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W355801

Sigma-Aldrich

α-Terpinene

≥89%, FCC, FG

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Synonym(s):
1-Isopropyl-4-methyl-1,3-cyclohexadiene, p-Mentha-1,3-diene
Empirical Formula (Hill Notation):
C10H16
CAS Number:
Molecular Weight:
136.23
FEMA Number:
3558
Beilstein/REAXYS Number:
1853379
Council of Europe no.:
11023
MDL number:
PubChem Substance ID:
Flavis number:
1.019
NACRES:
NA.21

biological source

synthetic

Quality Level

grade

FG
Fragrance grade
Halal
Kosher

agency

follows IFRA guidelines
meets purity specifications of JECFA

reg. compliance

EU Regulation 1223/2009
EU Regulation 1334/2008 & 178/2002
FCC
FDA 21 CFR 172.515

assay

≥89%

refractive index

n20/D 1.478 (lit.)

bp

173-175 °C (lit.)

solubility

95% ethanol: soluble 1ml/2ml, clear, colorless

density

0.837 g/mL at 25 °C (lit.)

application(s)

flavors and fragrances

documentation

see Safety & Documentation for available documents

food allergen

no known allergens

fragrance allergen

terpineol (mixture of isomers), Alpha-terpinene

organoleptic

lemon; medicinal; citrus; woody

SMILES string

CC(C)C1=CC=C(C)CC1

InChI

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

InChI key

YHQGMYUVUMAZJR-UHFFFAOYSA-N

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1 of 4

This Item
W355901W30452286473
α-Terpinene ≥89%, FCC, FG

W355801

α-Terpinene

γ-Terpinene natural, 95%, FG

W355901

γ-Terpinene

(−)−α-Terpineol natural, ≥96%, FCC, FG

W304522

(−)−α-Terpineol

α-Terpinene ≥95.0% (GC)

86473

α-Terpinene

grade

FG, Halal, Kosher, Fragrance grade

grade

FG, Fragrance grade, Halal, Kosher, natural

grade

FG, Fragrance grade, Halal, Kosher, natural

grade

-

biological source

synthetic

biological source

-

biological source

-

biological source

-

fragrance allergen

terpineol (mixture of isomers), Alpha-terpinene

fragrance allergen

no known allergens

fragrance allergen

α-terpineol

fragrance allergen

-

food allergen

no known allergens

food allergen

no known allergens

food allergen

no known allergens

food allergen

-

assay

≥89%

assay

95%

assay

≥96%

assay

≥95.0% (GC)

General description

α-Terpinene (1-isopropyl-4-methyl-1,3-cyclohexadiene, TER) is a monoterpene found in various plant volatile oils. It is commonly employed as flavoring additive in foods and beverages, as fragrance in cosmetics, and as scent in household products. It is one of the major component of the essential oil of Melaleuca alternifolia.

Biochem/physiol Actions

Odor at 10%
Taste at 10 ppm

Other Notes

Natural occurrence: Celery, corriander, fennel, grapefruit, lemon, lime, orange and mandarin oils, nutmeg, oregano, black pepper and Scotch spearmint.

signalword

Danger

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Chronic 2 - Asp. Tox. 1 - Eye Irrit. 2 - Flam. Liq. 3 - Skin Sens. 1B

Storage Class

3 - Flammable liquids

wgk_germany

WGK 2

flash_point_f

122.0 °F - closed cup

flash_point_c

50 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter


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Competitive Formation of Endoperoxide and Hydroperoxide in the Reaction of Singlet Oxygen with α-Terpinene.
Matusch R and Schmidt G.
ChemInform, 22(39) (1991)
I B Araujo et al.
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 34(5), 477-482 (1996-05-01)
alpha-Terpinene (1-isopropyl-4-methyl-1,3-cyclohexadiene) (TER) is a monoterpene found in the essential oils of a large variety of useful plants. Despite the widespread use of plants and essential oils containing TER in folk medicine potions and cosmetics, and as a flavouring food
B Oliva et al.
Letters in applied microbiology, 37(2), 185-187 (2003-07-16)
The aim of this study was to analyse the antimycotic properties of Melaleuca alternifolia essential oil (tea tree oil, TTO) and its principal components and to compare them with the activity of 5-fluorocytosine and amphotericin B. The screening for the
M R Gomes-Carneiro et al.
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 43(2), 247-252 (2004-12-29)
This study was undertaken to investigate the genotoxicity of beta-myrcene, alpha-terpinene and (+) and (-)-alpha-pinene, monoterpenes found in a variety of plant volatile oils. beta-myrcene, alpha-terpinene and alpha-pinene as well as plant oils containing these hydrocarbon monoterpenes have been used
Mosciano, G.
Perfumer & Flavorist, 27, 71-71 (2002)

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