York YCAS0098EB, Installation Operation & Maintenance, Page: 11 / 184

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JOHNSON CONTROLS
FORM 201.18-NM7
SAFETY DATA R407C
Toxicity Low.
In contact with skin Liquid splashes or spray may cause freeze burns. Unlikely to be hazardous by skin absorp-
tion. Thaw affected areas with water. Remove contaminated clothing carefully – may adhere
to skin in case of freeze burns. Wash affected areas with plenty of warm water. If symptoms
occur (irritation or blistering) obtain medical attention.
In contact with eyes Vapor has no effect. Liquid splashes or spray may cause freeze burns. Immediately irrigate
with eyewash solution or clean water for at least 10 minutes. Obtain immediate medical
attention.
Ingested Highly unlikely to occur – but should this occur freeze burn will occur. Do not induce vomit -
ing. Provided patient is conscious, wash mouth with water and give about 250 ml (0.5 pint) to
drink. Obtain immediate medical attention.
Inhalation High atmospheric concentrations may have an anaesthetic effect, including loss of
consciousness. Very high exposures may cause an abnormal heart rhythm and prove
suddenly fatal.
At higher concentration there is a danger from asphyxiation due to reduced oxygen content of
atmosphere. Remove patient to fresh air, keep warm and at rest. Administer oxygen if neces -
sary. Apply artificial respiration if breathing has ceased or shows signs of failing. In event of
cardiac arrest apply external cardiac massage. Obtain immediate medical attention.
Further medical Symptomatic and supportive therapy is indicated. Cardiac sensitization has been described
advice which may, in the presence of circulating catecholamines such as adrenaline, give rise
to cardiac arrhythmia’s and subsequent arrest following exposure to high concentrations.
Long-term exposure A lifetime inhalation study in rats has shown that exposure to 50,000 ppm resulted in benign
tumors of the testis. This is not considered to be of relevance to humans exposed to concen -
trations at or below the occupational exposure limit.
Occupational Recommended limit: 1000 ppm v/v - 8 hr TWA.
exposure limits
Stability Not specified.
Conditions to avoid Use in presence of naked flames, red hot surfaces and high moisture levels.
Hazardous reactions May react violently with sodium, potassium, barium and other alkali and alkaline earth metals.
Incompatible materials: Magnesium and alloys containing more then 2% magnesium.
Hazardous Halogen acids by thermal decomposition and hydrolysis.
decomposition
products
General precautions Avoid inhalation of high concentrations of vapors. Atmospheric concentrations should be min -
imized and kept as low as reasonably practicable below the occupational exposure limit. The
vapor is heavier than air and collects at low level and in confined areas. Ventilate by extraction
at lowest levels.
Respiratory protection Where doubt exists on atmospheric concentration, HSE approved breathing apparatus should
be worn. This should be self contained or of the long breather type.
Storage Keep containers dry and in a cool place away from fire risk, direct sunlight, and all sources of
heat such as radiators. Keep at temperatures not exceeding 45°C.
Protective clothing Wear overalls, impervious gloves and goggles/face protection.
Spill/leak procedure Ensure suitable personal protective clothing and respiratory protection is worn. Provided it is
safe to do so, isolate the source of the leak. Allow small spillage’s to evaporate provided there
is suitable ventilation.
Large spillages: Ventilate area. Contain spillage’s with sand, earth or any suitable absorbent
material. Prevent liquid from entering drains, sewers, basements and work pits since vapor
may create a suffocating atmosphere.
Disposal Best to recover and recycle. If this is not possible, destruction is to be in an approved facility
which is equipped to absorb and neutralize acids and other toxic processing products.
Fire extinguishing Non-flammable at atmospheric conditions.
data
Containers Fire exposed containers should be kept cool with water sprays. Containers may burst if over -
heated.
Fire fighting Self contained breathing apparatus and protective clothing must be worn in
protective equipment fire conditions.
REFRIGERANT DATA:
MATERIAL SAFETY DATA
General Chiller Information & Safety