Antifreeze
Floixem® L
Propylene glycol based antifreeze.
Concentrate, dilute before use.
Non-toxic, biodegradable.
Description and applications
Concentrated propylene glycol based at -28ºC antifreeze should be diluted before use. For applications where a non-toxic and biodegradable product is required.
100% organic formulation (OAT) to guarantee the best protection for all types of metals and is compatible with plastics and elastomers normally present in circuits. Aluminium and its alloys are protected from corrosion.
Additives that are not consumed in action, no need to replenish with supplementary packs and no need to check residuals periodically.
Free of hazardous products such as nitrites, amines, nitrates, borates, benzoates, 2EH.
| Appearance | Transparent Liquid |
| Color | Blue |
| pH 35% in water at 20oC | 8.0-9.0 |
Results at INTA laboratories belonging to the Spanish Ministry of Defense according to ASTM D1384 standard.
| Metal | Floixem® L 33% | Limit |
| Copper | 0.5 | 10 |
| Soft Solder | 0.1 | 30 |
| Brass | -0.5 | 10 |
| Carbon Steel | -1.0 | 10 |
| Cast Iron | -3.7 | 10 |
| Aluminium | 2.0 | 30 |
Results in mg per control after 336 hours at 88oC with forced aeration and diluted 33% in corrosive water. Negative results indicate a weight gain of the control due to the formation of a stable protective layer.
Results in INTA laboratories belonging to the Spanish Ministry of Defense according to ASTM D4340.
| Results | Limit |
| 0.5 mg/cm2 week | 1.0 mg/cm2 week |
Data after exposure of an aluminium control to a 25% dilution of the product with corrosive water for 168 hours at 135oC and a pressure of 1.93 bar.
 |
 |
 |
|---|---|---|
| 5 Kg. | 4 | 128 |
| 10 Kg. | – | 60 |
| 20 Kg. | – | 36 |
| 230 Kg. | – | 2 |
| 1000 Kg | – | 1 |
Floixem®L is available in concentrated form, to dilute with
water according to the desired protection temperature.
| % volume Floixem® L | Freezing Temperature ºC | Protection Temperature ºC | Burst Temperature ºC |
|---|---|---|---|
| 20% | -8 | -9 | -10 |
| 25% | -9 | -11 | -13 |
| 30% | -12 | -16 | -18 |
| 35% | -16 | -20 | -22 |
| 40% | -20 | -25 | -29 |
| 45% | -25 | -32 | -38 |
| 50% | -30 | -40 | -49 |
The freezing temperature is the temperature at which the first ice crystal appears and coincides with those displayed by a refractometer. The breaking temperature is the temperature at which the entire product is frozen and there is an increase in volume and pressure that endangers the integrity of the system. Between the two temperatures above, there is a mixture of ice crystals and unfrozen glycol that flows without increasing in volume; the mid-point between the freezing and breaking temperatures is called the protection temperature.
A minimal proportion of 20% is required to ensure the additives are in an adequate proportion for protecting the system. Dilutions above 50% are not recommended.
In new installations it is recommended to rinse with water to remove particles, grease and flux residues (especially if they contain borax, chlorides or fluorides).
It is recommended to purge the circuit avoiding air pockets.
Teflon tape or hemp is recommended for sealing the threaded joints. Check the compatibility of other products with propylene glycol before use.
Propylene glycol and its dilutions are not compatible with zinc as it dissolves it. If galvanized pipe is present in the system, a whitish solid will appear at the beginning of the operation. Once removed, the resulting carbon steel will be protected by Floixem® L and no further precautions are necessary.
The mixing water must be drinking water with a maximum salt content of 100 ppm chloride.
Maximal recommended temperature for closed circuits is 200ºC.
Prolonged periods of time at temperatures above 200ºC can shorten the operating life of the product due to the degradation of propylene glycol.
In open circuits or where there is oxygen intake (valves, automatic fillings, etc.) the maximum temperature is lower. In case of doubt, consult the technical department
Precautions
Non-hazardous product according to current legislation.
No transportation or storage restrictions.
Store in original containers tightly closed and out of direct sunlight.
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