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Calcium hydride and its precautions

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What is Calcium Hydride? Calcium hydride CaH2 is an organic substance that has a molecular formula of 42.10. These crystals are grayish-white and easily deliquescent. They can be used as reducing agent, desiccants or chemical analysis reagents. Also known as a colorless orthorhombic crystal, industrial products can be gray, powdered or orthorhombic. It is sensitive to moisture. It doesn’t react with nitrogen or chlorine in the air at room temperatures. However, at high temperature, it can generate calcium oxide, calcium chloride and calcium nitride. When it is in contact with water, it releases hydrogen and decomposes. It can also produce hydrogen and calcium oxide when it reacts with ethanol. The reduction effect of metal oxides on sodium hydride and lithium hydride is much stronger.
What is the danger of calcium hydride to human health?
Calcium hydride is irritating to the mucous tissues, upper respiratory system, skin and eyes. It can cause death after inhalation due to spasms, inflammation, swelling, chemical pneumonia, or pulmonary embolism of the larynx, bronchi, and bronchial tubes. Contact with it can cause burning, coughing, wheezing and laryngitis.
Protective measures against calcium hydride
Respiratory Protection: If you think you might be exposed to poisons or dust, wear a dust-proof respirator with an electric air filter. Wearing a self contained breathing apparatus is recommended when needed.
Eye protection: Protected with respiratory protection.
Body protection: Wear chemical protective clothing
Wear rubber gloves as a hand protection.
Other: Smoking at work is prohibited. Attention to personal hygiene.
What should I be doing if I accidentally get in contact with calcium hydroide?
Skin contact: Remove all contaminated clothing as soon as possible and rinse thoroughly with running water for atleast 15 minutes. Seek medical attention.
Eye contact: Remove the eyelid as soon as possible and thoroughly rinse with lots of water or normal salt for at least 15 min. Seek medical attention.
Inhalation – leave the scene immediately to get fresh air. Airways should be kept clear. Oxygen is recommended if breathing becomes difficult. If breathing stops, you should immediately start artificial respiration. Seek medical attention.
Ingestion: Rinse your mouth out with water if you accidentally consume milk or egg yolk. Seek medical attention.
What to do in the event of a calcium hydride spill?
Access to the contaminated area should be restricted. Remove the source of ignition. It is advised that emergency personnel wear acid-alkali proof overalls and self-contained breathing equipment. Do not touch the leakage. Use non-sparking, dust-free tools to collect the small amount. Place the container in a safe location. Leakage in large quantities: Cover the leakage with canvas and plastic sheet to reduce dispersion. Contact the relevant technical departments to determine the removal technique.

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