86473

α-Terpinene

≥95.0% (GC)

• Synonym(s): alpha-Terpinene, 1-Isopropyl-4-methyl-1,3-cyclohexadiene, p-Mentha-1,3-diene
• Empirical Formula (Hill Notation): C₁₀H₁₆
• CAS Number: 99-86-5
• Molecular Weight: 136.23
• Beilstein: 1853379
• EC Number: 202-795-1
• MDL number: MFCD00001534
• UNSPSC Code: 12352100
• PubChem Substance ID: 57653161
• NACRES: NA.22

Properties

• Assay: ≥95.0% (GC)
• form: liquid
• refractive index: n20/D 1.478 (lit.)
• bp: 173-175 °C (lit.)
• density: 0.837 g/mL at 25 °C (lit.)
• storage temp.: −20°C
• 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

Description

General description

α-Terpinene, a cyclic monoterpene commonly used as a fragrance compound, is found in various essential oils. It is responsible for the antioxidant activity of tea tree oil.

Application

α-Terpinene can be used as an organic reductant in the guaiacol deoxygenation to yield phenols using V₂O₅/Al₂O₃ catalyst.

Safety Information

• Pictograms: GHS02,GHS08,GHS07,GHS09
• Signal Word: Danger
• Hazard Statements: H226,H302,H304,H317,H319,H411
• Precautionary Statements: P210 - P273 - P280 - P301 + P310 - P303 + P361 + P353 - P331
• Hazard Classifications: Acute Tox. 4 Oral - Aquatic Chronic 2 - Asp. Tox. 1 - Eye Irrit. 2 - Flam. Liq. 3 - Skin Sens. 1B
• Storage Class Code: 3 - Flammable liquids
• WGK: WGK 2
• Flash Point(F): 122.0 °F - closed cup
• Flash Point(C): 50 °C - closed cup
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves