Why ammonia is not used as refrigerant?

Related questions

1. Is ammonia a gas at room temperature?
2. Does ammonia kill mold?
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4. Why is ammonia not an acid?
5. What does ammonium hydroxide do to hair?
6. Is ammonium safe for skin?
7. What is ammonia solution used for?
8. What happens when liquid ammonia is kept in open air and why?
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10. What is the disadvantage of ammonia using as a refrigerant?

Tags

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20. #contains
21. #water
22. #because
23. #costs