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ChemicalBook >> CAS DataBase List >>alpha-Terpinene

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
Molecular Weight:
136.23
MDL Number:
MFCD00001534
MOL File:
99-86-5.mol
MSDS File:
SDS
Last updated:2025-01-27 09:38:02

alpha-Terpinene Properties

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
biological source synthetic
Water Solubility Soluble in ether, alcohol, and ethanol (100 mg/ml). Insoluble in water.
JECFA Number 1339
Merck 14,9170
BRN 1853379
Dielectric constant 2.7000000000000002
Stability Light Sensitive
LogP 5.3 at 35℃
Substances Added to Food (formerly EAFUS) ALPHA-TERPINENE
FDA 21 CFR 172.515
EWG's Food Scores 1-2
FDA UNII I24X278AP1
EPA Substance Registry System 1,3-Cyclohexadiene, 1-methyl-4-(1-methylethyl)- (99-86-5)
UNSPSC Code 41116107
NACRES NA.24

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictogramsGHS hazard pictogramsGHS hazard pictograms
GHS02,GHS07,GHS09
Signal word  Warning
Hazard statements  H226-H302-H317-H319-H411
Precautionary statements  P210-P273-P280-P301+P312-P303+P361+P353-P305+P351+P338
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).
NFPA 704
2
2 0

alpha-Terpinene price More Price(30)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich W355801 α-Terpinene ≥89%, FCC, FG 99-86-5 1kg $78.7 2024-03-01 Buy
Sigma-Aldrich W355801 α-Terpinene ≥89%, FCC, FG 99-86-5 8kg $463 2024-03-01 Buy
Sigma-Aldrich CRM40443 alpha-Terpinene solution certified reference material, 2000?μg/mL in methanol, ampule of 1?mL 99-86-5 1mL $105 2024-03-01 Buy
Sigma-Aldrich 86473 α-Terpinene ≥95.0% (GC) 99-86-5 1ml $209 2024-03-01 Buy
Sigma-Aldrich 223182 α-Terpinene 85% 99-86-5 100ml $51.5 2024-03-01 Buy
Product number Packaging Price Buy
W355801 1kg $78.7 Buy
W355801 8kg $463 Buy
CRM40443 1mL $105 Buy
86473 1ml $209 Buy
223182 100ml $51.5 Buy

alpha-Terpinene Chemical Properties,Uses,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

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).

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.

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.

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.

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.

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.

Global( 307)Suppliers
Supplier Tel Email Country ProdList Advantage
Hebei Chuanghai Biotechnology Co., Ltd 		+86-15531157085 +86-15531157085 abby@chuanghaibio.com China 8806 58
Hebei Mujin Biotechnology Co.,Ltd 		+86 13288715578 +8613288715578 sales@hbmojin.com China 12820 58
Hebei Yanxi Chemical Co., Ltd. 		+8617531153977 allison@yan-xi.com China 5855 58
Hebei Chuanghai Biotechnology Co,.LTD 		+86-13131129325 sales1@chuanghaibio.com China 5876 58
Hebei Chuanghai Biotechnology Co., Ltd 		+8615531151365 mina@chuanghaibio.com China 18138 58
Henan Fengda Chemical Co., Ltd 		+86-371-86557731 +86-13613820652 info@fdachem.com China 20250 58
Hebei Zhuanglai Chemical Trading Co.,Ltd 		+8613343047651 admin@zlchemi.com China 3692 58
Henan Tianfu Chemical Co.,Ltd. 		+86-0371-55170693 +86-19937530512 info@tianfuchem.com China 21631 55
Shanghai Zheyan Biotech Co., Ltd. 		18017610038 zheyansh@163.com CHINA 3619 58
career henan chemical co 		+86-0371-86658258 +8613203830695 sales@coreychem.com China 29863 58

View Lastest Price from alpha-Terpinene manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Alpha Terpinene pictures 2025-03-26 Alpha Terpinene
99-86-5
 US $180.00 / kg 1kg 99% 20ton Hebei Zhuanglai Chemical Trading Co.,Ltd
ALPHA-TERPINENE pictures 2025-03-21 ALPHA-TERPINENE
99-86-5
 US $0.00 / KG 1KG 99% 50000KG/month Hebei Mujin Biotechnology Co.,Ltd
ALPHA-TERPINENE pictures 2025-03-20 ALPHA-TERPINENE
99-86-5
 US $1.00 / kg 1kg 99% 10 mt Hebei Chuanghai Biotechnology Co., Ltd
  • Alpha Terpinene pictures
  • Alpha Terpinene
    99-86-5
  • US $180.00 / kg
  • 99%
  • Hebei Zhuanglai Chemical Trading Co.,Ltd
  • ALPHA-TERPINENE pictures
  • ALPHA-TERPINENE
    99-86-5
  • US $1.00 / kg
  • 99%
  • Hebei Chuanghai Biotechnology Co., Ltd
1-Isopropyl-4-methyl-cyclohexa-1,3-diene ALPHA-TERPINENE ALPHA TERPINENE P&F FCC TERPINEOL P&F FCC ALPHA-TERPINENE 89+% FCC alpha-Terpinene, tech., 90% α-terpinene,1-methyl-4-(1-methylethyl)-1,3-cyclohexadiene ALPHA-ANDGAMMA-TERPINENES PARA-MENTHA-1,3-DIENE 1,3-Cyclohexadiene,1-methy TERPINENE, A- 1-methyl-4-isopropyl-3-cyclohexadiene 1-Methyl-4-isopropylcyclohexadiene-1,3 3-Cyclohexadiene,1-methyl-4-(1-methylethyl)-1 4-isopropyl-1-methyl-1,3-cyclohexadiene alpha-Terpine 1-ISOPROPYL-4-METHYL-1,3-CYCLOHEXADIENE A-TERPINENE WITH GC ALPHA-TERPINENE, NATURAL 1-Isopropyl-4-methyl-1,3-cyclohexadiene, p-Mentha-1,3-diene 1-Methyl-4-isopropyl-3-c α-Terpinene,1-Isopropyl-4-methyl-1,3-cyclohexadiene, p-Mentha-1,3-diene alpha-Terpinene, tech., 90% 100ML alpha-Terpinene, tech., 90% 500ML α-Terpinene, tech., 90% 1-methyl-4-(1-methylethyl)-3-cyclohexadiene 1-Methyl-4-isopropyl-1,3-cyclohexadiene Alpha-terpinene, 90%,tech. alpha-Terpinene >=95.0% (GC) 1-methyl-4-propan-2-ylcyclohexa-1,3-diene alpha-Terpinene 99-86-5 alpha-Terpinene solution α-Terpinene(Terpilene,alpha-Terpinene,|á-Terpinen) α-Terpinene> alpha-Terpinene@100 μg/mL in Methanol ALPHA-TERPINENE ISO 9001：2015 REACH α-Terpinene (~90%) 1,3-Cyclohexadiene, 1-methyl-4-isopropyl- 1,3-p-menthadiene ALPHA-TERPINEN FEMA 3558 A-TERPINENE 1,3-Cyclohexadiene, 1-methyl-4-(1-methylethyl)- TERPINENE ALPHA P-MENTHA-1,3-DIENE Terpilene α-Terpinene ,90% 1-methyl-4-(1-methylethyl)-1,3-cyclohexadiene Phenyl Acetate Impurity 39 alpha-Terpinene 1000 μg/ml Methanol C17322320 alpha-Terpinene alpha-Terpinene in Acetonitrile α-Terpinene, 10 mM in DMSO 99-86-5 Cyclic Organic Building Blocks Alkenes Building Blocks