chlorohydrin
noun
chlo·ro·hy·drin ˌklȯr-ə-ˈhī-drən 
: any of various organic compounds derived from diols or polyhydroxy alcohols by substitution of chlorine for part of the hydroxyl groups
Word History
Etymology
International Scientific Vocabulary chlor- + hydr- + -in entry 1
First Known Use
circa 1890, in the meaning defined above