Cartechnic CT12 plus / pure Cartechnic CT12 plus / diluted VW G13 / pure VW G13 / diluted
Description
Pure Substance
Automotive antifreeze, also called coolant, is the liquid which is used in the radiator and cooling system of an internal combustion engine for vehicles.
The main ingredient in most coolants is ethylene glycol or propylene glycol. Automotive antifreeze keeps the cooling water from freezing in winter and from boiling in summer. A further task is to lubricate the cooling system, such as the water pump. Most antifreezes contain corrosion inhibitors and other additives, like foam depressants.
Diluted Substance
Besides its use in radiator systems, automotive antifreeze mixed with water is also a heat transfer liquid for cooling thermostats or circulators used in labs.
Common mixtures are 50:50 or 40:60 of antifreeze : water. Other mixtures are 30:70 or 20:80 of antifreeze : water (% by volume). Mixtures with lower antifreeze content have also lower viscosity, which leads to less flow resistance and less load of the thermostat's pump.
Such liquids can be used for flow temperatures down to -25°C, depending on the application the thermostat is used for. Below this temperature the flow resistance due to increasing viscosity (and possibly long hoses with quick connectors) is too high for proper cooling performance.
Viscosity Tables – Measurement data
Table CT12+ Pure
Temp. [°C]
Dyn. Viscosity [mPa.s]
Kin. Viscosity [mm²/s]
Density [g/cm³]
20
31.72
28.12
1.1282
15
40.86
36.11
1.1316
10
53.59
47.22
1.135
5
71.72
63.01
1.1383
0
98.15
85.98
1.1416
-5
137.63
120.22
1.1448
-10
198.25
172.68
1.1481
-15
294.07
255.4
1.1514
-20
450.54
390.18
1.1547
-25
715.28
617.58
1.1582
-30
1181.23
1016.9
1.1616
-35
2036.19
1747.8
1.165
-40
3662.42
3135.1
1.1682
CT12+ Automotive Antifreeze pure - kinematic viscosity and density over temperature
Table VW G13 Pure
Temp. [°C]
dyn. viscosity [mPa.s]
kin. viscosity [mm²/s]
Density [g/cm³]
20
45.37
39.72
1.1421
15
59.80
52.21
1.1455
10
80.03
69.66
1.1488
5
109.42
94.98
1.1521
0
153.14
132.55
1.1553
-5
220.00
189.89
1.1586
-10
325.09
279.80
1.1619
-15
495.44
425.19
1.1652
-20
780.88
668.19
1.1686
-25
1276.40
1089.20
1.1720
-30
2166.70
1843.70
1.1752
-35
3841.20
3259.50
1.1784
-40
7138.30
6040.80
1.1817
-45
13914.00
11743.00
1.1848
VW G13 Automotive Antifreeze pure - kinematic viscosity and density over temperature
Table VW G13 | Diluted 60 : 40 Antifreeze : Water (% by vol)
[exact content of antifreeze, considering volume contraction: 63.15 % by vol]
Temp. [°C]
dyn. viscosity [mPa.s]
kin. viscosity [mm²/s]
Density [g/cm³]
20
6.34
5.8
1.0935
15
7.75
7.06
1.0964
10
9.53
8.67
1.0992
5
11.91
10.81
1.1019
0
15.14
13.71
1.1046
-5
19.64
17.73
1.1073
-10
26.04
23.46
1.1099
-15
35.43
31.85
1.1125
-20
49.65
44.53
1.115
-25
71.79
64.24
1.1174
-30
107.48
95.97
1.1199
-35
167.29
149.07
1.1222
-40
271.31
241.24
1.1247
-45
459.01
407.24
1.1271
-50
813.83
720.44
1.1296
VW G13 diluted 60:40 with water (% by volume) - kinematic viscosity and density over temperature
Table CT12+ | Diluted 50 : 50 Antifreeze : Water (% by vol)
[exact content of antifreeze, considering volume contraction: 51.8 % by vol]
Temp. [°C]
Dyn. Viscosity [mPa.s]
Kin. Viscosity [mm²/s]
Density [g/cm³]
20
3.98
3.72
1.0695
15
4.72
4.4
1.0721
10
5.69
5.29
1.0744
5
6.96
6.46
1.0777
0
8.66
8.02
1.0800
-5
10.98
10.15
1.0822
-10
14.23
13.13
1.0842
-15
18.91
17.4
1.0863
-20
25.83
23.74
1.0883
-25
36.34
33.33
1.0903
-30
52.96
48.49
1.0921
-35
80.24
73.35
1.0939
-40
126.95
115.86
1.0957
CT12+ diluted 50:50 with water (% by volume) - kinematic viscosity and density over temperature
Table VW G13 | Diluted 50 : 50 Antifreeze : Water (% by vol)
[exact content of antifreeze, considering volume contraction: 51.48 % by vol]
Temp. [°C]
dyn. viscosity [mPa.s]
kin. viscosity [mm²/s]
Density [g/cm³]
20
4.29
3.98
1.0771
15
5.14
4.76
1.0797
10
6.22
5.75
1.0824
5
7.64
7.04
1.0849
0
9.53
8.77
1.0873
-5
12.14
11.14
1.0897
-10
15.80
14.47
1.0919
-15
21.08
19.27
1.0941
-20
28.90
26.37
1.0962
-25
40.91
37.25
1.0982
-30
59.89
54.44
1.1001
-35
91.03
82.60
1.1020
VW G13 Automotive Antifreeze diluted 50:50 with water (% by volume) - kinematic viscosity and density over temperature
Table CT12+ Diluted | 40 : 60 Antifreeze : Water (% by vol)
[exact content of antifreeze, considering volume contraction: 45.41 % by vol]
Temp. [°C]
Dyn. Viscosity [mPa.s]
Kin. Viscosity [mm²/s]
Density [g/cm³]
20
3.32
3.13
1.0612
15
3.95
3.71
1.0635
10
4.71
4.42
1.0659
5
5.72
5.35
1.0681
0
7.05
6.59
1.0702
-5
8.88
8.28
1.0722
-10
11.42
10.63
1.0741
-15
15.06
14.00
1.0759
-20
20.44
18.96
1.0776
-25
28.51
26.42
1.0793
CT12+ diluted 40:60 with water (% by volume) - kinematic viscosity and density over temperature
Table VW G13 Diluted | 40 : 60 Antifreeze : Water (% by vol)
[exact content of antifreeze, considering volume contraction: 39.07 % by vol]
Temp. [°C]
dyn. viscosity [mPa.s]
kin. viscosity [mm²/s]
Density [g/cm³]
20
3.01
2.84
1.0591
15
3.54
3.34
1.0614
10
4.22
3.96
1.0636
5
5.09
4.78
1.0656
0
6.26
5.86
1.0676
-5
7.85
7.34
1.0694
-10
10.04
9.38
1.0710
-15
13.18
12.29
1.0726
-20
17.76
16.53
1.0740
VW G13 diluted 40:60 with water (% by volume) - kinematic viscosity and density over temperature
Table CT12+ Diluted | 30 : 70 Antifreeze : Water (% by vol)
[exact content of antifreeze, considering volume contraction: 34.42 % by vol]
Temp. [°C]
Dyn. Viscosity [mPa.s]
Kin. Viscosity [mm²/s]
Density [g/cm³]
20
2.49
2.38
1.0466
15
2.92
2.79
1.0484
10
3.45
3.29
1.0504
5
4.15
3.94
1.0521
0
5.07
4.81
1.0537
-5
6.31
5.97
1.0568
-10
8.05
7.61
1.0574
-15
10.51
9.93
1.0584
-20
14.13
13.34
1.059
CT12+ diluted 30:70 with water (% by volume) - kinematic viscosity and density over temperature
Table VW G13 Diluted | 30 : 70 Antifreeze : Water (% by vol)
[exact content of antifreeze, considering volume contraction: 29.64 % by vol]
Temp. [°C]
dyn. viscosity [mPa.s]
kin. viscosity [mm²/s]
Density [g/cm³]
20
2.34
2.24
1.0450
15
2.70
2.58
1.0470
10
3.18
3.04
1.0488
5
3.81
3.63
1.0505
0
4.63
4.41
1.0520
-5
5.75
5.46
1.0533
-10
7.28
6.90
1.0544
-15
9.45
8.95
1.0553
VW G13 diluted 30:70 with water (% by volume) - kinematic viscosity and density over temperature
Table CT12+ Diluted | 20 : 80 Antifreeze : Water (% by vol)
[exact content of antifreeze, considering volume contraction: 23.21 % by vol]
Temp. [°C]
Dyn. Viscosity [mPa.s]
Kin. Viscosity [mm²/s]
Density [g/cm³]
20
1.86
1.80
1.0313
15
2.16
2.09
1.0327
10
2.53
2.45
1.0342
5
3.01
2.91
1.0355
0
3.65
3.52
1.0366
-5
4.50
4.34
1.0374
-10
5.67
5.46
1.0381
CT12+ diluted 20:80 with water (% by volume) - kinematic viscosity and density over temperature
Table VW G13 Diluted | 20 : 80 Antifreeze : Water (% by vol)
[exact content of antifreeze, considering volume contraction: 19.10 % by vol]
Temp. [°C]
dyn. viscosity [mPa.s]
kin. viscosity [mm²/s]
Density [g/cm³]
20
1.76
1.71
1.0288
15
2.01
1.95
1.0305
10
2.34
2.27
1.0319
5
2.76
2.67
1.0331
0
3.32
3.21
1.034
-5
4.07
3.93
1.0347
-10
5.09
4.92
1.0351
VW G13 diluted 20:80 with water (% by volume) - kinematic viscosity and density over temperature
Table VW G13 Diluted | 10 : 90 Antifreeze : Water (% by vol)
[exact content of antifreeze, considering volume contraction: 12.74 % by vol]
Temp. [°C]
dyn. viscosity [mPa.s]
kin. viscosity [mm²/s]
Density [g/cm³]
20
1.53
1.50
1.0188
15
1.72
1.69
1.0202
10
1.97
1.93
1.0213
5
2.29
2.24
1.0222
0
2.72
2.66
1.0228
-5
3.31
3.23
1.0230
VW G13 diluted 10:90 with water (% by volume) - kinematic viscosity and density over temperature
Volume Contraction for Diluted Substance Antifreeze : Water
Due to volume contraction, the nominal relation values for the mixtures in % by volume are not exact in the above tables. Volume contraction in chemistry means that if mixing two different liquids the total volume is less than the sum of the single components' volumes. For example, if adding 100 mL of water to 100 mL of ethanol, the resulting volume is less than 200 mL. How strong this effect is depends on the components, but it is considerable if mixing water and alcohol.
The exact content of antifreeze in the tested mixtures in % by volume is given in brackets [ ].
See also the charts that show viscosity and density over exact concentration for several temperatures and both substances, CT12+ and VW G13.
CT12+ and VW G13 diluted with water - kinematic viscosity over concentration (% by volume) at several temperatures
CT12+ and VW G13 diluted with water - density over concentration (% by volume) at several temperatures
Reference
Measured with SVM™.
Metainformation
Reference
Measurement with SVM™
Kin. vis.
yes
Dyn. vis.
yes
Density
yes
Multiple temperatures
yes
Related
Glycol, antifreeze, coolant, heat transfer liquid
Nastavení cookies
Na našich internetových stránkách používáme soubory cookie. Některé z nich jsou nezbytné (např. pro nákupní košík), jiné nám pomáhají pro Vás dlouhodobě vylepšovat a usnadňovat online obsah prostřednictvím analýz, externích médií a marketingových služeb. S vaším souhlasem (čl. 49 (1) (a) GDPR) můžeme používat soubory cookie třetích stran od poskytovatelů z USA, jako je Google nebo Facebook. Vaše údaje mohou být předány do USA, kde úroveň ochrany údajů není srovnatelná s GDPR. V takovém případě mohou mít k vašim údajům přístup úřady USA za účelem sledování a vy nemusíte mít možnost uplatnit účinné opravné prostředky. Všechny cookies můžete přijmout kliknutím na tlačítko nebo definovat svá nastavení cookies pomocí odkazu „Přizpůsobení nastavení cookies“.
Pokud odmítnete všechny soubory cookie, budou použity pouze technicky požadované soubory cookie. Svůj souhlas můžete odvolat i později, a to v Nastavení souborů cookie.
Marketingové soubory cookie používají třetí strany nebo vydavatelé k zobrazování personalizované reklamy. Provádějí to sledováním, na které internetové stránky návštěvníci přecházejí.
Shromažďujeme a slučujeme údaje o našich návštěvnících a jejich chování na našich stránkách. Tyto informace se používají pro zlepšování internetových stránek.
Obsah z video platforem a platforem sociálních médií je ve výchozím nastavení blokován. Pokud přijímáte soubory cookies z externích médií, nevyžaduje přístup k tomuto obsahu již ruční souhlas.
Poté, co jsem byl informován o možných rizicích pro mé údaje (včetně přenosu do USA a možného přístupu amerických úřadů) v banneru o souborech cookie a zásadách ochrany osobních údajů, přijímám soubory cookie od poskytovatelů z USA.
