98-55-5
p-menth-1-en-8-ol
CAS: 98-55-5;22347-88-2
Molecular Formula: C10H18O
98-55-5 - Names and Identifiers
98-55-5 - Physico-chemical Properties
| Molecular Formula | C10H18O |
| Molar Mass | 154.25 |
| Density | 0.93 g/mL at 25 °C (lit.) |
| Melting Point | 31-35 °C (lit.) |
| Boling Point | 217-218 °C (lit.) |
| Flash Point | 90 °C |
| JECFA Number | 366 |
| Water Solubility | negligible |
| Solubility | 0.71g/l |
| Vapor Presure | 6.48Pa at 23℃ |
| Appearance | Transparent colorless liquid |
| Specific Gravity | 0.9386 |
| Color | Clear colorless |
| Merck | 14,9171 |
| BRN | 2325137 |
| pKa | 15.09±0.29(Predicted) |
| Storage Condition | 2-8°C |
| Refractive Index | 1.482-1.485 |
| MDL | MFCD00001557 |
| Physical and Chemical Properties | Terpineol has three isomers: α,β, and γ. According to its melting point, it should be solid, but the synthetic products sold on the market are mostly liquid mixtures of these three isomers. α-terpineol has three types: right-handed, left-handed and racemic. D-α-terpineol naturally exists in cardamom oil, sweet orange oil, orange leaf oil, neroli oil, jasmine oil and nutmeg oil. L-α-terpineol naturally exists in pine needle oil, camphor oil, cinnamon leaf oil, lemon oil, white lemon oil and rose wood oil. β-terpineol has cis and trans isomers (rare in essential oils). γ-terpineol exists in the form of free or ester in cypress oil. The mixture of α-terpineol is used in spices. It is a colorless viscous liquid. It has a unique clove aroma. Boiling point 214~224 ℃, relative density d25250.930 ~ 0.936. Refractive index nD201.482 ~ 1.485. Insoluble in water, soluble in ethanol, propylene glycol and other organic solvents. Alpha-terpineol is found in leaves, flowers and grass stems of more than 150 plants. D-optically active body exists in essential oils such as cypress, cardamom, star anise, and orange blossom. L-optically active body exists in essential oils such as lavender, melaleuca, white lemon, cinnamon leaf, etc. Figure 2 shows the chemical structural formulas of the three isomers of terpineol α,β, and γ |
98-55-5 - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | R10 - Flammable R38 - Irritating to the skin R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S16 - Keep away from sources of ignition. S37 - Wear suitable gloves. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37/39 - Wear suitable gloves and eye/face protection |
| UN IDs | UN1230 - class 3 - PG 2 - Methanol, solution |
| WGK Germany | 1 |
| RTECS | WZ6700000 |
| TSCA | Yes |
| HS Code | 29061400 |
98-55-5 - Reference
| Reference Show more | 1. Ma Yanshi, Li, Yang, Zhao Yi, et al. Antennal potential and behavioral responses of cloud-spotted gastrodiae to volatile components of Carya cathayensis in different damaged states [J]. Journal of Zhejiang Agriculture and Forestry University 2019 36(03):12-18. 2. Ma Yan, Li Yang Shi, Yi Zhao, et al. GC-EAD and behavioral responses of volatile components in Carya cathayensis under different damage states [J]. Chinese Journal of Applied Entomology, 2019, 056(003):530-538. 3. Li, Aoxin, et al. "A strategy of rapid screening. Pest management science 76.3 (2020): 917-927. 4. [IF = 5.753] Yin Yan-Jiao et al."The Fight Against Panax notoginseng Root-Rot Disease Using Zingiberaceae Essential Oils as Potential Weapons."Front Plant Sci. 2018 Oct;0:1346 5. [IF=4.35] Yao Ma et al."Volatile Oil Profile of Prickly Ash (Zanthoxylum) Pericarps from Different Locations in China."Foods. 2021 Oct;10(10):2386 |
98-55-5 - Nature
Open Data Verified Data
colorless thick liquid with the aroma of clove flowers. Freezing point 37 deg C; Boiling point of 219 deg C. Soluble in ethanol, acetone, chloroform, ether and benzene and other organic solvents, insoluble in water.
Last Update：2024-01-02 23:10:35
98-55-5 - Preparation Method
Open Data Verified Data
It is prepared by condensation reaction of isoprene with butenone and then reaction with Grignard reagent; Or from pinene in turpentine oil under the action of 30% sulfuric acid to form hydrated terpene diol Crystal precipitate, after separation by dehydration, separation, distillation to obtain the finished product.
Last Update：2022-01-01 10:07:20
98-55-5 - Use
Open Data Verified Data
Terpineol is mainly used in lemon, orange, strawberry, peach and other fruit essence. In general, 14mg/kg in 38mg/kgI candy in 40mg/kgI seasoning in chewing gum; 19mg/kg in baked food; 16mg/kg in cold drinks; 12~16mg/kg in pudding; soft drinks in 5. 4 mg/kg.
Last Update：2022-01-01 10:07:20
98-55-5 - Reference Information
| FEMA | 3045 | ALPHA-TERPINEOL |
| LogP | 2.6 at 30℃ |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| biological activity | α-terpineol was isolated from Eucalyptus globule bill, it has strong antibacterial activity against periodontal disease and cariogenic bacteria. α-Terpineol has antifungal activity, T. Mentagrophtes, which may lead to irreversible cell division. |
| Use | a single pecienol. It is one of the antifungal active ingredients of the Essential Oil of Melaleuca alternifolia (Tea Tree). |
| production method | 1. Isoprene and butenone by condensation reaction, and then reaction with Grignard reagent; Or from the turpentine pinene in 30% sulfuric acid under the formation of hydrated terpene diol crystal precipitation, separation after dehydration, separation, distillation to obtain the finished product. 2. Separation and extraction from Long Leaf Pine. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 20:52:54
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