m-Terphenyl
m-Terphenyl
CAS: 92-06-8
Molecular Formula: C18H14
m-Terphenyl - Names and Identifiers
| Name | m-Terphenyl |
| Synonyms | 3-TERPHENYL m-Terphenyl 3-phenyldiphenyl 1,3-Diphenylbenzene m-Terphenyl,1,3-Diphenylbenzene |
| CAS | 92-06-8 |
| EINECS | 202-122-1 |
| InChI | InChI=1/C18H14/c1-3-8-15(9-4-1)17-12-7-13-18(14-17)16-10-5-2-6-11-16/h1-14H |
m-Terphenyl - Physico-chemical Properties
| Molecular Formula | C18H14 |
| Molar Mass | 230.3 |
| Density | 1,2 g/cm3 |
| Melting Point | 84-88 °C (lit.) |
| Boling Point | 379 °C (lit.) |
| Flash Point | 191°C |
| Water Solubility | 1.511mg/L(25 ºC) |
| Solubility | Soluble in ethanol, ether, acetic acid and benzene, insoluble in water |
| Appearance | Yellow solid (yellow needle crystal) |
| Color | White to Light yellow |
| Exposure Limit | NIOSH: IDLH 500 mg/m3; Ceiling 0.5 ppm(5 mg/m3) |
| BRN | 1864778 |
| Storage Condition | 2-8℃ |
| Refractive Index | 1.5681 (estimate) |
| MDL | MFCD00003059 |
m-Terphenyl - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R50 - Very Toxic to aquatic organisms |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S60 - This material and its container must be disposed of as hazardous waste. |
| UN IDs | UN 3077 9/PG 3 |
| WGK Germany | 2 |
| RTECS | WZ6470000 |
| TSCA | Yes |
| HS Code | 29029090 |
| Hazard Class | 9 |
| Packing Group | III |
m-Terphenyl - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Introduction | M-triphenyl compounds usually have excellent optical and optical properties, which have been widely used in the field of materials science, it is used to make conductive polymers, liquid crystal materials, heat storage and heat transfer materials, laser dyes and textile dye carriers. For example, nine Nitro three biphenyl (NONA) is a high temperature resistant explosive with good safety performance, heat resistance can reach more than 300 degrees Celsius, and can ensure 100% initiation at high temperature, which belongs to the aerospace special explosive. At the same time, some of the triple benzene compounds also have a certain biological activity, such as carbofuran (mulberfuran R), trifluorocol (Trifucol), Simonsinol such as natural products contain M-Terphenyl structural units. |
| preparation | add triethyl orthoformate (4.0mmol), acetophenone (1.0mmol) to a 25ml two-necked flask under nitrogen protection and THF(5ml). After stirring for 0.5H, trifluoromethanesulfonic acid (0.1mmol) was added to the above mixture. The reaction was continuously monitored by TLC, this was then extracted with dichloromethane (3 x 10ml). The extracted organic layer was dried over anhydrous sodium sulfate, concentrated by rotary evaporation under reduced pressure, and finally separated directly by silica gel column chromatography (using ethyl acetate-hexane as eluent) to obtain M-Terphenyl IIa as a white solid, yield 61%, Melting Point: 83-84 °c. |
| 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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