Answer: bromine

AnswerCrossword Clue
BROMINE

Reddish-brown liquid element

BROMINE

Fire retardant chemical

BROMINE

One of the halogens

BROMINE
Liquid at room temperature
BROMINE
Toxic liquid
BROMINEElement from sea water
BROMINENo. 35 on the periodic table
BROMINEElement that's liquid at room temperature
BROMINEElement used in fire retardants