119-64-2
1,2,3,4-Tetrahydronaphthalene
CAS: 119-64-2
Molecular Formula: C10H12
119-64-2 - Names and Identifiers
| Name | 1,2,3,4-Tetrahydronaphthalene |
| Synonyms | THN TETRALIN Tetralin TETRANAP TETRALINE TETRALIN(R) tetralin solvent 1,2,3,4-tetrahydronaphthalin 1,2,3,4-Tetrahydronaphthalene 1,2,3,4-tetrahydro-naphthalen 1,2,3,4-Tetrahydronaphythalene |
| CAS | 119-64-2 |
| EINECS | 204-340-2 |
| InChI | InChI=1/C10H12/c1-2-6-10-8-4-3-7-9(10)5-1/h1-2,5-6H,3-4,7-8H2 |
119-64-2 - Physico-chemical Properties
| Molecular Formula | C10H12 |
| Molar Mass | 132.2 |
| Density | 0.973 g/mL at 25 °C (lit.) |
| Melting Point | -35 °C (lit.) |
| Boling Point | 207 °C (lit.) |
| Flash Point | 171°F |
| Water Solubility | INSOLUBLE |
| Solubility | 0.045g/l |
| Vapor Presure | 0.18 mm Hg ( 20 °C) |
| Vapor Density | 4.55 (vs air) |
| Appearance | Fluid |
| Color | Colorless |
| Merck | 14,9221 |
| BRN | 1446407 |
| Storage Condition | Store below +30°C. |
| Stability | Stable. Combustible. Incompatible with strong oxidizing agents. |
| Sensitive | Air Sensitive |
| Explosive Limit | 0.8%, 100°F |
| Refractive Index | n20/D 1.541(lit.) |
| Physical and Chemical Properties | This product is a colorless liquid, has a stimulating odor, M. P.-35 ℃, B. p.207 ℃,n20D 1.5410, relative density 0.9730,f. P. 77 ℃, insoluble in water, soluble in ethanol, ether, acetone, acetic acid, benzene and petroleum ether. |
| Use | Used as solvent and chromatographic analysis reagent |
119-64-2 - Risk and Safety
| Risk Codes | R19 - May form explosive peroxides R36/38 - Irritating to eyes and skin. R51/53 - Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R65 - Harmful: May cause lung damage if swallowed R40 - Limited evidence of a carcinogenic effect |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S28 - After contact with skin, wash immediately with plenty of soap-suds. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S28A - S62 - If swallowed, do not induce vomitting; seek medical advice immediately and show this container or label. S36/37 - Wear suitable protective clothing and gloves. |
| UN IDs | UN 3082 9/PG 3 |
| WGK Germany | 2 |
| RTECS | QK3850000 |
| TSCA | Yes |
| HS Code | 2902 90 00 |
| Hazard Class | 9 |
| Packing Group | III |
| Toxicity | LD50 orally in rats: 2.86 g/kg (Smyth) |
119-64-2 - Nature
Open Data Verified Data
colorless liquid with irritating odor. Melting Point -36 °c. Boiling point 206~207 deg C. Relative density 0.971, 0.9659. Refractive index 54614. The vapor pressure was 133 at 38 °c. Its vapor is 3.6 times heavier than air. Specific heat capacity 1. 69J/(g. °C)(18 °c). The heat of vaporization was 331 J/g. The heat of combustion was 5660 kJ/mol. Insoluble in water, soluble in ethanol, ether, acetone, acetic acid, benzene and petroleum ether. Flash point (closed) 71.2 °c. The explosion limit in air is 0. 8~6 ~ s%(volume).
Last Update：2024-01-02 23:10:35
119-64-2 - Preparation Method
Open Data Verified Data
prepared from the selective hydrogenation of naphthalene over a nickel catalyst. Nickel molybdate was used as catalyst for gas phase catalytic reaction in an adiabatic reactor at a pressure of 2. 94MPA and a reaction temperature of 300 ℃. Feed space velocity was 0.8 h. The ratio of hydrogen to naphthalene is 2500 to 6400 by volume, the conversion rate of naphthalene per pass is 85%, and the selectivity is above 92%. The purity of tetrahydronaphthalene is more than 98% after distillation by gas stripping.
Last Update：2022-01-01 10:40:00
119-64-2 - Use
Open Data Verified Data
A large number of used in the manufacture of insecticide carbaryl intermediate cresol; Also used in the manufacture of lubricants, and used to reduce the viscosity of high viscosity oil, and widely used as organic (resin, wax, grease, paint, plastic, etc.) of the solvent. It can also be used in the gas industry to dissolve, remove naphthalene deposition in the equipment, and as a liquid for washing gas. It is mixed with alcohol and benzene as a fuel for internal combustion engines. In addition, it can be used as a degreasing agent, a softener, an absorbent of low boiling point organic compound vapor, an insect repellent and a substitute for turpentine.
Last Update：2022-01-01 10:39:59
119-64-2 - Safety
Open Data Verified Data
- little toxicity, there is a certain anesthetic effect, can cause Head Pain, discomfort and skin eczema. Mouse oral LD50 2900mg/kg. The allowable concentration in air was 0.05 mg/kg. Tetrahydronaphthalene and air contact for a long time can generate hydrogen peroxide tetrahydronaphthalene caused an explosion, the use of must wear goggles, gas masks and rubber gloves.
- tetrahydronaphthalene is a third-grade flammable liquid with fire hazard. Must be stored in a cool, ventilated place, away from the heat source, fire, and oxidant stored separately, light light discharge, keep the package intact.
Last Update：2022-01-01 10:40:01
119-64-2 - Reference Information
| olfactory Threshold | 0.0093ppm |
| LogP | 3.78 at 23℃ |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Application | 1,2,3, 4-tetrahydronaphthalene is an important intermediate for the preparation of cresol, which can be used to synthesize, diphenoxylamine and other pesticides. used as solvent and chromatographic analysis reagent manganese was examined. Degreasing agent. Intermediates. Solvents for naphthalene, oils and resins |
| production method | the preparation method is to use naphthalene as raw material, in the presence of nickel molybdate catalyst, pressure 2.9 MPa, the temperature was 300 ° C., The hydrogenation reaction was carried out in an adiabatic reaction apparatus, and the obtained crude product was subjected to rectification to obtain a product. |
| category | flammable liquid |
| toxicity grade | poisoning |
| Acute toxicity | oral-rat LD50: 1571 mg/kg |
| stimulation data | Skin-rabbit 500 mg severe; eye-rabbit 500 mg/24 h mild |
| explosive hazard characteristics | explosive when mixed with air; explosive peroxide generated by long-term contact with air |
| flammability hazard characteristics | flammability; Combustion stimulus smoke |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; Add antioxidants such as hydroquinone |
| extinguishing agent | dry powder, foam, sand, water |
| spontaneous combustion temperature | 723 ° F. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
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