α-Terpinene
α-Terpinene
CAS: 99-86-5
Molecular Formula: C10H16
α-Terpinene - Names and Identifiers
α-Terpinene - Physico-chemical Properties
| Molecular Formula | C10H16 |
| Molar Mass | 136.23 |
| Density | 0.837g/mLat 25°C(lit.) |
| Melting Point | -59.03°C (estimate) |
| Boling Point | 173-175°C(lit.) |
| Specific Rotation(α) | n20/D 1.478 (lit.) |
| Flash Point | 115°F |
| JECFA Number | 1339 |
| Water Solubility | Soluble in ether, alcohol, and ethanol (100 mg/ml). Insoluble in water. |
| Solubility | It is miscible with ethanol and ether, and is almost insoluble in water. |
| Vapor Presure | 2.22hPa at 25℃ |
| Appearance | Colorless oily liquid |
| Specific Gravity | 0.84 |
| Color | Clear colorless to light yellow |
| Merck | 14,9170 |
| BRN | 1853379 |
| Storage Condition | 2-8°C |
| Refractive Index | n20/D 1.478(lit.) |
| MDL | MFCD00001534 |
| Physical and Chemical Properties | Colorless liquid with citrus and lemon-like aromas. Boiling point 173 ℃, soluble in ethanol and most non-volatile oils, insoluble in water. Natural products exist in cardamom oil, sweet oregano oil, coriander seed oil, etc. |
α-Terpinene - Risk and Safety
| Risk Codes | R10 - Flammable R22 - Harmful if swallowed R36/37/38 - Irritating to eyes, respiratory system and skin. R51/53 - Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37 - Wear suitable protective clothing and gloves. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S62 - If swallowed, do not induce vomitting; seek medical advice immediately and show this container or label. S36 - Wear suitable protective clothing. |
| UN IDs | UN 2319 3/PG 3 |
| WGK Germany | 2 |
| RTECS | OS8060000 |
| FLUKA BRAND F CODES | 10-23 |
| TSCA | Yes |
| HS Code | 29021990 |
| Hazard Class | 3.2 |
| Packing Group | III |
| 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). |
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