The BIMCO Liquid Cargo database is intended for use by for shore-side staff and to some extent for newcomers to the tanker trade and should only be used as a reference tool providing brief information regarding the more than 360 of the commonly transported liquid cargoes including Tall Oil, Crude.
Trade name/synonym name:
Tall oil; Tallol; Liquid Rosin; Crude talloil; Sylvablend.
Main Properties
Tank cleaning after this cargo is problematic. This cargo is considered a drying or semi-drying oil. Do not allow cargo residues to dry on tank bulkheads or tanktop.
Main chemical and physical properties:
Flash point More than 180 deg. C
Boiling Points Not available
Viscosity @ 20°C Not available but probably more than 50 mPa.s
Vapour pressure @ 20°C < 5 kPa
Density varies from shipment to shipment. Often around 950 kg/m3 or higher at 60 deg. C.
IBC carriage requirements:
IBC chapter 17
Ship Type 2
Tank Type 2G
Relevant additional IBC requirements 15.19.6 high-level alarm.
16.2.6 the cargo's viscosity at 20 deg. C shall be specified on a shipping document. If the cargo's viscosity exceeds 50 mPa.s at 20 deg. C, the temperature at which the cargo has a viscosity of 50 mPa.s shall be specified in the shipping document.
MARPOL Requirements:
Annex II
Pollution Category Y
Special information to be added to Shipping Document, the cargo's viscosity at 20 deg. C shall be specified on a shipping document. If the cargo's viscosity exceeds 50 mPa.s at 20 deg. C, the temperature at which the cargo has a viscosity of 50 mPa.s shall be specified in the shipping document.
Cargo tank material:
Stainless steel Yes
Epoxy No/Yes, so please check
Zinc No.
Stowage:
Heat adjacent Yes
Stow adjacent to fuel oil tanks Yes
Carriage requirements:
Heating during voyage 40 - 55 deg. C
Heating during unloading 60 deg. C
Tanks inerted or padded Not required by IBC code.
Prewash required when cargo's viscosity at unloading temperature exceeds 50 m.Pa.s.
Tank cleaning:
This cargo is considered a drying or a semi-drying oil. Tank cleaning should be initiated as soon as possible after unloading, if port regulations allows, and it is recommended to keep the tank(s) wet between end of stripping to the commencement of the tank cleaning.
Ambient or moderate temperature water wash in order to remove most of the cargo residues. (The low temperature because the product is considered as a drying or semi-drying oil)
Hot temperature water wash
Inject or recirculate suitable tank cleaning chemical
Hot temperature water wash again
Ambient temperature fresh water rinse.
Fire: Use foam or water spray - not water jet
Spillage: Collect small spills with absorbent material. Larger spills: Try to collect and transfer to spill tank or wash away with water. When in port, - inform Port Authority
First aid: Remove victim to fresh air. Follow first aid instructions in MSDS. Consider obtaining advice from Radio Medical
Hazards (Occupational safety etc): Tall oil, crude is a mixture of rosin acids, fatty acids, and other materials obtained by acid treatment of the alkaline liquors from the digesting (pulping) of pine wood. The spent black liquor from the pulping process is concentrated until the sodium salts (soaps) of the various acids separate out and are skimmed off. These are acidified by sulfuric acid
Composition and properties vary widely, but average 35–40% rosin acids, 50–60% fatty acids.
Precautions
Ensure proper line clearing after completion of loading to prevent solidification of line system
Ask for charterer’s specific requirements, some grades are heated and some are carried ambient. Daily temperature logs to be maintained and/or as per charterer’s instructions
Heating of cargo is important. Check for cargo sediments in tank before arrival port of unloading. Recirculation of cargo during voyage may be required
Some terminals/administrations will require Tall oil, crude to be handled as a pollution category X cargo.
Remarks
Crude Tall Oil (CTO) is a mixture of rosin acids, yellow oily liquid with strong acid odor. It requires heat, therefore proper heating instructions must be obtained from charterer. If cargo is not circulated, it may leave lots of sediments on floors and bulkheads, sometimes solids which will have to be collected manually before continue washing. Due to the nature of the cargo, it may affect the tank radar or pressure gauging systems and manual gauging may be required.
Use: Paint, alkyd resins, soaps, cutting oils and emulsifiers, driers, flotation agents, oil-well drilling muds, core oils, lubricants and greases, asphalt derivatives, rubber reclaiming, chemical intermediates.
The BIMCO Liquid Cargo Database contains information for more than 360 cargoes, all updated to the IBC Code 2021 amended requirements, but in order to ensure that the BIMCO Liquid Cargo Database information is kept updated, we highly welcome any feedback in the form of comments, response, information or data regarding a specific cargo.
