ACUMER®MINING POLYMERS

ACUMER® 9300Dispersant Polymer for Mineral Slurries

CHARACTERISTICS(These figures are typical values and should not be considered asspecifications).

Aspect clear solution*

Chemical nature acrylic homopolymer

Grade sodium salt

Average molecular weight 4500 (Mw)3000 (Mn)

Total solids (%) ~45

pH as is (at 25°C) ~7

Bulk density (at 25°C) ~1.32

Viscosity Brookfield (mPa.s at 25°C) ~600

*A slight haze may appear, this does not affect the intrinsicproperties of the product or its performance.

- Calcium carbonate- Kaolin clay- Titanium dioxide- Talcum- Aluminium hydroxide...

STORAGE RECOMMENDATION

Freezing or long term cold storage of ACUMER®

9300 may cause some separation of the components.Although product performance is not impaired aslong as the whole container is heated and well mixed,it is recommended to keep ACUMER® 9300 out offreezing.

SAFE HANDLING INFORMATION

• Caution : - Contact may cause eye irritation andslight skin irritation.

• First aid measures :

- Contact with skin : wash skin thoroughly with soapand water. Remove contaminated clothing andlaunder before rewearing.

- Contact with eyes: flush eyes with plenty of waterfor at least 15 minutes and then call a physician.

- If swallowed : if victim is conscious, dilute the liq-uid by giving the victim water to drink and thencall a physician. If the victim is unconscious, call aphysician immediately. Never give an unconsciousperson anything to drink.

• Toxicity : - Acute oral (LD50) rats : > 5g/kg.

MATERIAL SAFETY DATA SHEETS

Rohm and Haas Company maintains Material Safety DataSheets (MSDS) on all of its products. These containimportant information that you need to protect youremployees and customers against any known health andsafety hazards associated with these products.

We recommend you obtain copies of MSDS for ourproducts from your local Rohm and Haas technical rep-resentative or the Rohm and Haas Company. We alsosuggest that you contact your supplier of other materialsrecommended for use with our products for the appro-priate health and safety precautions before using them.

CHEMISTRY AND MECHANISM OF ACTION

ACUMER® 9300 is the sodium salt of a polyacrylic acidselected for optimizing the factors affecting dispersancy :

- polymer molecular weight- polymer composition- polymer structure- mode of surface adsorption

DISPERSION PERFORMANCE

Without dispersant, the particles in a slurry aggregateresulting in an unstable slurry with unacceptablehigh viscosity.

ACUMER® 9300 mining polymer stabilizes highsolids slurries and allows lowering the viscosity to rel-atively low levels at the time of initial formulation andmaintains a low viscosity during storage.

DOSAGE

ACUMER® 9300 is effective at low dosage between 0.2to 0.6 % polymer solids on slurry solids depending onthe nature of the slurry and on the grinding (coarseor fine particles).

APPLICATIONS

ACUMER® 9300 can be used efficiently for the dis-persion of different slurries

ACUMER® 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 designatedthereby 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 ofour products are beyond our control.We recommended that the prospective user determine the suitability of our materials and suggestions before adopting them on acommercial scale.

Suggestions for uses of our products or the inclusion of descriptive material from patents and the citation of specific patents in this publication should not be understoodas recommending the use of our products in violation of any patent or as permission or license to use any patents of the Rohm and Haas Company.

© 2001. Rohm and Haas Company. Printed in France POLY.ACUMER9300.TDS.ER.E.05/2001

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