Hydrogen fluoride

Workers should wear long rubber gauntlets, long rubber aprons, high rubber boots, & wide plastic face shield while handling hydrogen fluoride. Forced-air face masks should be worn if air concn ... is sufficiently high to cause nasal irritation.

There are some data (usually from immersion tests) suggesting breakthrough times of butyl rubber that are greater than one hour are not likely. There are some data suggesting the breakthrough times of polycarbonate to be approximately an hour or more.

There are some data sugesting the breakthrough times of neoprene, natural rubber, and nitrile to be approximately an hour or more. There are some data (usually from imersion tests) suggesting that the breakthrough times of polyvinyl chloride greater than one hour are not likely. /Hydrofluoric acid, 30-70%/

Wear appropriate personal protective clothing to prevent skin contact. /Liquid/

Wear appropriate eye protection to prevent eye contact. /Liquid/

Eyewash fountains should be provided in areas where there is any possibility that workers could be exposed to the substance; this is irrespective of the recommendation involving the wearing of eye protection. /Liquid/

Facilities for quickly drenching the body should be provided within the immediate work area for emergency use where there is a possibility of exposure. [Note: It is intended that these facilities provide a sufficient quantity or flow of water to quickly remove the substance from any body areas likely to be exposed. The actual determination of what constitutes an adequate quick drench facility depends on the specific circumstances. In certain instances, a deluge shower should be readily available, whereas in others, the availability of water from a sink or hose could be considered adequate.] /Liquid/

Respirator Recommendations: Up to 30 ppm:

Assigned Protection Factor (APF)	Respirator Recommendations
APF = 10	Any chemical cartridge respirator with cartridge(s) providing protection against the compound of concern. Substance reported to cause eye irritation or damage; may require eye protection.
APF = 25	Any powered, air-purifying respriator with cartridge(s) providing protection against the compound of concern. Substance reported to cause eye irritation or damage; may require eye protection.
APF = 50	Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted canister providing protection against the compound of concern.
APF = 10	Any supplied-air respirator. Substance reported to cause eye irritation or damage; may require eye protection.
APF = 50	Any self-contained breathing apparatus with a full facepiece.

Respirator Recommendations: Emergency or planned entry into unknown concentrations or IDLH conditions:

Assigned Protection Factor (APF)	Respirator Recommendations
APF = 10,000	Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode.
APF = 10,000	Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus.

Respirator Recommendations: Escape:

Assigned Protection Factor (APF)	Respirator Recommendations
APF = 50	Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted canister providing protection against the compound of concern./Any appropriate escape-type, self-contained breathing apparatus.

SRP: When working with strong solutions of acids or bases or other caustic or corrosive materials, always wear a full face mask. When working with caustic or corrosive gases or vapors, a full face mask will not protect the eyes or prevent inhaling the material. A full face respirator is required.

Eye/face protection: Tightly fitting safety goggles. Faceshield (8-inch minimum). Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU).

Skin protection: Handle with gloves.

Body Protection: Complete suit protecting against chemicals. The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace.

Respiratory protection: Where risk assessment shows air-purifying respirators are appropriate use a full-face respirator with multipurpose combination (US) or type ABEK (EN 14387) respirator cartridges as a backup to engineering controls. If the respirator is the sole means of protection, use a full-face supplied air respirator. Use respirators and components tested and approved under appropriate government standards such as NIOSH (US) or CEN (EU).