Antifrogen SOL HT - Hubbard-Hall

Functional Chemicals Division 

Product description 

Antifrogen SOL HT is a physiologically harmless, 

green-tinted, clear liquid based on an aqueous 

solution of higher glycols, which is used as a heat 

transfer medium in solar heating systems, especially 

those exposed to high thermal loads. The product is 

premixed with deionized water to give a frost 

resistance of about -23 °C (-9.4°F). It meets the 

requirements of DIN 4757, part 3, for solar heating 

systems. 

June 2008 

®= registered trademark Page 1/12 

Clariant Corporation 


Mt. Holly, NC 

Antifrogen ® SOL HT 

Premixed heat transfer medium for solar applications with high 

thermal loads including antifreeze and corrosion-inhibiting 

protection. 

Density at 20 °C (68°F) (DIN 51757) lbs/gal about 9.01 

Refractive index nD at 20 °C (68°F) (DIN 51423, part 2) about. 1.401 

pH-value (undiluted, DIN 51369) about 9 

Residual alkalinity (ASTM D 1121) ml c(HCI) 0.1 M 3 - 4 

Boiling point at 1013 mbar (ASTM D 1120) °C/°F about 105/(221°F) 

Pour point (DIN 51583) °C/°F about –28/(-18.4°F) 

Kinematic Viscosity at 20 °C (68°F) 

(DIN 51562) at 80 °C (176°F) 

• Based on higher glycols 

• Plus anticorrosion additives 

• Premixed heat transfer medium 

• Permanent usage temperatures: approx. -23 to 

+200 °C (-9 to 392 °F) 

• Suitability of plastics/elastomers → page 4 

• Harmless to health 

• Applicable in any thermal solar collector 

mm²/s 

about 7.4 

about 1.44 

Specific heat at 20 °C/(68°F) kJ/kg*K about 3.2 

Thermal conductivity at 20 °C/(68°F) W/m*K about 0.36 

Specific electrical conductivity at 20 °C/(68°F) µS/cm > 1000 

Freezing Point (ASTM D 1177) °C/°F about -23/(-9.4°F) 

Contact Informaiton: 

Jeff McManus 

jeff.mcmanus@clariant.com


Notes on use 

Product properties 

The technical data below is used to describe the 

product and is taken from our own measurements or 

from literature. It does not constitute part of the 

delivery specification. The mandatory product 

specification will be found in the current technical 

data sheet. 

The certified quality system in accordance with DIN 

EN ISO 9001 is used in production and quality 

control. This ensures consistently high product 

quality. 

Application properties 

Antifrogen SOL HT was developed especially for use 

as a heat transfer medium in solar systems. The 

product is physiologically harmless. 

Phase separation of Antifrogen SOL HT/water 

mixtures does not occur. 

Frost resistance of the mixture does not change even 

after many years’ use, provided the Antifrogen SOL 

HT concentration remains constant. 

Since Antifrogen SOL HT has a higher viscosity and 

density than pure water, a higher pressure drop must 

be expected in pipelines etc; graphs of the relative 

heat transfer coefficient and relative pressure drop – 

in comparison with pure water – are particularly 

useful for calculation purposes. These graphs and 

other physical data can be found in the appendix. 

Antifrogen SOL HT contains corrosion inhibitors that 

protect the metals of the solar systems, even in 

combined systems, permanently against corrosion and 

prevent the formation of boiler scale. 

The effectiveness of the inhibitor combinations is 

checked constantly by the manufacturer by means of 

the well-known corrosion test method ASTM D 1384 

(American Society for Testing and Materials). 


June 2008 




Mt. Holly, NC 

Glycol/water mixtures without inhibitors cannot 

be used because they are more corrosive than pure 

water alone. 

The following table shows the relatively low 

corrosion of common metals caused by an Antifrogen 

SOL HT compared with water and cooling brine. 

The values, determined by the above mentioned 

ASTM method, show the weight loss of metals in 

g/m² due to corrosion: 

Corrosion of metals in g/m², tested in accordance 

with ASTM D 1384 (336 h/88 °C/(190.4°F), 6 l 

air/h) 

Copper 

Soft solder 

(WL 30) 

Brass 

(MS 63) 

Steel 

(CK 22) 

Cast Iron 

(GG 25) 

Cast Aluminium 

(AlSi6Cu3) 

Stainless steel 

(1.4541) 

Antifrogen SOL 

HT a 

Higher Glycols b 

Contact Information: 

Jeff McManus 

jeff.mcmanus@clariant.com 

Propylene glycol c 

Tap water d 

-2.3 -15.3 -2.8 -1 

-3.7 -68.2 -136 -11 

-1.0 -64.4 -2.5 -1.0 

< 0.1 -148.5 -225 -76 

-0.4 -73.5 -92 -192 

-1.5 -6.7 

< -0.1 Not 

tested 

-68 -32 

Not 

tested 

-0.5 

a Antifrogen SOL HT (undiluted); b Higher glycols 1:1 water mixture 

without inhibitors; c Propylene glycol 1:2 water mixture without 

inhibitors, d Tap water (14° dH);


It is advisable, if at all possible, not to use the 

product in galvanized pipelines, since all 

glycol/water mixtures can dissolve zinc. 

The good corrosion-inhibiting properties of 

Antifrogen SOL HT decrease as expected with 

increasing water content. The water used to dilute 

Antifrogen N shall contain no more than 100 mg/kg 

(ppm) chlorides. A wide range of water hardness is 

acceptable (between 0 and 180 ppm). This means, 

that in addition to fully deionized water, ordinary 

tap water may be used. 

The frost resistance of Antifrogen SOL HT is 

adjusted to a pour point of -28 °C/(-18.4°F) (freezing 

point: -23 °C/(-9.4°F)). Trials have shown that under 

North American winter conditions this formulation 

will not cause bursts in metal system components 

because slush ice is formed when the product is 

cooled below the crystallization point. The frost 

resistance is of course reduced by mixing with water, 

as the curves in the appendix indicate. 

Special antifreeze testers are available for 

determining frost resistance. 

Antifrogen SOL HT is premixed with deionized water 

and formulated to give the optimum frost and 

corrosion resistance. If traces of water still remain in 

the system after flushing or the user inadvertently 

dilutes the product, additions of water up to 10% can 

be tolerated without any adverse effect on corrosion 

resistance. 

Heat resistance 

Antifrogen SOL HT was developed because of the 

increased use of vacuum collectors, which have a 

high stagnation temperature of over +260 

°C/(+500°F). Typical ethylene and propylene glycol 

based heat transfer media tends to evaporate in such 

systems at high temperatures due to the low boiling 

point of these glycols. They leave partially insoluble, 

salt-like residues that can lead to operating problems 

if the collector is frequently idle and can result in 

failure of the system. Antifrogen SOL HT consists 


June 2008 




Mt. Holly, NC 

predominantly of higher-boiling, physiologically 

harmless, higher-molecular-weight glycols with a 

boiling point of over +270 °C/(+518°F)at 1013 mbar. 

Use of Antifrogen SOL HT ensures that the abovementioned 

residues remain liquid. 

Nevertheless, operating temperatures of more than 

+200 °C/(+392°F) should be avoided. At higher 

temperatures not only can the chemical basis of the 

heat transfer medium decompose, causing the liquid 

to darken, but some corrosion inhibitors can also be 

inactivated. Sporadic high temperature loads can 

cause a decoloration of the fluid, but decoloration 

alone has no effect on the properties of the product. 

Circulating pumps should be selected with special 

regard to their suitability for operation with antifreeze 

agents. Pump components made, for example, of 

materials based on phenolic resins do not meet this 

requirement. However, the circulating pumps 

normally used in heating installations have been 

found to be resistant. 

According to data published in the literature and the 

results of our own tests and trials, the following 

plastics and elastomers are suitable for the 

manufacture of components coming into contact with 

Antifrogen SOL HT. The maximum temperatures 

specified by the manufacturer should not be 

exceeded. 


Jeff McManus 



Butyl rubber (IIR) 

Fluorcarbon elastomers, e.g. (FPM) 

®Viton (Du Pont) 

Natural rubber up to 80 °C (NR) 

Nitrile rubber, e.g. 

®Perbunan (Bayer) 

Olefin rubber, e.g. ®Buna AP 

(Bayer) 


June 2008 




Mt. Holly, NC 

(NBR) 

(EPDM) 

Polychlorbutadiene 

(CR) 

elastomers, e.g. ® Neopren 

Silicon rubber, e.g. ®Elastosil (Si) 

(Wacker) 

Styrene butadiene rubber up (SBR) 

to 100 °C 

Polyacetal, e.g. ®Hostaform (POM) 

(Ticona) 

Polybutene, e.g. ®Rhiatherm (PB) 

(Simona) 

Polyester resins (UP) 

Polypropylene, e.g. 

®Hostalen PPH 2222 

(PP) 

Polyvinylidenedifluorid (PVDF) 

Polytetrafluoroethylene, e.g. 

®Hostaflon 

flex. Polyolefine 

e.g. ®Bauder Thermoplan T- 

SV (for flat roofs) 

(PTFE) 

(FPO) 

Phenol-formaldehyde resins, plasticized PVC and 

polyurethane elastomers are not resistant. 

Experience has shown that the well-known IT 

(rubber-asbestos) seals, as well as EPDM elastomer 

seals are suitable for these systems. 

For threaded pipe connections, in which hemp is used 

as a seal, coating with Fermit or Fermitol (Nissen und 

Volk) or Loctite 511 (Loctite Corp.) has proved 

successful. 

Tests have shown that the materials used for pressure 

surge compensators e.g. ® Flexon (Flamco) are not 

affected by Antifrogen SOL HT. 

Notes for use in solar heating systems 

Antifrogen SOL HT is an ideal heat transfer medium 

for highly stressed solar heating systems, particularly 

those with vacuum collectors. The materials normally 

used in solar heating systems, such as copper, 

stainless steel and aluminum, are protected from 

corrosive attack for many years by special corrosion 

inhibitors. To ensure optimum protection, the 

following advice should be followed: 

1. The system should conform with the 

requirements of DIN 4757 and must be designed 

as closed circuits. The membrane pressure surge 

compensators must conform with DIN 4807. 

2. Before filling, the system should be flushed out 

with water. Pipe joints, valves and circulating 

pumps should be pressure-tested for leaks. 

3. Hard-soldered joints are preferable to softsoldered. 

Traces of flux (if possible chloride- 

free) must be removed by pumping through with 

hot water. 

4. If at all possible, galvanized components should 

not be used in the system. Zinc is not resistant to 

the Antifrogen SOL HT and tends to start 

dissolving, which can lead to formation of 

sludge. Dirt traps and filters can help here. 

5. After pressure testing, the system should be 

drained and then filled immediately with 

Antifrogen SOL HT to eliminate any air pockets. 

This process also affords an opportunity to 

determine the capacity of the system from the 

amount of water used (water meter).XXXX 

XXXX XX XXXXXXXXxxxxxxxxxxxxXXXX 

XXXXXXXXX 


Jeff McManus 



6. Long-term no-load operation of the system 

should be avoided because this can adversely 

affect the stability of the heat transfer medium 

and considerably reduce its service life. 

7. In the event of leaks, always top off with 

undiluted Antifrogen SOL HT. Avoid mixing it 

with other products. If, in exceptional cases, 

water is used to top off the system, the 

concentration (= frost resistance) of the heat 

transfer medium should be checked with a 

hydrometer. The frost resistance should be at 

least –20°C/(-4°F) to ensure adequate frost and 

corrosion resistance. 

Service and monitoring 

It has been found that Antifrogen SOL HT can be 

used in installations for many years. However, the 

Antifrogen SOL HT concentration (= frost resistance) 

should be checked annually. As required, the 

performance of the heat transfer medium and level of 

corrosion inhibition can also be checked by Clariant. 

If a 250 ml sample is provided, this service can be 

undertaken by Clariant Corporation, 625 East 

Catawba Ave, Mt. Holly, North Carolina, 28120. 

The data in our service report relate solely to the 

sample sent to us. Guidance on further use of the 

product tested assumes that the system is in proper 

condition and properly operated. We would expressly 

point out that, particularly where corrosion or scale is 

already present in the system, interactions with the 

product may occur with unpredictable consequences. 

We accept no liability whatsoever for any damage 

resulting from the improper condition or operation of 

the system. 


Safety, Toxicology and Ecology 

June 2008 




Mt. Holly, NC 

Antifrogen SOL HT has neither a flash point nor an 

ignition point. The product is based on non-toxic 

glycols (higher polyalkylene glycols). The corrosion 

inhibitor formulation is phosphate and nitrite-free and 

consists essentially of physiologically harmless 

additives. 

Flash point 

(DIN 51758) 

Ignition temperatur 

(DIN 51794) 

Temperature class 

(DIN/VDE 0165) 

°C 

°F 

°C 

°F 


Jeff McManus 


> 105 (not detectable) 

> 221 

> 420 

> 788 

T2 

More information can be found in the material 

safety data sheet (MSDS). 

The results of ecotoxicological studies confirm the 

good biodegradability and toxicological inertness of 

Antifrogen SOL HT. In concentrations up to 1000 

mg/l, Antifrogen SOL HT shows no acute harmful 

effects on fish and bacteria. Antifrogen SOL HT is 

readily biodegradable. 

Spent Antifrogen SOL HT can be disposed of in a 

special waste incineration unit in accordance with 

local regulations. Further notes are contained in the 

latest material safety data sheet.


Transport and storage 

VbF (German regulations 

on flammable liquids) 

- 

GGVE/RID non-regulated 

GGVS/ADR non-regulated 

ADNR non-regulated 

IMDG-Code non-regulated 

DOT non-regluated 

IATA-DGR non-regulated 

Antifrogen SOL HT is supplied in road tankers, totes 

and drums. Since zinc is not resistant to Antifrogen 

SOL HT, galvanized transport and storage containers 

should not be used. The product has a storage 

stability of two years. 

This information is based on our present state of 

knowledge and is intended to provide general notes 

on our products and their uses. It should not therefore 

be construed as guaranteeing specific properties of 

the products described or their suitability for a 

particular application. Any existing industrial 

property rights must be observed. The quality of our 

products is guaranteed under our General Conditions 

of Sale. We would like to specifically point out that 

any corrosion or deposits already present in the 

system may interact with the product with 

unpredictable consequences. We accept no liability 

for any damage due to the system being maintained in 

an improper condition or operated incorrectly. 


June 2008 




Mt. Holly, NC 

Appendix 

The following graphs provide information on the 

most important physical properties of Antifrogen 

SOL HT. 

Due to calculations and the graphical illustration of 

the figures with an IT program, small variances of the 

physical data can occur. 


Functional Fluids Division 

Mt. Holly, North Carolina 

Tel. +1 704-822-2649, Fax +1 704-822-2193 

Clariant Vertrieb (Deutschland) GmbH & Co KG 

Division Functional Chemicals, Am Unisys Park 1 

D-65840 Sulzbach 

Tel. +49 6196/757-60, Fax: +49 6196/757-88 56 

Clariant Produkte (Deutschland) GmbH 

Werk Gendorf, Division Functional Chemicals 

Functional Fluids/R&D 

D-84504 Burgkirchen 

Tel. +49 8679/7-22 72, Fax: +49 8679/7-50 85 

Internet: 

http://www.clariant.com 


Jeff McManus 



Kinematic Viscosity [mm²/s] 

1000 

100 

10 


June 2008 




Mt. Holly, NC 

1 

Kinematic Viscosity 

of Antifrogen SOL HT 

0 

-30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 

Temperature [°C] 


Jeff McManus 


100 Vol.-% 

=Antifrogen 

SOL HT


Density [g/cm³] 


June 2008 




Mt. Holly, NC 

Density 


1.10 

1.09 

1.08 

1.07 

1.06 

1.05 

1.04 

1.03 

10/50 20/68 30/86 40/104 

50/122 

Temperature [°C/°F] 

60/140 70/158 80/176 


Jeff McManus 


100 Vol.-% 

= Antifroge 

SO L


Density [g/cm³] 

Spec. Heat [kJ/kgK] 

1.08 

1.08 

1.07 

1.07 

1.06 

1.06 

3.40 

3.35 

3.30 

3.25 

3.20 

3.15 

3.10 


June 2008 




Mt. Holly, NC 

Density 

of Antifrogen SOL HT - water mixtures 

7 8 8 9 9 10 

Antifrogen SOL HT [Vol.-%] 

Specific Heat 


40/104 50/122 60/140 70/158 80/176 



Jeff McManus 


100 Vol.-% 

=Antifrogen SOL HT


Thermal Conductivity [W/mK] 

0.40 

0.38 

0.35 

0.33 

0.30 


Comment on Thermal Conductivity: Thermal conductivity has been analyzed by two independent external institutions. Multiple evaluations have 

revealed a slightly increased spread of the data points, especially at low temperatures. In the graph the averaged values are illustrated. 

June 2008 




Mt. Holly, NC 

Thermal Conductivity 


-20/-4 0/32 20/68 40/104 60/140 80/176 100/212 


Vapor Pressure 


40/104 60/140 80/176 100/212 


0. 

0. 

0. 

0. 

0. 

0. 

0. 

0. 

0. 


Jeff McManus 


Pressure [bar]



June 2008 




Mt. Holly, NC 

Coefficient of Cubic Expansion 

of Antifrogen SOL VP 1981 

Coefficient of Cubic Expansion b [K -1 ] 

0.0009 

0.0008 

0.0007 

0.0006 

0.0005 

� = frost resistance 

0.0004 

-40/-40 -20/-4 0/32 20/68 40/104 60/140 


80/176 100/212 


Jeff McManus 


100 Vol.-% 

=Antifrogen SOL


Refractive Index [nD20] 

1.4 

1.4 

1.3 

1.3 

Frost Resistance [°C] 

-10 

-15 

-20 

-25 

-30 

Refractive Index 



7 8 8 9 9 10 


June 2008 




Mt. Holly, NC 

Frost Resistance 


75 80 85 90 95 100 



Jeff McManus

Antifrogen SOL HT - Hubbard-Hall

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?