HazMat Chemical Spill Absorbent Pillows Yellow HazMat Pillows for Chemical, Acids, Bases and Unknown Liquids Toss on contained liquid. Easy to deploy — quick to absorb. The HazMat Pillow’s large surface area and sizeable amount of sorbent filler enables you to attack spills with speed and efficiency. Color-Coded All HazMat Sorbents are color-coded in Safety Yellow for quick identification. Helps you comply with 29 CFR 1910.120(j)(1), 29 CFR 1910.1450(e) and 40 CFR 263.31.