PBBs are used as flame retardants of the brominated flame retardant group. Like aluminium hydroxide, solid magnesium hydroxide has smoke suppressing and flame retardant properties. Zinc borate is used as a flame retardant. Boric acid is used as a flame retardant. Triphenyl phosphate has been used widely as a flame retardant and plasticizer. Such species are of technological importance as flame retardant agents, and plasticizers. The container was fire retardant and accident resistant as it was made from forged metal. This resulted in contamination of cattle feed with PBB, a flame retardant. Pentaerythritol is used as a fire retardant, such as in plastics. Insulators must meet demanding physical properties beyond their thermal transfer retardant properties. None of the above need to be made of fire retardant material. Loose-fitting pajamas must be treated with a fire retardant. An all out aerial bombardment with air tankers dropping fire retardant failed. DAP can be used as a fire retardant. The aircraft are rated to carry up to of fire retardant or water.