| HHM H28-- Diphenyl ether |
 | HHM H28 (diphenyl ether) is a colorless crystal or liquid. There is a smell of bamboo and sunflower. It is soluble in ethanol, benzene, ether and glacial acetic acid, but insoluble in water. The relative density (d20) is 1.075 . Melting point 28 ℃. Boiling point is 259 ℃. The flash point is 115 ℃. Low toxicity, LD50 (rat, oral) 3370mg/kg . It is irritating. Used for constant temperature heat transfer medium. Gas chromatographic stationary solution (maximum use temperature 100 ℃, solvent is acetone). Soap. Organic Synthesis.
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Upstream: phenol, chlorobenzene Downstream: decabromodiphenyl ether, biphenyl - diphenyl ether thermal oil, flavors and fragrances, other organic compounds
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| HHM H28 Diphenyl ether product physical and chemical data |
| Exterior | Colorless crystal or liquid, with the smell of Celosia. |
| Component | Diphenyl ether |
| English name | DIPHENYL OXIDE |
| CAS NO. | 101-84-8 |
| HS NO. | 2909309090 |
| Molecular formula | C12H10O |
| Molecular weight | 170.22 |
| Moisture PPM ( mg/Kg ) | ≤3 00 |
| Flash point / ℃ | 115 |
| Melting point/℃ | 28 |
| Boiling point/℃ | 257 |
| Relative density (water = 1) | 1.07(20 ℃ ) |
| Solubility | It is soluble in ethanol, ether, benzene and glacial acetic acid, but insoluble in water, inorganic acid solution and alkali solution. |
| Packing | Solid 200kg/galvanized iron drum |  |
| Liquid ISO TANK | 
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| Note: The above data is based on national and corporate standards. If you need specific information about a certain batch, please contact the sales directly or email to hennychem@hotmail.com to obtain it. |
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| Application of HHM H28 Diphenyl Ether |
| 1. Mainly used as one of the components of organic high temperature heating medium. |
| The mixture prepared from diphenyl ether and biphenyl in a mass ratio of 73.5 : 26.5 is called Daosheng A , which is also called biphenyl - diphenyl ether thermal oil. Temperature range: Gas 232-399 deg.] C, liquid 21-399 deg.] C, the operating temperature no greater than 400 deg.] C. The mixture composed of diphenyl ether and methyl biphenyl is called LF . It has a low freezing point and can be used at -30 ℃. It is a low-temperature, low-viscosity heating medium. |
| 2. Used in the production of flavors and fragrances. |
| Diphenyl ether has the scent of bayberry and crabapple, and also has the fragrance of sweet orange and daffodil. It is called crystalline geraniol oil or artificial geraniol oil in the perfume industry. Because diphenyl ether is relatively stable to alkali, it is mostly used in the preparation of soap flavors, and it is also commonly used as a substitute for geraniol oil, which is suitable for preparing floral makeup cosmetics, deodorants, etc. GB 2760-1996 stipulates that it is temporarily allowed to use edible spices. GB 2760-2001 stipulates as citrus preservative. When used with diphenylmethane, the fragrance can be lighter. It can be used in soaps, detergents, rose, bay leaf, hyacinth, fragrant weeds, new mowing, sandalwood and other fragrances used in soaps, detergents, and daily industrial products to give greenness. It can also be used to prepare artificial geraniol oil. |
| 3. Used in the production of flame retardant decabromodiphenyl ether. |
| 4. Used in synthetic resin and other organic synthesis production. |
| The production method of HHM H28 diphenyl ether |
It is obtained by condensation of chlorobenzene and phenol in caustic alkali solution with copper as a catalyst. Potassium hydroxide, phenol, and chlorobenzene are mixed at a molar ratio of 1 : 1.4 : 1.06 , add copper powder, stir and heat for condensation reaction. After the reaction, it is treated with acid to separate the diphenyl ether oil layer, and diphenyl ether finished product is obtained by distillation under reduced pressure. It is also possible to react chlorobenzene and phenol in sodium hydroxide solution. Another industrial source of diphenyl ether is as a by-product of the hydrolysis of chlorobenzene to phenol. In the process of hydrolysis of chlorobenzene with sodium hydroxide, about 10% of the chlorobenzene is converted into diphenyl ether. In some processes, this ratio can reach 20% . Diphenyl ether products can be obtained through extraction and refining.
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| HHM H28 diphenyl ether storage and transportation method |
1. Operation precautions: airtight operation, full ventilation. Operators must undergo special training and strictly abide by operating procedures. It is recommended that operators wear self-priming filter dust masks, chemical safety glasses, and chemical-proof gloves. Keep away from fire and heat sources, and smoking is strictly prohibited in the workplace. Use explosion-proof ventilation systems and equipment. Prevent smoke or dust from leaking into the workplace air. Avoid contact with oxidants. When handling, load and unload with care to prevent damage to packaging and containers. Equipped with corresponding types and quantities of fire-fighting equipment and leakage emergency treatment equipment. Empty containers may be harmful residues.
2. Storage precautions: Store in a cool, ventilated warehouse. Keep away from fire and heat sources. should be kept away from oxidizer, do not store together. Equipped with the appropriate variety and quantity of fire equipment. The storage area should be equipped with leakage emergency treatment equipment and suitable storage materials. |
| Overview of the dangers of HHM H28 diphenyl ether |
[Health Hazards] Except for the unpleasant smell, there is no obvious harm to people, but the unpleasant smell makes people feel sick. Long-term exposure can cause dermatitis.
【Explosion hazard】This product is combustible. |
| First aid measures for HHM H28 diphenyl ether |
[Skin contact] Take off contaminated clothing and rinse with plenty of running water.
[Eye contact] Lift the eyelids and rinse with running water or saline. Seek medical attention.
[Inhalation] Quickly leave the scene to a place with fresh air.
【Ingestion】Drink enough warm water to induce vomiting. Seek medical attention. |
| Fire protection measures for HHM H28 diphenyl ether |
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[Hazard characteristics] It is combustible in case of open flame and high heat. In case of high heat, the internal pressure of the container will increase and there is a danger of cracking and explosion.
【Hazardous combustion products】Carbon monoxide and carbon dioxide.
[Fire fighting methods] Move the container from the fire scene to an open place as much as possible. Spray water to keep the fire container cool until the end of the fire. If the container in the fire scene has changed color or produces sound from the safety relief device, it must be evacuated immediately.
【Extinguishing agent】Mist water, foam, dry powder, carbon dioxide, sandy soil. |
Emergency treatment of HHM H28 diphenyl ether leakage
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[Emergency treatment] Quickly evacuate personnel from the contaminated area to a safe area, isolate them, and strictly restrict access. Cut off the fire source. It is recommended that emergency personnel wear self-priming filter gas masks (full face masks) and general work clothes. Cut off the source of leakage as much as possible. If it is liquid, prevent it from flowing into restricted spaces such as sewers and flood drains.
[Small leakage] Use sand or other non-combustible materials to absorb or absorb. It can also be scrubbed with an emulsion made of incombustible dispersant, and the lotion is diluted and put into the waste water system.
[Large leakage] Construct a dike or dig a pit for storage. Use a pump to transfer to a tanker or a special collector for recycling or transport to a waste disposal site for disposal. If it is solid, collect it in a dry, clean, covered container with a clean shovel. If there is a large amount of leakage, collect it for recycling or transport it to a waste disposal site for disposal. |