Below is a listing of all the product resistance notes associated with Jotun coatings. To view the contents of each note, simply click on the note title or the "Show Details" text. To hide the note contents, either click the note title or the "Hide Details" text.

1A) AGGRESSIVE CARGOES (Show Details...)   

These cargoes can cause slight softening and swelling of the coating system. The coating will however recover hardness as the cargo evaporates from the coating after unloading. The stowage time for these cargoes must not exceed 60 days. After unloading of these cargoes, the tanks must not be brought into contact with water (seawater, freshwater and cleaning water), aqueous cargoes, R1A, R1B, R2, R16, R18 or R19 cargoes before the coating is restored to its original condition. This may be obtained by actively ventilating the tank with dry air until it is in a steady state gas-free condition. Exposing to the above cannot take place within: 

  • 30 days for Tankguard HB

  • 20 days for Tankguard HB Classic

  • 10 days for Tankguard Special and Tankguard Special Ultra

  • 5 days for hot cured Tankguard Special Ultra

  • 3 days for Tankguard Flexline

 

R1A cargoes must not be carried until the coating has been in service for three (3) months (3 months after the carriage of first cargo) carrying unrestricted (R) cargoes only, or after a hot cure is done. (Please refer to the Jotun marine tank coating notes).




Last Edit: Nov 26, 2019  
1B) AGGRESSIVE CARGOES (Show Details...)   

These cargoes can cause slight softening and swelling of the coating system. The coating will however recover hardness as the cargo evaporates from the coating after unloading. The stowage time for these cargoes must not exceed 90 days. After unloading of these cargoes, the tanks must not be brought into contact with water (seawater, freshwater, cleaning water), aqueous cargoes, R1A, R1B, R2, R16, R18 or R19 cargoes before the coating is restored to its original condition. This may be obtained by actively ventilating the tank with dry air until it is in a steady state gas-free condition. Exposing to the above cannot take place within:

  • 30 days for Tankguard HB

  • 20 days for Tankguard HB Classic

  • 10 days for Tankguard Special and Tankguard Special Ultra

  • 5 days for hot cured Tankguard Special Ultra

  • 3 days for Tankguard Flexline 

 

R1B cargoes must not be carried until the coating has been in service for three (3) months (3 months after the carriage of first cargo) carrying unrestricted (R) cargoes only, or after a hot cure is done. (Please refer to Jotun marine tank coating notes).



Last Edit: Nov 26, 2019  
2) VERY AGGRESSIVE CARGOES (Show Details...)   

These cargoes can cause moderate softening and swelling of the coating system. The coating will however recover hardness as the cargo evaporates from the coating after unloading. The stowage time for these cargoes must not exceed 30 days. After unloading of these cargoes, the tanks must not be brought into contact with water (seawater, freshwater, cleaning water), aqueous cargoes, R1A, R1B, R2, R16, R18 or R19 cargoes before the coating is restored to its original condition. This may be obtained by actively ventilating the tank with dry air until it is in a steady state gas-free condition. Exposing to the above cannot take place within:

30 days for Tankguard HB

20 days for Tankguard HB Classic

10 days for Tankguard Special and Tankguard Special Ultra

5 days for hot cured Tankguard Special Ultra

3 days for Tankguard Flexline

 

R2 cargoes must not be carried until the coating has been in service for three (3) months (3 months after the carriage of first cargo), carrying unrestricted (R) cargoes only, or after a hot cure is done. (Please refer to Jotun marine tank coating notes)



Last Edit: Nov 26, 2019  
3) ANIMAL OILS, VEGETABLE OILS, FATS AND DERIVATIVES (Show Details...)   
These cargoes contain varying amounts of Free Fatty Acids (FFA) depending on type, origin, age and quality of the oil.  Solid or semi-solid types such as Palm Oil, Tallow (Lard), are transported at elevated temperatures to facilitate cargo handling. Excessively high temperatures and/or prolonged heating can cause an increase in FFA content, especially in the region around heating coils and in heat exchangers. The FFA content of oils is usually expressed as % FFA and is measured according to ASTM D – 1980.  In accordance with ASTM D – 1980 the amount of FFA in an oil is expressed as its “Acid Value”.  The Acid Value is approximately equal to 2 x the % FFA.  For example, oil with an Acid Value of 5 will have a % FFA of approximately 2.5. 

The maximum acceptable levels of FFA’s for Jotun cargo tank coatings are as follows:

Cargo Tank Coating Maximum Acceptable Acid Value (ASTM D-1980) Approximate %FFA
Tankguard Zinc 4 2%
Tankguard CPC 30 15%
Tankguard HB 30
15%
Tankguard HB Classic 30
15%
Tankguard Special
80 40%
Tankguard Special Ultra + Tankguard Flexline No Limit up to 100%


The water contained in the oil must not exceed 0.1%, as water may react with the FFA to create H3O+ which will damage the coating if the concentration is too high. No free mineral acid content is permitted. 

Certain vegetable oil derivatives such as Fatty Acid Distillates and Acid Oils have been known to contain traces of mineral acids, as well as water and free fatty acids. They are very aggressive towards coating systems. These products may only be carried provided specific approval has been given by Jotun. Please contact your local Jotun office for further information. 

End users are advised to consult FOSFA, NIOP Rules and Qualifications and EC Regulations concerning FFA levels and prior cargoes, when transporting oils in coated tanks.



Last Edit: Nov 26, 2019  
4) HYDROLYSABLE CARGOES AND AMINES (Show Details...)   

Esters, chlorinated or brominated compounds, amine cargoes and others will react with any moisture present to form aggressive by-products, which will attack the coating and/or carbon steel. Such cargoes must therefore be free from moisture and be carried in completely dry tanks, which are protected against water ingression.


The water content of these cargoes must not exceed 0.02% (200ppm).


For FAME type of cargoes, a water content of up to 300ppm combined with a maximum acid value of 0.5 is acceptable for voyages up to 5 days.



Last Edit: Nov 26, 2019  
5) CRUDE OIL AND CRUDE OIL DERIVATIVES (Show Details...)   

Crude oil and fuel oil may contain variable amounts of acidic materials, which may be detrimental to Tankguard Zinc. 


The maximum acceptable Neutralisation Number (ASTM D – 664) for these cargoes is 0.4.



Last Edit: Feb 06, 2019  
7) UNLEADED GASOLINE (Show Details...)   

Many unleaded gasoline products may have considerable amounts of oxygenated solvents added to them to improve their combustion characteristics. Methyl tert-butyl ether (MTBE) and ethyl alcohol are common additives to gasoline.

1.   The coating is fully compatible with unleaded gasoline containing MTBE as the sole oxygenated additive, provided the concentration is less than 20% by volume

2.   The coating is fully compatible with unleaded gasoline containing ethyl alcohol (ethanol) as the sole oxygenated additive, for concentrations up to 99% by volume when carried in accordance with specific note 1A

3.   The coating is fully compatible with unleaded gasoline containing methyl alcohol (methanol) as the sole oxygenated additive, for concentrations up to 20% by volume when carried in accordance with specific note 1A

4.   The coating is fully compatible with unleaded gasoline containing isopropyl alcohol (isopropanol) as the sole oxygenated additive, for concentrations up to 20% by volume when carried in accordance with specific note 1A

For unleaded gasoline containing additives different to the above, different concentrations or mixtures, JOTUN must be consulted for specific advice.



Last Edit: Feb 06, 2019  
8) COATING DISCOLOURATION (Show Details...)   
The coating may be discoloured by this cargo. The discolouration will not affect the resistance of the coating, but may make tank cleaning more difficult, and also increase the risk of contaminating subsequent cargoes. See also section VIII in the general notes. 

Last Edit: Feb 06, 2019  
9) ZINC PICK-UP (Show Details...)   

Certain cargoes are very sensitive to the presence of zinc particles, which could possibly be picked up during transportation in zinc coated tanks. Small particles of zinc picked up by the cargo will have no effect on the Tankguard Zinc, but may affect the quality of the cargo.



Last Edit: Nov 08, 2017  
11) pH SENSITIVE CARGOES (Show Details...)   

Products in this class can be transported when the pH is within the range 5.5 - 10.0.



Last Edit: Feb 06, 2019  
12) MOLASSES (Show Details...)   

Molasses may be carried in tanks coated with Tankguard Zinc if the pH of the cargo is between 5.5 – 10.0.  The pH of molasses may decrease during transportation due to fermentation.



Last Edit: Feb 06, 2019  
14) PHENOL AND CRESOLS (Show Details...)   

Tankguard Zinc is resistant to Phenol and Cresols provided the coating has been in service for at least 3 months.



Last Edit: Feb 06, 2019  
16) EXTREMELY AGGRESSIVE CARGOES (Show Details...)   

These cargoes can cause moderate softening and swelling of the coating system. The coating will however recover hardness as the cargo evaporates from the coating after unloading. The stowage time for these cargoes must not exceed 30 days (except for 1,2-dichloroethane (EDC) and acrylonitrile, where 60 days can be accepted for Tankguard Special Ultra and 90 days for Tankguard Flexline). After unloading of these cargoes, the tanks must not be brought into contact with water (seawater, freshwater, cleaning water), aqueous cargoes, R1A, R1B, R2, R16, R18 or R19 cargoes before the coating is restored to its original condition. This may be obtained by actively ventilating the tank with dry air until it is in a steady state gas-free condition. Exposing to the above cannot take place within:

10 days for Tankguard Special

5 days for Tankguard Special Ultra

3 days for Tankguard Flexline

Methyl alcohol (methanol) cargo must be pure (contamination with acetaldehyde, formaldehyde, formic acid, acetone and acetic acid should be below 30 ppm per contaminant). The methyl alcohol should be "water free" (maximum permissible water 0.020 % or 200 ppm). Samples of the methyl alcohol must be taken prior to both loading and discharge. The sample must be sealed, properly marked and dated and retained on board for a minimum of 6 months after discharge of the methyl alcohol cargo.

 

Prior to carriage of these cargoes, the coating must be hot cured within 3 months in service (3 months after the carriage of first cargo) whilst carrying unrestricted (R) cargoes only. 

 

Hot cure must be carried out for these cargoes, and cannot be substituted by post curing, i.e. three (3) months in service.


(Please refer to Jotun marine tank coating notes)



Last Edit: Nov 26, 2019  
18) TANKGUARD SPECIAL ULTRA; METHYL ALCOHOL, ETHYL ALCOHOL AND VINYL ACETATE (Show Details...)   

These cargoes can cause moderate softening and swelling of the coating system. The coating will, however, recover hardness as the cargo evaporates from the coating after unloading. After unloading of these cargoes, the tanks must not be brought into contact with water (seawater, freshwater, cleaning water), aqueous cargoes, R1A, R1B, R2, R16, R18 or R19 cargoes before the coating is restored to its original condition. This may be obtained by actively ventilating the tank with dry air until it is in a steady state gas-free condition. Exposing to the above cannot take place within:

  • 5 days for Tankguard Special Ultra 

Methyl alcohol (methanol) cargo must be pure (contamination with acetaldehyde, formaldehyde, formic acid, acetone and acetic acid should be below 150 ppm per contaminant). The methyl alcohol should be "water free" (maximum permissible water 0.10 % or 1000 ppm). Samples of the methyl alcohol must be taken prior to both loading and discharge. The sample must be sealed, properly marked and dated and retained on board for a minimum of 6 months after discharge of the methyl alcohol cargo.

 

Prior to carriage of these cargoes, the coating must be hot cured within 3 months in service (3 months after the carriage of first cargo) whilst carrying unrestricted (R) cargoes only. Hot cure must be carried out for these cargoes, and cannot be substituted by post curing, i.e. three (3) months in service. If a hot cure is not carried out, note 2 apply. (Please refer to Jotun marine tank coating notes)

 





Last Edit: Nov 26, 2019  
19) TANKGUARD FLEXLINE; METHYL ALCOHOL, ETHYL ALCOHOL AND VINYL ACETATE (Show Details...)   

These cargoes can cause moderate softening and swelling of the coating system. The coating will, however, recover hardness as the cargo evaporates from the coating after unloading. After unloading of these cargoes, the tanks must not be brought into contact with water (seawater, freshwater, cleaning water), aqueous cargoes, R1A, R1B, R2, R16 or R19 cargoes before the coating is restored to its original condition. This may be obtained by actively ventilating the tank with dry air until it is in a steady state gas-free condition. Exposing to the above cannot take place within:

 3 days for Tankguard Flexline

Methyl alcohol (methanol) cargo must be pure (contamination with acetaldehyde, formaldehyde, formic acid, acetone and acetic acid should be below 150 ppm per contaminant). Methyl alcohol should be "water free" (maximum permissible water 0.10 % or 1000 ppm). Samples of the methyl alcohol must be taken prior to both loading and discharge. The sample must be sealed, properly marked and dated and retained on board for a minimum of 6 months after discharge of the methyl alcohol cargo.




Last Edit: Nov 26, 2019  
100ppm) ADDITIVE (Show Details...)   
This additive is compatible with the coating provided the final addition is 100 ppm or less

Last Edit: Apr 30, 2019  
20) SODIUM- AND POTASSIUM HYDROXIDE (Show Details...)   
Maximum allowable concentration is 50% for storage temperatures up to 60deg C.

Last Edit: Aug 29, 2019  
500ppm) ADDITIVE (Show Details...)   
This additive is compatible with the coating provided the final addition is 500 ppm or less

Last Edit: Apr 30, 2019  
1000ppm) ADDITIVE (Show Details...)   
This additive is compatible with the coating provided the final addition is 1000 ppm (0.10%) or less

Last Edit: Apr 30, 2019  


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