Aluminum sulfide, also known as aluminum disulfide, is a kind ofinorganic compound, chemical formula is AltwoSthree, molecular weight 150.16.It is white acicular crystal under normal temperature and pressure and can be hydrolyzed in hot waterAluminium hydroxideSedimentation andhydrogen sulfideHydrolysis can also occur slowly in humid air, so there is hydrogen sulfide smell.This product is often yellow gray dense powder mixed with impurities.This product is made by directly mixing and heating sulfur and aluminum.[1]
Character: yellow hexagonal crystal system, with rotten egg smell.[1]
Material structure data
1. Single isotope mass: 149.879286 Da
2. Nominal mass: 150 Da
3. Average mass: 150.1581 Da
chemical property
When encountering water or moisture, hydrogen sulfide and whiteAluminium hydroxide。
It can be reduced to aluminum by iron under heating:[2]
Preparation method
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Generally, aluminum andsulfurPowder mixing and heating to produce aluminum sulfide:
Or put aluminum chips in the quartz tube in the hydrogen sulfide gas flow, heat them at 600-630 ℃ for 5 hours, and then maintain the high temperature of 1000 ℃ for 12 hours. The purity obtained by this method is very high.[2]
Calculate chemical data
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1. Reference value for drainage parameter calculation (XlogP): None
11. Determine the number of atomic structure centers: 0
12. Number of uncertain atomic structure centers: 0
13. Determine the number of chemical bond structural centers: 0
14. Number of indeterminate chemical bond structure centers: 0
15. Number of covalent bond units: 5[1]
Molecular structure data
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1. Molar refractive index: None available
2. Molar volume (cmthree/Mol): None available
3. Isotonic specific volume (90.2K): none available
4. Surface tension (dyne/cm): none available
5. Dielectric constant: None available
6. Polarization (10-24cmthree）: No available
7. Single isotope mass: 149.879286 Da
8. Nominal mass: 150 Da
9. Average mass: 150.1581 Da[2]
Safety measures
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Hazard Overview
Health hazard: it has certain irritation to eyes and mucous membranes.A large amount of aluminum sulfide taken by mistake may cause irritation to the mouth and stomach.
Flammability hazard: This product is incombustible and irritant.
First aid measures
Skin contact: Take off contaminated clothes and wash with flowing water.
Eye contact: lift the eyelid, use flowing water ornormal salineFlush and seek medical advice.
Inhalation: leave the site to fresh air.asdyspnea, give oxygen and seek medical advice.
Ingestion: drink enough warm water, induce vomiting, and seek medical advice.[2]
Fire fighting measures
Hazard characteristics: no special combustion and explosion characteristics.Toxic sulfide fume is generated due to high thermal decomposition.
Extinguishing method: firefighters must wear full body fire and gas protective clothing and extinguish the fire upwind.When putting out a fire, try to move the container from the fire site to an open place.
Leakage treatment
Isolate the leakage contaminated area and restrict access.It is recommended that emergency handling personnel wearDust mask(Full face mask), wear anti-virus clothing.Collect with a clean shovel in a dry, clean, covered container and transfer to a safe place.In case of large leakage, collect and recycle or transport to waste disposal site for disposal.[2]
Handling and storage
Operation precautions: closed operation, local exhaust.Operators must be specially trained and strictly abide by the operating procedures.Recommended for operatorsSelf suction filtering dust maskWear chemical safety goggles, anti poison penetration work clothes and rubber gloves.Avoid dust generation.Avoid contact with oxidants.Handle with care to prevent package damage.Provide leakage emergency treatment equipment.Empty containers may leave harmful substances.Precautions for storage: store in a cool and ventilated warehouse.Keep away from kindling and heat sources.It shall be stored separately from oxidant and shall not be mixed.The storage area shall be equipped with appropriate materials to contain leakage.
