Hydrogen Chloride

CAS RN: 7647-01-0

Protective Equipment / Clothing

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).
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 AXBEK (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).
Workers should wear acid resistant protective clothing, incl hoods, eye & face protection, acid resistant hand & arm protection, & foot & leg protection ... Workers should wear resp protective equipment of self contained or canister type depending on concn. /Hydrochloric acid/
For entry into a situation where the spilled material and its characteristics are unknown ... a totally encapsulated chemical suit should be worn. /Hydrochloric acid/
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. /Hydrochloric acid/
Vendor recommendations concerning the protective qualities of materials are as follow: neoprene, nitrile, chlorinated polyethylene, and polyvinyl alcohol received A (highest) or B (good) ratings from three or more venders, Natural rubber and nitrile/polyvinyl chloride received A (highest) or B (good) ratings from less than three vendors, B (good) and C (fair) ratings, with B's predominating, from several vendors, Neoprene/styrene-butadiene rubber and polyurethane received B (good) and C (fair) ratings, with C's predominating, from several vendors, C (fair) or D (poor) ratings from less than three vendors.
Breakthrough times of chlorinated polyethylene are greater than one hour reported by (normally) two or more testers. There are some data suggesting breakthrough times of polycarbonate to be approximately an hour or more.
Breakthrough times of natural rubber, neoprene, nitrile, and polyvinyl chloride are greater than one hour reported by (normally) two or more testers. Breakthrough times of natural rubber and neoprene are greater than one hour reported by (normally) two or more testers. There are some data suggesting the breakthrough times of nitrile, polyvinyl chloride, Viton, and Saranex to be approximately an hour or more. /Hydrochloric acid, 30-70%/
Workshops in which hydrochloric acid is frequently handled should be equipped with emergency showers and eyewash equipment, etc. /Hydrochloric acid/
Wear appropriate personal protective clothing to prevent skin contact. /Hydrochloric acid solution/
Compressed gases may create low temperatures when they expand rapidly. Leaks and uses that allow rapid expansion may cause a frostbite hazard. Wear appropriate personal protective clothing to prevent the skin from becoming frozen. /Hydrogen chloride/
Wear appropriate eye protection to prevent eye contact with the liquid that could result in burns or tissue damage from frostbite. /Hydrogen chloride/
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. /Hydrochloric acid solution/
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 should 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.] /Hydrochloric acid solution/
Quick drench facilities and/or eyewash fountains should be provided within the immediate work area for emergency use where there is any possibility of exposure to liquids that are extremely cold or rapidly evaporating. /Hydrogen chloride/
Respirator Recommendations: Up to 50 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 = 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 = 25 Any powered, air-purifying respirator with cartridge(s) providing protection against the compound of concern. Substance reported to cause eye irritation or damage; may require eye protection.
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 acid gas canister./Any appropriate escape-type, self-contained breathing apparatus.
Avoid contact by leakage or otherwise with all common metal. PVA not recommended for gloves; eye protectors and rubberized clothing should be worn in spill area. Respiratory equipment may be necessary and should not be constructed of materials susceptible to rapid corrosion by acid. /Hydrochloric acid/
Personal Protection: Wear positive pressure self-contained breathing apparatus. Wear appropriate chemical protective clothing. /Hydrogen chloride, anhydrous; Hydrogen chloride, refrigerated liquid/
Personal Protection: Wear appropriate chemical protective gloves, boots and goggles. If contact with the material anticipated, wear appropriate chemical protective clothing. /Hydrochloric acid//
Compatible protective equipment construction materials include: Natural rubber, neoprene, nitrile rubber, nitrile rubber/polyvinyl chloride, chlorinated polyethylene, polyvinyl chloride. /Hydrochloric acid; Hydrogen chloride, anhydrous; Hydrogen chloride, refrigerated liquid/
Find more information on this substance at: PubChem, PubMed