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Oil spill dispersant

 

SLICKGONE NS

HIGH EFFICIENCY CONCENTRATE

OIL DISPERSANT

 

SLICKGONE NS is one of the world’s best selling Type 2/Type 3 dispersant concentrates and is

exceptionally efficient on a broad spectrum of oils. Unlike many other dispersants, SLICKGONE NS even

gives excellent results on high wax content crudes.

 

SLICKGONE NS is also more effective than most dispersants on heavy oils and water-in-oil emulsions

(chocolate mousses).

 

SLICKGONE NS meets the stringent efficiency and toxicity requirements of the UK MARINE MANAGEMENT

ORGANISATION.

 

SLICKGONE NS is also approved/accepted in many other countries. Please consult DASIC International for

an updated list of approvals/acceptances.

 

SLICKGONE NS is highly effective at emulsifying crude oils, fuel oils and water-in-oil emulsions even at

low temperatures, producing oil droplets minute enough to be retained beneath the sea surface where

they are rapidly diluted by subsurface mixing and are eventually biodegraded by microorganisms.

APPLICATION METHODS

AT SEA

SLICKGONE NS has been developed for use undiluted and is most effective applied in this way. It is,

however, compatible with seawater and can be used diluted to 10% with good results.

Extensive field trials in the UK indicate that an effective treatment rate for dispersants is approximately 1

part dispersant to 20-30 parts of oil. If the average thickness of the oil slick is 0.1mm, then an application

rate of 3-5 imp. gal./acre (30-50 litres/hectare) is required. Slicks, however, tend not to be uniform and

thicknesses can vary from microns to several millimetres. It is important, therefore, to try to estimate the

thickness of the oil being treated at any given moment and adjust the treatment rate accordingly.

 

FROM AIRCRAFT

Dispersant should be applied to the slick from suitable spray booms in the form of a spray with a volume

median diameter of approximately 500 microns. A spray such as this gives good uniform coverage,

avoids excessive windborne losses, and prevents falling droplets from achieving sufficient momentum to

penetrate the oil and become lost to the underlying water.

 

FROM BOATS

SLICKGONE NS is best applied undiluted provided that suitable spray equipment is available.

Using older type spray equipment, SLICKGONE NS can be diluted in the application equipment with 9 parts

seawater to form a 10% solution. This solution should be sprayed at a treatment rate of 1 part diluted

dispersant to 2-3 parts of oil. The efficiency loss on dilution of dispersant is partly compensated for by the

use of breaker boards to provide energy to emulsify the oil.

Details of suitable spray equipment are available from DASIC.

 

ON BEACHES

SLICKGONE NS is extremely effective applied undiluted on beaches, rocks, harbour walls, etc. It should be

applied at a treatment rate of approximately 1 part dispersant to 10 parts of oil in a fine spray such as from

a knapsack sprayer or from other beach spraying equipment.

If possible, SLICKGONE NS should be applied approximately 10-30 minutes before an advancing tide so

that the surf line provides energy to disperse the oil. If the energy of the surf line is insufficient, then fire

hoses can be directed on to the water adjacent to the beach to provide additional energy.

 

HEALTH AND SAFETY INFORMATION

SLICKGONE NS is of low toxicity and irritancy. However, as with all emulsifiers, contact with the eyes and

prolonged contact with skin should be avoided. The wearing of protective goggles is recommended. Avoid

breathing spray mists or product vapours. SLICKGONE NS will support combustion and should be kept

away from sources of ignition.

Consult the DASIC safety data sheet on this material before use.

 

SLICKGONE NS

HIGH EFFICIENCY CONCENTRATE

OIL DISPERSANT

TYPICAL PROPERTIES

1.pH                                                                       Neutral

2. Specific Gravity                                                0.86 at 20C

3. Viscosity (Viscometers UK)                           30-60 cP at 0C

4. Flash Point (PMCC)                                         71C

5. Corrosivity                        Test                         168 hours total immersion at ambient temperature

Test                         limits + 1.0mg, - 5.0mg

Test pieces            75mm x 25mm x 0.91mm

Magnesium (B.S.3370, type AZ31)                                                                    -0.3mg

Aluminium (B.S.L165, acid chromate pickled)                                                -0.1mg

Steel (B.S.1449, CRIFF, burnished)                                                                    -0.1mg

Cadmium plated steel (B.S.1449 plated to Def Stan 03-19)                         -0.7mg

Copper (B.S.899, C104 H pickled to DTD901F)                                             +0.2mg

6. Storage Life                                                      Conforms to the UK, LR448 (OP) specification when

stored in supplier’s original unopened containers.

7. Efficiency                                                           Efficiency tests were carried out according to the LR448

revolving flask technique using a standard medium fuel oil,

a heavy oil and on mixtures of these fuel oils with kerosene

to adjust the viscosity.

Summary of Test                 0.2mls of dispersant is added dropwise into 5ml of oil on to the surface of

seawater at 10C contained in a conical separating funnel. The separating funnel is

rotated for 2 minutes at 33 rev./min. then stopped and unstoppered. After 1 minute

standing time 50ml of oily water is run off through the bottom tap. The oil is then

extracted and the amount present is expressed as a percentage of the oil that

would be present if it were uniformly distributed throughout the water at the time of

sampling (efficiency index).

Results                                   See graph.

 

EFFICIENCY TEST RESULTS - SLICKGONE NS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 







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