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hydroforming
hydrogasification
hydrogel
hydrogen
hydrogen bomb
hydrogen bond
hydrogen bromide
hydrogen carbonate
hydrogen chloride
hydrogen cyanide
hydrogen embrittlement
hydrogen fluoride
hydrogen iodide
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hydrogen chloride

hy·dro·gen chlo·ride


noun 
Definition:
 
corrosive gas: a colorless fuming corrosive gas. Source: byproduct of organic chlorination reactions. Use: manufacture of PVC. HCl

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