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IOM_WPHBA HE-WPHA HE_091a1201_207815_180701_EN
HORIZONTAL WATER-AIR COMPACT PACKAGED UNITS
WPHA HE / WPHBA HE
APPENDIX: SAFETY DATA R410A
REFRIGERANT DATA
SAFETY DATA: R410A
Toxicity
Low
Contact with Skin
R410 A vapours can irritate the skin and eyes. In liquid form, it can freeze skin on contact. If contact with
skin occurs, flush the exposed area with lukewarm water until all of the chemical is removed. If there is
evidence of frostbite, bathe in lukewarm water.
Contact with Eyes
If contact with eyes occurs, immediately flush with large amounts of lukewarm water for at least 15 minutes,
lifting eyelids occasionally to facilitate irrigation. Seek medical attention as soon as possible.
Ingestion
Very unlikely - should something happen, it will cause frost burns. Do not induce vomiting. Only if the
patient is conscious, wash out mouth with water and give some 250 ml of water to drink. Then, obtain
medical attention.
Inhalation
Inhalation of the R410A vapour may cause irritation. Vapour inhalation at high concentrations may result
in asphyxiation or the heart may become sensitized, causing cardiac arrhythmia. When concentration of
R410A reach levels which reduce oxygen to 14-16% by displacement, symptoms of asphyxiation will
occur. An individual exposed to high concentrations of R410A must be given medical attention
immediately. Adequate ventilation must be provided at all times.
Medical Advice
Semiotics or support therapy is recommended. Cardiac sensitisation has been observed that, in the
presence of circulating catecholamines such as adrenalin, may cause cardiac arrhythmia and accordingly,
in case of exposure to high concentrations, cardiac arrest.
Prolonged Exposure
R410A: a study on the effects of exposure to 50,000 ppm during the whole life of rats has identified the
development of benign testicle tumour.
This situation should therefore be negligible for personnel exposed to concentrations equal to or lower
than professional levels.
Professional Levels
R410A: Recommended threshold: 1000 ppm v/v - 8 hours TWA.
Stability
R410A: without specifying
Conditions to Avoid
Do not use in the presence of high temperatures, flames, burning surfaces and excess humidity.
Hazardous Reactions
Contact with certain red-hot metals may result in exothermic or explosive reactions and yield toxic and/or
corrosive decomposition products. Specific materials to avoid include freshly abraded aluminium surfaces
and active metals such as sodium, potassium, calcium, powdered aluminium, magnesium and zinc.
Hazardous
Decomposition
Products
R410A: Halogen acids produced by thermal decomposition and hydrolysis.
General Precautions
Do not inhale concentrated vapours. Their concentration in the atmosphere should not exceed the
minimum pre-set values and should be maintained below the professional threshold. Being weightier than
the air, the vapour concentrates on the bottom, in narrow areas. Therefore, the exhaust system must work
at low level.
Respiratory System
Protection
If you are in doubt about the concentration in the atmosphere, it is recommended to wear a respirator
approved by an accident prevention Authority, of the independent or oxygen type.
Storage
Cylinders must be stored in a cool, dry and properly ventilated storage area away from heat, flames,
corrosive chemicals, flumes, explosives and be otherwise protected from damage. Keep a temperature
below 50°C.
Protective Clothing
Wear overalls, protective gloves and goggles or a mask.
Accidental Release
Measures
It is important to wear protective clothing and a respirator. Stop the source of the leak, if you can do this
without danger. Negligible leaks can be left evaporating under the sun, providing that the room is well
ventilated. Considerable leaks: ventilate the room. Reduce the leak with sand, earth or other absorbing
substances. Make sure that the liquid does is not channelled into gutters, sewers or pits where the vapours
are likely to create a stuffy atmosphere.
Disposal
The best method is recovery and recycling. If this method is not practicable, dispose according to an
approved procedure, which shall ensure the absorption and neutralization of acids and toxic agents.
Fire Fighting
Information
R410A: Not flammable in the atmosphere.
Cylinders
The cylinders, if exposed to fire, shall be cooled by water jets; otherwise, if heated, they may explode.
Protective Fire
Fighting Equipment
In case of fire, wear an independent respirator and protective clothing.
