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Zirconium Powder, Zr 

Release time :2015/11/17
Zirconium Powder, Zr


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Production process: Zirconium absorbs hydrogen at 400-800 ℃ and produces zirconium 

hydride through a series of phase transitions. Zirconium hydride is decomposed at high 

temperature. Generally, hydrogen can be dehydrogenated at 500under a vacuum of 

0.133 Pa, and hydrogen can be completely removed at 800-1000 ℃. Zirconium hydride 

is refined by high-energy ball grinding and dehydrogenated to form high-performance 

ultrafine zirconium powder under vacuum and high temperature.

State of storage and transportation: water seal zirconium powder (zirconium powder 

commonly used in detonator, is a flammable and explosive, during transportation and 

storage is general in the water seal) of zirconium powder drying methods: 1 under 

argon protection drying in a vacuum drying oven drying, 2 both mechanical pump 

pumping air into vacuum state, the temperature is best at about 55 degrees, etc. 

The temperature has dropped below 30 degrees.

Zirconium powder, metal zirconium powder

 

Instructions

Chinese name:

Zirconium powder, metal zirconium powder  

English name:

Zirconium powder;Zirconium metal powder 

molecular formula:

Zr  

molecular weight:

91.22  

CAS:

7440-67-7  

RTECS:

ZH7070000  

Dangerous Goods Code:

42005  




physicochemical property

appearance:

A glossy gray metal or gray amorphous powder. When burned, it emits white light to form zirconia.  

main application:

Used in nuclear industry and corrosion resistant alloy, flash light, fireworks, etc., also used as metallurgical deoxidizer, chemical reagent, etc.  

Melting point:

1852

boiling point:

4377

Relative density (water =1):

6.49 

Relative density (air =1):

melting heat:251.2J/g 



solubleness:

Insoluble in water, soluble in hot concentrated acid, hydrofluoric acid, aqua regia and concentrated sulfuric acid. 

stagnation temperature(℃):

minimum ignition energy:5mJ  

critical pressure(MPa):




Combustion explosion hazard



combustibility

inflammable  

Classification of fire risks for construction regulations

second  

flash(ing) point(℃):


autoignition temperature(℃):

Ignition temperature () : no data available

lower explosive limit(V%):

0.16(g/l)  

upper explosive limit(V%):

no data  

hazardous characteristics

Powder will cause combustion explosion when heated, exposed to open flame or exposed to oxidizer.  

Combustion (decomposition) product

zirconia  

stability

stabilization  

Taboo thing

Strong acid, oxygen, lead.  

· Polymeric crimes against

cannot appear  

method of extinguishing

Water, dry powder, sand.  

Packaging storage and transportation

· Risk category

Class 4.2 Spontaneous combustion articles 

packing mark for hazardous goods

nine  

categories of packing

Ⅱ  

Precautions for storage and transportation

To be on the safe side, it is often wetted and passivated with not less than 25% water during storage and transportation. Store in a cool, ventilated room. Keep away from fire and heat. Keep container sealed. Keep away from oxidants, acids and bases. Light unloading during handling to keep packing intact and prevent leakage. 

Toxic hazard

exposure limit

China MAC: 5mg/m3 Former Soviet Union MAC: No standard TLV-TWA: ACGIH 5mg[Zr] / m3 USATLVSTELACGIH 10mg[Zr]m3  

invasion route

Inhalation of eat  



health hazard

Zirconium poisoning has not been reported in industry.  

first-aid

skin exposure

Remove contaminated clothing and rinse with soap and running water.  

eye contact

Immediately open upper and lower eyelids and rinse with running water or normal saline. Go to a doctor.  

inhalation

Get away from the scene to the fresh air. Go to a doctor. 

ingestion

Drink enough warm water, induce vomiting, seek medical advice.  

safeguard procedures

engineering control

Generally do not need special protection, but need to prevent smoke hazards.  

· Respiratory protection

When the concentration of dust in the air exceeds the standard, it is recommended to wear a self-suction filter respirator.  

eye protection

When the concentration of dust in the air exceeds the standard, wear chemical safety protective glasses.  

protection suit

Wear general operating protective clothing.

Hand protection

Wear chemical-proof gloves  

Other


· Spill Response

Cut off the fire. Wear masks and gloves. Collect and recycle.  


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