Manufactered by : CRC Industries Europe NV Touwslagerstraat 1 – 9240 Zele – Belgium Tel  (32) (0) 52/45.60.11  Fax  (32) (0) 52/45.00.34 Technical Data Sheet KONTAKT CHEMIE Freeze 75 Super Page 1/2 Freeze spray KONTAKT CHEMIE Freeze 75 Super Description: Cooling agent, mixture of 1,1,1,2 tetrafluoroethane and difluoroethane General properties and applications: KONTAKT CHEMIE Freeze 75 Super is a mixture of fluorocarbons liquified under pressure. The  fluid  vaporises  very  quickly  and,  in  doing  so,  extracts  heat  of  vaporisation  from  the environment.  As  a  result,  the  sprayed  surface  cools  down  considerably.  Freeze  75  Super volatilises  totally;  conventional  constructional  materials  are  not  attacked.  The  refrigerant mixture  present  does  not  have  an  ignition  range  with  air.  KONTAKT  CHEMIE  Freeze  75 Super is used therefore in particular in areas where it is essential to eliminate dangers posed by the use of flammable gases and liquids. A typical application for the product is the location of thermal faults in electrical equipment. It is  also  suitable  for  the  freeze  shrinking  of  small  components,  for  the  removal  of  sticky contaminations from textiles, for the stiffening of "rubbery" materials and for the handling of histological specimens. KONTAKT CHEMIE Freeze 75 Super contains no CFC's. Technical data Composition 1,1 Difluorethane 10% 1,1,1,2- Tetrafluorethane 90% Density at 20°C FEA 605 1,165 g/m³ Vapour pressure    at 20°C   at 50°C FEA 604 FEA 604 460 kPa 1200 kPa Heat of vaporisation at boiling point (-25°C) Calculated 270 j/ml Lowest temperature achievable with glass thermometer   (at 20°C ,75% rel. humidity) in-house method -55°C Ignition range in air DKV Tagungsbericht, 17, m2, 169 – 191 (1990) non-combustible Flammability test FEA 610 non-flammable

Manufactered by : CRC Industries Europe NV Touwslagerstraat 1 – 9240 Zele – Belgium Tel  (32) (0) 52/45.60.11  Fax  (32) (0) 52/45.00.34 KONTAKT CHEMIE Freeze 75 Super Page 2/2 Application instructions: KONTAKT CHEMIE Freeze 75 Super is used for the location of thermal faults in electrical equipment. For this purpose the piece of equipment being tested is started up. If a fairly long period of operation is expected before faults occur, the warm-up phase can be accelerated using a hair drier. After the equipment malfunctions, suspect components are purposefully sprayed with Freeze 75 Super and changes in the function of the equipment are observed. A faulty component can quickly be located by this method. KONTAKT CHEMIE Freeze 75 Super can be used for the shrinkage of small components. In trials  it  was  possible,  for  example,  to  fit  ball  bearings  of  30  mm  outside  diameter  into transverse press fits. In moist air an ice coating forms on the surface on cooling. This ice coating is washed off before fitting, for example, using KONTAKT CHEMIE KONTAKT WL or another water-miscible solvent. Sticky  substances  such  as  chewing  gum  become  hard  and  friable  when  sprayed  with KONTAKT  CHEMIE  Freeze  75  Super.  They  can  then  be  teased  out  of  fabrics  without difficulty. Release papers on self-adhesive foils can readily be removed after brief spraying. Freezing with KONTAKT CHEMIE Freeze 75 Super is also suitable for the handling of soft rubber or histological sections. Components can be immersed in a small supply of refrigerant. Well-insulated small beakers of thick-walled Styropor® (polystyrene) are suitable as containers. The latter can be made, for example, from the used safety packaging of glass bottles. When  soldering  with  electric  soldering  irons,  sensitive  components  can  be  protected  from overheating. KONTAKT  CHEMIE  Freeze  75  Super  does  not  attack  ordinary  materials.  However,  parts which have a sensitive reaction to rapid changes of temperature must not be treated with the product. Freeze 75 Super volatilises completely. In a high humidity, dew is deposited which freezes into ice and then forms a whitish coating which disappears of its own accord. Using  the  procedures  described,  KONTAKT  CHEMIE  Freeze  75  Super  is  absolutely  safe from a health standpoint. The freezing agent must not however be sprayed into flames. If it were, it would decompose into very toxic substances.   The product can cause frostbite to the skin. It is not suitable therefore for the treatment of sporting injuries. Available: Aerosol :200 ml, 400 ml These values are not intended to be used as specifications.  They are based on what we believe reliable.  However it is the user’s responsibility to determine the suitability.