DESCRIPTION
Zitrec FC
- mixed with the appropriate amount of
water - is a multipurpose heat transfer fluid based on mono propylene glycol
and contains only FDA approved ingredients.
Zitrec FC
is found acceptable by NSF International for use as a heat transfer fluid
where there is the possibility of incidental food contact.
APPLICATION
Many applications in the industry require a fluid to
transport heat or cold. This transport medium is usually called secondary
refrigerant or secondary coolant. The ideal secondary refrigerant must
ensure a good thermal conductivity, have a high specific heat, be
non-flammable and compatible with common engineering materials. Preferably
the heat transfer fluid is also of low toxicity, which is specifically in
the food industry of vital importance.
Defrosting, cooling and freezing are frequently part of an entire food chain
process. In these applications,
Zitrec FC
and its dilutions are especially useful. Some
typical examples include the cooling in the beverage industries such as the
cooling of wine, beer, milk and juices. But also during the brewing process,
the cooling of fermentation and wort tanks is essential and
Zitrec FC
will provide here the necessary heat transfer.
Further in the chain,
Zitrec FC can
be used during the bottling process of
carbonated beverages, such as champagne or beer, preventing as such loss of
carbonation.
Other applications include indirect contact freezing. During this
process, the product and a heat transfer fluid are separated by means of an
interface or barrier between the cooling medium and the product. This
interface can be a metal plate or the products packaging material, which
prevents direct contact between the product and the cooling medium. Contact
freezing is mainly used to cool packed fish and meat products in blocks with
preset linear dimensions.
Zitrec FC
provides protection against boiling,
freezing and corrosion in each application. The dilution is determined by
system requirements, mainly freezing requirements. However, to ensure good
corrosion protection it is recommended to use at least 30 vol. % of
Zitrec FC
in the coolant solution. Mixtures with more than 70 vol. % of
Zitrec FC
in water are not recommended, because the physical properties like heat
transfer are no longer sufficient, and no further decrease of the freezing
point can be attained.
Zitrec FC
and its dilutions must be used
in a manner which prevents direct or indirect contamination of edible
products as they are not suitable for use as a direct food component or
additive.
|
Dilution Zitrec FC, vol % |
Freezing point, °C |
Dilution Zitrec FC, vol % |
Freezing point, °C |
|
31.6 |
-15 |
49.3 |
- 35 |
|
37.3 |
-20 |
52.2 |
-40 |
|
42.0 |
-25 |
54.7 |
- 45 |
|
46.0 |
- 30 |
57.0 |
- 50 |
COMPATIBILITY AND MIXABILITY
Zitrec FC
is compatible with most other heat
transfer fluids based on propylene glycol. Exclusive use of
Zitrec FC
is recommended for optimal corrosion
protection.
Zitrec FC
should only be mixed with soft
distilled water. To prevent any contamination, we will provide you with
ready-to-use dilutions. Contact us for more information.
Zitrec FC
should only be diluted with clear, uncoloured and odourless water that meets
following requirements :
Total water
hardness: max. 2,8 °dH (German hardness degrees)
Chlorides
(Cl-) : max. 50 mg/l
Iron and
Copper content: max 0.5 mg/l
Electrical
conductivity: max 10 µS/cm
pH at 20°C :
5 – 7
Chemical and physical properties
|
Properties |
Zitrec FC |
Method |
Properties |
Zitrec FC |
Method |
|
Propylene glycol |
96 % w/w typ. |
Internal |
|
|
|
|
Inhibitor content |
2 % w/w typ. |
internal |
Density, 20°C |
1.051 kg/dm3 typ. |
ASTM D1122 |
|
Water content |
5 % w/w max |
ASTM D1123 |
Equilibrium boiling point |
164°C typ. |
ASTM D1120 |
|
Nitrite, amine, nitrate, silicate |
nil |
IC/EAF |
pH, 20°C |
9.9 typ. |
ASTM D1287 |
|
Colour |
uncoloured |
visual |
Refractive Index, 20°C |
1.433 typ. |
ASTM D1218 |
CORROSION PROTECTION
The
use of uninhibited MPG as a heat transfer fluid would lead to corrosion
problems within the installation, resulting into higher maintenance cost,
reduced reliability and loss in overall efficiency.
Zitrec FC
will protect the metals and alloys in your equipment against all forms of corrosion.
The combination of a low toxicity and FDA-approved ingredients, with a high
level of corrosion protection, makes
Zitrec FC
unique on the market. Competitive
products offer often insufficient protection on aluminum and copper. Given
the frequent use of copper in the food industry, the excellent protection that
Zitrec FC
provides on copper alloys makes it a
truly remarkable product.
Anti-corrosion performance is demonstrated through standard and specific
corrosion testing.
|
ASTM D1384 |
Weight loss in mg/coupon1 |
|||||
|
Brass |
Copper |
Solder |
Steel |
Cast Iron |
Aluminum |
|
|
‘Industry’ limit (max) |
10 |
10 |
30 |
10 |
10 |
30 |
|
Reference product 2 |
2 |
11 |
2 |
0 |
1 |
24 |
Zitrec FC |
1 |
2 |
4 |
1 |
1 |
4 |
1 : Weight loss AFTER chemical cleaning. Weight
gain is indicated by a - sign. Test conditions are at 33 vol-%
2 : Reference product is a competitive mono propylene glycol based product
|
Dynamic heat transfer corrosion test (2000 W - 48 hrs) |
Weight loss in mg/coupon1 on Copper |
|
Zitrec FC |
|
|
Reference product
2 |
|
1 Weight loss AFTER chemical cleaning. Weight gain is indicated by
a - sign. Test conditions are 20 vol-%
2 Reference product is an industrial mono propylene glycol based
product
STORAGE REQUIREMENTS
The product should be stored at ambient temperatures and periods of exposure
to temperatures above 35°C should be minimized. As with any antifreeze
coolant, the use of galvanized steel is not recommended for pipes or any
other part of the storage/mixing installation.
It is strongly recommended to use new
containers and not recycled ones.
TOXICITY & SAFETY
Zitrec FC
consists for 100% of FDA approved raw
materials for heat transfer fluids with incidental food contact.
Zitrec FC
is conform to the requirements of the NSF Nonfood Compounds Registration
Program. It is listed in the NSF White Book Listing of Nonfood Compounds
(www.nsf.org
- registration number 136845),
in
category HT1 - Heat Transfer Fluids with incidental food contact.
Neither
the concentrated
Zitrec FC
nor any dilution are classified according
to the European Dangerous Preparations Directive. The transport is not
regulated.
For detailed Toxicity and Safety Data we refer to the Material Safety Data
Sheet.
All information contained in this Product Information Leaflet is accurate to the best of our knowledge and belief as at the date of issue specified. However, the Company makes no warranty or representation, express or implied, as to the accuracy or completeness of such information.
ZITREC FC
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