六氟化硫

Sulfur hexluoride;

CAS no :2551-62-4

EINECS:219-854-2

molecular formula:SF6

molecular weight:146.06

density:6.602;1.88 (-50.8℃, liquid)

Melting point: -50.5

properties :colorless, tasteless, odorless, non-toxic inert non-combustion gas.

Slightly soluble in water, alcohol and ether, soluble in potassium hydroxide.

purpose: used in high voltage switch for arc extinguishing and large capacity transformer insulation material;It can also be used in particle accelerator and lightning arrester.It can be used as refrigerant in industry because of its chemical stability and non-corrosion to equipment.Also used in reflexes because of its high ability to stop alpha particles;It also ACTS as a reverse adsorbent to replace oxygen from mine coal.

Obtained by the direct combination of elemental fluorine and sulfur.

[note] a substance with good chemical stability, thermal stability is still very good above 500℃.Sublimation temperature -63.8℃.

[packaging and storage] cylinder

Purity : 99.999%  

Oxygen ≤1.0 ppmv

Nitrogen ≤4.0 ppmv

Carbon Dioxide ≤1.0ppmv

Carbon Monoxide ≤0.5 ppmv

Methane ≤0.5 ppmv

Water ≤2.0 ppmv

CF4 ≤1.0 ppmv

Other Halocarbons ≤2.0 ppmv

Acidity as HF ≤0.1 ppmw

Folding first aid measures

Inhalation: quickly get out of the scene to the fresh air. Keep the respiratory tract open. If breathing is difficult, give oxygen. If breathing stops, do artificial respiration immediately. Seek medical treatment.

Folding fire protection measures

Dangerous characteristics: in the event of high heat, the internal pressure of the vessel increases, there is a risk of cracking and explosion.

Hazardous combustion products:sulfur oxide and hydrogen fluoride.

Fire-extinguishing method: The product is non-combustible. Cut off the air supply. Spray water to cool the container and, if possible, move the container from the fire field to the open position.

Folding leakage emergency treatment

Emergency treatment: quickly evacuate the personnel of the leaking pollution area to the upper hand and conduct the isolation, and strictly limit the access. It is recommended that the emergency treatment personnel wear self-contained positive pressure breathing apparatus and wear general working clothes. Cut off the source of leakage as much as possible. Reasonable ventilation and accelerated diffusion. If possible, use it immediately. The air leakage container shall be properly handled, repaired and inspected for reuse.

Folding disposal and storage

Operating precautions:closed operation, local exhaust. Operators must be specially trained and strictly comply with the operating procedures. It is recommended that the operator wear a filter gas mask(half mask). Keep away from flammable and combustible materials. Prevent gas from leaking into the workplace air. Avoid contact with oxidant. Handle gently to prevent damage of steel cylinders and accessories. Equipped with leakage emergency handling equipment.

Storage precautions: Store in a cool and ventilated warehouse. Keep away from the fire and heat. The temperature of the reservoir should not exceed 30 ℃. It shall be stored separately from the combustible substance and the oxidizing agent, and the mixed storage shall be avoided. The storage area shall be provided with a leakage emergency treatment equipment.