An employee hooked up a hose to unload sulfuric acid. After he hooked up the appropriate hose, he walked around the truck to make sure everything was in its proper place. He then came back and touched the hose to ensure that sulfuric acid was being transferred. When he touched the hose, it came off, and the sulfuric acid splashed all over him and contacted his neck. He sustained third degree burns to his neck and shoulder and second degree burns to his arm. He was wearing PPE at the time.