SODIUM HYPOCHLORITE (Bleach) Cap color is Yellow. Right-to-Know safety-vented wash bottles are OSHA compliant and pre-printed with the full color NFPA diamond and other important safety information. Unique, patented 2-piece valve prevents pressure build-up of solvents and eliminates dangerous drips. Valve also allows dispensing whether bottle is in an upright or inverted position. 53mm wide mouth for easy refilling, bottles are made of translucent LDPE (Low Density Polyethylene) and feature color polypropylene caps to enhance identification. Preprinted Bottles Include: Chemical Name and Formula, NFPA Diamond, Health Hazards, CAS # (Chemical Abstract Services), Suggested Protective Clothing and Equipment. Sodium Hypochlorite (Bleach) bottle is white LDPE for light-protection between 230 and 450nm. Bag of 4.