Simplify the following text for a Grade 10 native English-speaking person.
Original: Thallium ( I ) chloride , like all thallium compounds , is highly toxic , although its insolubility limits its toxicity to a degree .
Simplified: Thallium ( I ) chloride is made by reacting any soluble chloride such as hydrochloric acid with thallium ( I ) sulfate . This makes a thallium ( I ) chloride solid .