(l)-alpha-terpineol
Alpha-Terpineol, mixture of Alpha- and Gamma-terpineol
CAS: 10482-56-1;8000-41-7
Molecular Formula: C10H18O
(l)-alpha-terpineol - Names and Identifiers
(l)-alpha-terpineol - Physico-chemical Properties
| Molecular Formula | C10H18O |
| Molar Mass | 154.25 |
| Density | 0.93g/mLat 25°C(lit.) |
| Melting Point | 31-35°C(lit.) |
| Boling Point | 217-218°C(lit.) |
| Specific Rotation(α) | -100.5 |
| Flash Point | 193°F |
| Water Solubility | 2.23g/L at 20℃ |
| Solubility | 1 part terpineol can be dissolved in 2 parts (volume) of 70% ethanol solution, slightly soluble in water and glycerol |
| Vapor Presure | 2.79Pa at 20℃ |
| Appearance | Colorless liquid |
| Specific Gravity | 0.934 (20/4℃) |
| Color | Colourless to Off-White Oil to Low-Melting |
| BRN | 2325137 |
| pKa | 15.09±0.29(Predicted) |
| Storage Condition | Store below +30°C. |
| Sensitive | Easily absorbing moisture |
| Refractive Index | n20/D 1.482(lit.) |
| MDL | MFCD00075926 |
| Physical and Chemical Properties | Characteristics of colorless liquid or low melting point transparent crystal, with clove flavor. freezing point 2 ℃ relative density 0.9337 refractive index 1.4825~1.4850 solubility 1 part terpineol can be dissolved in 2 parts (by volume) of 70% ethanol solution, slightly soluble in water and glycerol. |
| Use | For the preparation of essence, advanced solvents and deodorants |
(l)-alpha-terpineol - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. |
| UN IDs | UN1230 - class 3 - PG 2 - Methanol, solution |
| WGK Germany | 2 |
| RTECS | WZ6700000 |
| HS Code | 2906 19 00 |
| Toxicity | LD50 orally in Rabbit: 4300 mg/kg LD50 dermal Rat > 5000 mg/kg |
(l)-alpha-terpineol - Upstream Downstream Industry
| Raw Materials | Oil of turpentine Oil of turpentine |
| Downstream Products | dihydroterpineol (+|-)-alpha-terpinyl acetate |
(l)-alpha-terpineol - Nature
Open Data Verified Data
colorless liquid or low melting point transparent crystal, with clove flavor, flammable. Commercially available is a mixture of three isomers with a relative density (d20) of 9337. The curing point was 2 °c. Optical rotation [a]-0. lOf ~ +0. 10 7. The boiling range was 214-224 °c. Refractive index) 1. 4825 to 1. 4850. l parts of terpineol can be dissolved in 2 parts (volume) of 70% ethanol solution, slightly soluble in water and glycerol.
Last Update：2025-06-10 22:55:16
(l)-alpha-terpineol - Preparation Method
Open Data Verified Data
turpentine in sulfuric acid solution, add a small amount of emulsifier flat, hydration reaction at room temperature, so that the main component of turpentine pinene hydration terpene diol, this intermediate after dehydration of crude terpineol, after fractionation and refining, the product was refined.
Last Update：2022-01-01 10:34:35
(l)-alpha-terpineol - Application
Open Data Verified Data
Terpineol has clove aroma, and its formate and acetate can be used in the preparation of flavor, and also used in medicine, pesticide, plastic, soap, ink, instrument and telecommunication industry, it is also an excellent solvent for color on glassware.
Last Update：2025-08-19 16:24:40
(l)-alpha-terpineol - Safety
Open Data Verified Data
non-toxic. The use of galvanized iron drum packaging, a barrel of 17 5kg. Store in a cool, ventilated, dry place. Protection against heat, moisture and sun. According to the general rules of storage and transportation of chemicals.
Last Update：2022-01-01 10:34:35
(l)-alpha-terpineol - Reference Information
| FEMA | 3045 | ALPHA-TERPINEOL |
| LogP | 2.25 at 20℃ |
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | is widely used in flavor formulas for various purposes, and is also used as an agent to increase freshness. As a body fragrance, it is often used in lily, lilac, lily of the valley and other flavors. It is also an important spice in magnolia, gardenia, narcissus, apple blossom, fragrant Wei and pine needle flavor. It is the main component in many soap, daily chemical products and disinfectant flavors. Pure products (mainly nail body) can be used as edible essence. the main agent of lilac flavor, strong alkali resistance, suitable for soap essence, its acetate has citron and lavender aroma, used for the preparation of essence. It is also used in medicine, pesticide, plastic, soap, ink, instrument and telecommunications industry. It is an excellent solvent for color on glassware. terpineol (Alpha-Terpineol) has lilac flavor. its formate and acetate can be used for essence preparation, advanced solvent and deodorant. It is also used in the medicine, pesticide, plastic, soap, and ink industries. It is also a solvent for colors on glassware. used to prepare essence, advanced solvent and deodorant used to blend soap, soap and cosmetic spices, can be used to blend essence of lilac, etc. used in pharmaceutical industry, also used as perfume, solvent and ink, etc. |
| production method | turpentine is treated with 23% dilute sulfuric acid to convert the main component α-pinene into terpene diol monohydrate. this intermediate is dehydrated to obtain crude terpene alcohol, which is then fractionated, refined and refined. Raw material consumption quota: turpentine 1730kg/t, sulfuric acid (98%)650kg/t, caustic soda 160kg/t. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 21:04:16
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Raw Materials for (l)-alpha-terpineol
Downstream Products for (l)-alpha-terpineol