عدد المساهمات : 3484
تاريخ التسجيل : 15/09/2009
العمر : 49
الموقع : مصر
|موضوع: (1)rohm &hass chemicals for water treatment الإثنين نوفمبر 09, 2009 3:43 pm|| |
SEA-NINE™ 211N Marine Antifouling Agent
SEA-NINE 211N marine antifouling agent is a rapidly biodegradable settlement inhibitor, developed by Rohm and
Haas for the new generation of environmentally acceptable marine antifouling paints for ships and marine
Key Features and Benefits
• Highly effective antifouling agent against bacterial slime, algae, barnacles, tubeworms, hydroids, bryozoa,
tunicates and diatoms
• Free from heavy metals
• Excellent long term efficacy
• Stable in all major types of marine coating systems
• Global registrations including BPD notification and support
• Global environmental acceptance and compatibility
Key Environmental Characteristics
• Rapid degradation of the antifouling agent in the environment
• Rapid environmental partitioning, resulting in a limited bioavailability to non-target organisms
• Acceptable risk to non-target organism at concentrations presents in the environment
• Minimal bioaccumulation of toxicologically significant compounds
• Non-hazardous environmental concentrations at recommended use levels
For its environmental properties, SEA-NINE 211N gained the first ever Green Chemistry Challenge Award in the
category for Designing Safer Chemical Products awarded by the United States Environmental Protection Agency.
SEA-NINE 211N marine antifouling agent is a 30% solution of 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one in mixed
xylenes SEA-NINE 211N is stable for at least two years at 22-25°C and 6 months at 40°C.
Fouling of ships by marine organisms (barnacles, seaweed, algae) is a phenomenon, which, if not prevented
proves costly to the ship operators, because of the increased fuel consumption necessary to overcome the drag,
and detrimental to the environment, because of the effects (global warming, acid rain) of the extra fuel consumed.
These properties are typical but do not constitute specifications.
Appearance clear, yellowish liquid
Flashpoint (closed cup) 28°C (solvent)
Vapour pressure 5.0 mmHg at 16°C
Boiling point 138-144°C
Melting or freezing point -3°C
Density at 25°C 1.28 g/ml
Viscosity (Brookfield) at 20° 1.2 cps
Colour, Gardner (VCS) 6
SEA-NINE 211N is highly effective at controlling a wide range of fouling organisms while having an acceptable
environmental risk at recommended use concentrations. SEA-NINE 211N works by interfering with the
microorganism settlement process thus preventing the initial colonisation of the painted surface. It has a broad
spectrum activity against bacterial slime, algae, barnacles, tubeworms, hydroids, bryozoa, tunicates and diatoms.
Use of SEA-NINE 211N containing paints prevents the fouling of treated surfaces and eliminates the associated
costs of increased fuel usage and more frequent dry docking for repainting.
SEA-NINE 211N Antifouling Agent can be used in all types of Antifouling Paints such as: self-polishing antifouling
paints as well as soluble or insoluble matrix paints.
SEA-NINE 211N Antifouling Agent can be applied to:
• Ship hulls (building and maintenance/repair)
• Commercial vessels and super yachts
• Buoys and other offshore structures
SEA-NINE 211N Antifouling Agent is recommended for use in:
• Marine (deep sea) and brackish/Estuarine
• Commercial harbors, shipping lanes, open sea
Conditions of Application: professional and industrial users only
• No use by the general public in Do-It-Yourself applications
• Application by airless spraying and by brushing/rolling
• Removal by high pressure water jet and blasting
Safety and Handling
Since antimicrobial products are, by definition, biologically active, they invariably have the potential to induce
toxicological effects in humans. It is, therefore, essential to take precautions to prevent skin or eye contact,
ingestion or direct inhalation of such products. Indeed, the procedures used for handling microbicide solutions will
be very similar to those necessary for the use of concentrated acids and alkalis.
Efficacy of SEA-NINE 211N
Organism MIC (ppm a.i.) Organism MIC (ppm a.i.)
Diatoms Marine Bacteria
Amphora coffeaeformis 0.4 Pseudomonas atlantica 0.1
Amphipora paludosa 8 Pseudomonas nautical 0.1
Navicula incerta 0.05
Freshwater Green Algae Freshwater Blue Green Algae
Chlorella pyrenoidosa 0.06 Anabaena flos-aquae 0.3
Chlorococcum oleofaciens 1.0 Synechococcus leopoliensis 0.6
Scendesmus quadricuada 1.3 Nostoc commune 0.6
Ulothrix acuminata 0.6 Scytonema hofmanni 0.6
Microcyctis aeruginosa 0.6
Marine Algae Barnacles LC50 (ppm a.i.)
Enteromorpha intestinalis 0.1 Balanus amphitrite 0.34
Ectocarpus siliculosis 0.2 Balanus amphitrite
On those limited occasions where personnel are required to handle SEA-NINE 211N Antifouling Agent as received,
they should always wear appropriate protective clothing. This will include a rubber apron or impervious jacket with
apron, suitable impervious, chemical resistant, full length gloves (nitrile rubber, Viton* or Silver Shield**) and
footwear. Protective chemical splash goggles should also be worn. In areas where there is poor ventilation it is
recommended that for the commercial handling of SEA-NINE 211N Antifouling Agent, as supplied, respiratory
protection should be employed using a respirator which incorporates a charcoal cartridge for the adsorption of
organic vapours (associated with the solvent in SEA-NINE 211N Antifouling Agent).
*Viton is a trademark of E.I. Dupont de Nemours & Co.
** Silver Shield 1s a trademark of Norfoll
Special care should be taken to avoid contamination of surfaces or materials that may later be handled by
unprotected personnel (for example door handles and taps). Should such incidental contamination take place then
decontamination of the affected surfaces should be carried out.
After working with SEA-NINE 211N Antifouling Agent, personnel should wash thoroughly with soap and water.
These recommendations are especially applicable before eating, drinking or smoking. All clothing that may have
been contaminated with SEA-NINE 211N Antifouling Agent should be laundered in hot water with detergent and
bleach before it is used again.
Suitable materials for contact with SEA-NINE 211N antifouling agent
When setting up handling equipment for use with SEA-NINE 211N Antifouling Agent, any of the following materials
may be used for piping, tank linings, fittings and instruments, since all have been found to be compatible.
- Fluorinated high density polyethylene
- Fibreglass reinforced vinyl ester resin (Derakane 470a)
- PTFE-lined steel: Glass-lined steel, Polyethylene terephthalate (PET), Teflonb
SEA-NINE 211N Antifouling Agent should not come in contact with low density polyethylene, as it can cause
softening. SEA-NINE 211N Antifouling Agent is corrosive to uncoated mild and stainless steel and consequently
should not come into contact with tanks or pipes of these materials.
a Derakane is a trade mark of Dow Chemical Co.
b Teflon is a trademark of E.I. Dupont de Nemours & Co.
Assessed marine antifouling applications
Rohm and Haas has conducted Risk Assessment studies on antifouling paint application and has established the
following appropriate Risk Management Practices which should be carefully followed.
• When handling SEA-NINE 211N Antifouling Agent as received, follow instructions on the label and MSDS
• Avoid skin contact with antifouling paint containing typical use concentrations of SEA-NINE 211N
• Personnel handling formulated products that contain SEA-NINE 211N Antifouling Agent should use
protective clothing detailed below:
- cotton or disposable coverall suit (Tyvek* or similar chemical resistant types are ideal) with snug-fitting
wrists, neck and ankles
- rubber or other chemical resistant boots
- solvent resistant synthetic rubber gloves (nitrile rubber or neoprene types are ideal). These gloves should
be capable of covering the wrist
- splash goggles
Additionally the following protective clothing is recommended to be worn by those people spray-applying
antifouling paints containing SEA-NINE 211N Antifouling Agent to ships in drydock.
- head covering which will cover all exposed skin including lower chin, cheeks and forehead (a Tyvek* cape
would be the ideal choice).
Goggles and head covering could alternatively be replaced by an air feedhood.
It is recommended that if disposable items of clothing are used then they should he discarded after use and that
new articles be used when new spraying work is begun. Clothing requirements are constantly being reviewed and
these may become less stringent as more data is gathered.
*Tyvek is a trademark of E.1.Dupont de Nemours & Co.
Recommended Use Rates
SEA-NINE 211N Antifouling Agent is highly effective at controlling a wide range of fouling organisms while having
an acceptable environmental risk at recommended use concentrations. SEA-NINE 211N Antifouling Agent has a
very broad spectrum of activity and when used in combination with cuprous oxide, it provides an excellent, costeffective
system, giving protection against all types of fouling organisms. Under normal use patterns
concentrations of 3-10% of SEA-NINE 211N Antifouling Agent (as sold, 1-3% in active ingredient) are sufficient in
Storage Conditions and Containers
SEA-NINE 211N Antifouling Agent has good thermal stability. It is however recommended that it is kept in an area
approved for the storage of inflammable industrial chemicals, with containers stored upright in a well ventilated
area and not exposed to extremes of temperature. Storage conditions should be in conformance with applicable
legal, fire and insurance regulations.
SEA-NINE 211N Antifouling Agent is supplied in 190 kg drums.
Material Safety Data Sheets
Rohm and Haas Material Safety Data Sheets (MSDS) contain pertinent information that you may need to protect
your employees and customers against any known health or safety hazards associated with our products. Under
the principles of Product Stewardship and some government regulations (for example, the US OSHA Hazard
Communication Standard), workers must have access to and understand MSDS on all hazardous substances to
which they are exposed. Thus, it is important that you provide appropriate training and information to your
employees and make sure they have available to them MSDS on any hazardous products in the workplace.
Upon initial shipment of all products (including samples), Rohm and Haas Company sends the appropriate MSDS to
the recipient. If you do not have access to one of these MSDS, please contact your local Rohm and Haas
representative for a copy. Updated MSDS are sent upon revision to all customers of record.
Rohm and Haas Company is a member of the America Chemistry Council (ACC) and is committed to the ACC’s
Responsible Care® Program.
Use biocides safely. Always read the label and product information before use.
SEA-NINE 211N is a trademark of Rohm and Haas Company, or of its subsidiaries or affiliates. The company’s policy is to register its
trademarks, where products hereby are marketed by the Company, its subsidiaries or affiliates.
These suggestions and data are based on information we believe to be reliable. They are offered in good faith, but without guarantee, as
conditions and methods of use of our products are beyond our control.
We recommend that the prospective users determine the suitability of our materials and suggestions before adopting them on a commercial
Suggestions for uses of our product or the inclusion of descriptive material from patents and the citation of specific patents in this publication
should not be understood as recommending the use of our products in violation of any patent or as permission or license to use any patent
of the Rohm and Haas Company.
©Rohm and Haas, 2006 All rights reserved. December 2006