill., at a concentration up to 65%; oil from Pinus pinaster Soland and American oil from Pinus caribaea contain 70% and 70–80%, respectively, of the laevorotatory isomer, (?)-α-Pinene, (1S,5S)-2,6,6-trimethylbicyclo[3.3.1]hept-2-ene.
α-Pinene undergoes many reactions, of which the following are used in the fragrance industry: upon hydrogenation, α-pinene is converted to pinane, which has become an important starting material in the industrial processes used in the fragrance and flavor industry. α-Pinene can be isomerized to β-pinene with high selectivity for β-pinene formation. Hydration with simultaneous ring opening yields terpineol and cis-terpin hydrate. Pyrolysis of α-pinene yields a mixture of ocimene and alloocimene.
Pure α-pinene is obtained by distillation of turpentine oils. As a fragrance substance, it is used to improve the odor of industrial products.However, it is farmore important as a starting material in industrial syntheses, for example, terpineols, borneol, and camphor.
Occurrence The structure would account for the presence of four optically active and two optically inactive isomers; although only d-, l-, and dl-α-pinene are known, however; presence of one or more isomers has been reported in more than 400 essential oils; in the largest amounts it has been reported found in Achillea millefolium (d-), Artemisia tridentata (d-), Italian rosemary (l-), wild thyme (l-), French lavender (l-), coriander (d-, dl-), cumin (d, dl-), labdanum (l-), neroli (l-), lemon, Litsea cubeba (d-) and ylang-ylang (d-). It is also reported in over 200 natural products including apple, apricot, many citrus juices and peel oils, bilberry, cranberry, lingonberry, blackberry, currants, guava, raspberry, strawberry, orange, lime, grapefruit, mandarin, tangerine oils and juices, various spices, mint essential oils, carrot, celery, cooked potato, bell pepper, tomato, anise, 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.
Uses Reference Standard in the analysis of herbal medicinal products
Uses α-Pinene was used as standard in headspace solid-phase microextraction-gas chromatographic analysis of volatile compounds in virgin olive oils. It was used in the synthesis of cesium-doped heteropolyacid having potential application in biodiesel synthesis.
Definition ChEBI: A pinene that is bicyclo[3.1.1]hept-2-ene substituted by methyl groups at positions 2, 6 and 6 respectively.
Production Methods α-Pinene occurs naturally in a variety of trees and shrubs, including more than 400 essential oils, and air concentrations near pine forests may reach 500–1200 mg/m3. Total U.S. emission of α-pinene from deciduous and coniferous forests amounts to 6.6 million tons annually. An estimated emission rate of α-pinene from natural sources to the atmosphere is 1.84×10 ^-10 g/cm³/s.
Preparation From turpentine, by distillation.
Aroma threshold values Detection: 2.5 to 62 ppb. Aroma characteristics at 1.0%: terpy citrus and spicy, woody pine and turpentinelike with a slight cooling camphoraceous nutmeglike nuance, a fresh herbal lift and a tropical fruit top note.
Taste threshold values Taste characteristics at 10 ppm: intense, woody, piney and terpy with camphoraceous and turpentine notes. It has herbal, spicy and slightly tropical mango nuances.
General Description A clear colorless liquid with a turpentine odor. Flash point 91°F. Less dense than water and insoluble in water. Vapors are heavier than air. Used as a solvent.
Air & Water Reactions Highly flammable. Insoluble in water.
Reactivity Profile alpha-Pinene may react vigorously with strong oxidizing agents. May react exothermically with reducing agents to release gaseous hydrogen.
Health Hazard Harmful if swallowed, inhaled or absorbed through skin. High concentrations are extremely destructive to mucous membrane and upper respiratory tract, eyes and skin. Symptoms of exposure may include burning sensation, coughing, wheezing, laryngitis, shortness of breath, headache, nausea and vomiting.
Fire Hazard Special Hazards of Combustion Products: Vapor may travel considerable distance to source of ignition and flashback. Container explosion may occur during fire conditions. Forms explosive mixtures in air.
Contact allergens Alpha-pinene is the major constituent of turpentine (about 80%). It exists in levogyre form in European turpentine and in dextrogyre form in turpentine found in North-Americans. Sensitization occurs mainly in painters, polishers, and varnishers, and in those in the perfume and in the ceramics industry.
Safety Profile A deadly poison by inhalation. Moderately toxic by ingestion. An eye, mucous membrane, and severe human skin irritant. Flammable liquid. A dangerous fire hazard when exposed to heat, flame, or oxidizing materials. To fight fire, use foam, Co2, dry chemical. Explodes on contact with nitrosyl perchlorate.
Toxics Screening Level The ITSL for α-pinene is 1120 μg/m3 based on an 8-hour averaging time.