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alpha-Terpinene

Product Name
alpha-Terpinene
CAS No.
99-86-5
Chemical Name
alpha-Terpinene
Synonyms
1,3-Cyclohexadiene, 1-methyl-4-(1-methylethyl)-;Terpilene;1-methyl-4-(1-methylethyl)-1,3-cyclohexadiene;A-TERPINENE;TERPINENE ALPHA;FEMA 3558;ALPHA-TERPINEN;α-Terpinene ,90%;1,3-p-menthadiene;P-MENTHA-1,3-DIENE
CBNumber
CB5266720
Molecular Formula
C10H16
Formula Weight
136.23
MOL File
99-86-5.mol
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alpha-Terpinene Property

Melting point:
-59.03°C (estimate)
Boiling point:
173-175 °C(lit.)
Density 
0.837 g/mL at 25 °C(lit.)
vapor pressure 
2.22hPa at 25℃
FEMA 
3558 | P-MENTHA-1,3-DIENE
refractive index 
n20/D 1.478(lit.)
Flash point:
115 °F
storage temp. 
2-8°C
solubility 
95% ethanol: soluble1ml/2ml, clear, colorless
form 
Liquid
color 
Clear colorless to light yellow
Specific Gravity
0.84
Odor
at 10.00 % in dipropylene glycol. woody terpene lemon herbal medicinal citrus
Odor Type
woody
Water Solubility 
Soluble in ether, alcohol, and ethanol (100 mg/ml). Insoluble in water.
Merck 
14,9170
JECFA Number
1339
BRN 
1853379
Dielectric constant
2.7000000000000002
Stability:
Light Sensitive
LogP
5.3 at 35℃
EPA Substance Registry System
1,3-Cyclohexadiene, 1-methyl-4-(1-methylethyl)- (99-86-5)
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Safety

Hazard Codes 
Xn,N,Xi
Risk Statements 
10-22-36/37/38-51/53
Safety Statements 
26-36/37-61-62-36
RIDADR 
UN 2319 3/PG 3
WGK Germany 
2
RTECS 
OS8060000
F 
10-23
TSCA 
Yes
HazardClass 
3.2
PackingGroup 
III
HS Code 
29021990
Toxicity
The acute oral LD50 value in rats was reported as 1.68 g/kg (1*46-1 -90 g/kg) (Moreno, 1973). Because of its action as a liver poison and methaemoglobin former, α-terpinene should be used very sparingly, or not at all, in foods (B?r & Griepentrog, 1967).
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H226Flammable liquid and vapour

H302Harmful if swallowed

H317May cause an allergic skin reaction

H319Causes serious eye irritation

H411Toxic 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.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
W355801
Product name
α-Terpinene
Purity
≥89%, FCC, FG
Packaging
1kg
Price
$78.7
Updated
2024/03/01
Sigma-Aldrich
Product number
W355801
Product name
α-Terpinene
Purity
≥89%, FCC, FG
Packaging
8kg
Price
$463
Updated
2024/03/01
Sigma-Aldrich
Product number
CRM40443
Product name
alpha-Terpinene solution
Purity
certified reference material, 2000?μg/mL in methanol, ampule of 1?mL
Packaging
1mL
Price
$105
Updated
2024/03/01
Sigma-Aldrich
Product number
86473
Product name
α-Terpinene
Purity
≥95.0% (GC)
Packaging
1ml
Price
$209
Updated
2024/03/01
Sigma-Aldrich
Product number
223182
Product name
α-Terpinene
Purity
85%
Packaging
100ml
Price
$51.5
Updated
2024/03/01
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alpha-Terpinene Chemical Properties,Usage,Production

Chemical Properties

alpha-Terpinene is a clear colorless to light yellow liquid with a woody, terpene, lemon odor with a lemony flavor, becoming bitter at high levels.   It dissolves in ethanol and most non-volatile oils but does not dissolve in water. It is found naturally in oils such as cardamom, sweet oregano, and coriander seed oil.

Occurrence

Reported found in roots, stems, leaves and flowers of Echinacea species. Also reported found in in tea tree oil, papaya fruit, grapefruit, lemon, lime, mandarin, oranage, spearmint, citrus peel oils, cranberry, currants, guava, grapes, raspberry, peach, carrot, celery, cinnamon, clove, cumin seed, ginger, peppermint and corn mint oils, other mentha oils, nutmeg, pepper, mace, parsley, thymus, rum, tea, filberts, pecans, soybeans, passion fruit, beans, sweet marjoram, starfruit, mango, cardamom, coriander seed, origanum, prickly pear, litchi, calamus, dill herb, lovage seed and leaf, juniper berries, laurel, fennel, rosemary, buchu oil, tur meric, sage, nectarines and many other sources.

Uses

It can be used as a chemical fragrance essential oil and spices. It is used as a flavoring and fragrance chemical used in the personal care and cosmetic and food industries. Also used in the pharmaceutical, electronics, food processing, semi-conductor manufacturing industries.

Uses

α-Terpinene is suitable for use in a study to evaluate the antimycotic properties of Melaleuca alternifolia essential oil (tea tree oil, TTO). 1 It is suitable for use to investigate the in vitro antibacterial activity of the essential oils extracted from the fruits of Coriandrum sativum L. and Foeniculum vulgare Miller var. vulgare (Miller).

Production Methods

alpha-Terpinene can be produced
1) by isolation from the Terpene fraction of sweet Orange oil or "Orange terpenes". The title material may constitute as much as 8 to 10% of the total Monoterpenes.
2) by isolation from fractions of American Turpentine oil.
3) from 1-Methyl-4-iso-propylcyclohexadien-1,3-one-2.
4) from Terpinene dihydrochloride with Aniline.

Preparation

May be obtained by isolation from the terpene fraction of sweet orange oil or orange terpenes (8 to 10% of the total monoterpenes); by isolation from fractions of American turpentine oil; from 1-methyl-4-isopropylcyclohexadien-1,3-one-2; also from terpinene dihydrochloride with aniline.

Definition

ChEBI: Alpha-terpinene is one of three isomeric monoterpenes differing in the positions of their two double bonds (beta- and gamma-terpinene being the others). In alpha-terpinene the double bonds are at the 1- and 3-positions of the p-menthane skeleton. It has a role as a volatile oil component and a plant metabolite. It is a monoterpene and a cyclohexadiene.

Aroma threshold values

Aroma characteristics at 10%: citrusy, woody, terpy with camphoraceous and thymol notes; it has spicy and juicy citrus nuances.

Taste threshold values

Taste characteristics at 5 to 100 ppm: terpy, woody, piney, citrus lemon and lime with spice and mint nuances.

General Description

α-Terpinene, a volatile essential oil derived from Melaleuca alternifolia, shows antimicrobial properties against various human pathogens.

Flammability and Explosibility

Flammable

Biochem/physiol Actions

Odor at 10%

Pharmacology

Combinations of terpenes, such as terpinene, with nonionic surfactants and stabilizers have been patented for use as gallstone solvents. Artificial or human cholesterol calculi placed in terpinene with or without human bile at 37°C were dissolved within 1-2 hr (Hisamitsu Pharmaceutical Co., Inc., 1973).

Safety Profile

Moderately toxic by ingestion. When heated to decomposition it emits acrid smoke and irritating fumes.

alpha-Terpinene Preparation Products And Raw materials

Raw materials

Orange sweet oil Turpentine oil TERPENE

Preparation Products

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alpha-Terpinene Suppliers

Americas 1 Belgium 1 China 239 Europe 1 France 2 Germany 4 India 5 Japan 4 Spain 1 Switzerland 2 United Kingdom 3 United States 33 USA 1 Global 297
TargetMol Chemicals Inc.
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View Lastest Price from alpha-Terpinene manufacturers

Hebei Zhuanglai Chemical Trading Co.,Ltd
Product
Alpha Terpinene 99-86-5
Price
US $180.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
20ton
Release date
2024-04-30
Hebei Weibang Biotechnology Co., Ltd
Product
ALPHA-TERPINENE 99-86-5
Price
US $0.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
500000kg
Release date
2024-10-28
Hebei Yanxi Chemical Co., Ltd.
Product
ALPHA-TERPINENE 99-86-5
Price
US $10.00-1.00/kg
Min. Order
1kg
Purity
0.99
Supply Ability
20 tons
Release date
2023-09-15

99-86-5, alpha-TerpineneRelated Search:

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