Romax7300[1]

?2002, Rohm and Haas Company PHYSICAL AND CHEMICAL PROPERTIES

(these do not constitute specifications)

Aspect Clear solution*

Chemical nature Carboxylate copolymer Grade

partial Na salt

(20% neutralized)Average molecular weight 3500 (Mw)

T otal solids (%)≈ 50

pH as is (at 25 °C)≈ 3.6

Bulk density (at 25 °C)≈ 1.25

Viscosity Brookfield ≈ 1500

(mPa.s at 25 °C)

* A slight haze may appear, this does not affect the intrinsic properties of the

product or its performance.

ROMAX?OILFIELD POLYMERS

CHEMISTRY AND MECHANISM OF ACTION

ROMAX? 7300 is a low molecular weight carboxylate

copolymer which combines excellent precipitation

inhibition and dispersing activity in the same polymer

through at least three mechanisms:

? Solubility enhancement by threshold effect, which

reduces precipitation of low solubility inorganic salts.

? Crystal modification, which deforms the growing

inorganic salt crystal to give small, irregular, readily

fractured crystals that do not adhere well to surfaces

and can be easily removed during cleaning operations.

? Dispersing activity, which prevents precipitated crys-

tals or other inorganic particles from agglomerating

and depositing on surfaces.

ANTI-PRECIPIT A TION PERFORMANCE ROMAX? 7300 polymer is a highly effective anti-precipitant for barium and calcium sulphates, calcium carbonate and calcium phosphate. In addition, it gives excellent dispersancy for most of the inorganic parti-culates.APPLICATIONS ? Industrial water treatment:- Scale inhibition and dispersant in open recirculating cooling circuits - Dispersant for boiler sludge control ? Oil field water treatment:- Scale inhibition in top side equipment - Scale build-up prevention downhole in se-condary oil recovery where barium sulphate, calcium sulphate and calcium carbonate are a major problem.BENEFITS OF ROMAX? 7300- Contains no phosporus, making its use acceptable where legislation requires that discharge waters con-tain low or no phosporus.- Has excellent thermal and hydrolic stability and can be formulated at any pH without degradation.- Exhibits exceptional stability in the presence of hypochlorite.- Shows a good ability to remain soluble in presence of high level of calcium. Its calcium tolerance is better than acrylic homopolymers.- Offers a strong dispersant activity contrarily to phos-phonates.TEST METHOD ROMAX? 7300 may be analyzed at use concentration with the Hach polyacrylate test kit. This kit employs a patented method developed by Rohm and Haas.

ROMAX? 7300

Scale Inhibitor/Dispersant

STORAGE RECOMMENDATION

Freezing or long term cold storage of ROMAX? 7300

may cause some separation of the components.

Although product performance is not impaired as long

as the whole container is heated and well mixed, it is

recommended to keep ROMAX? 7300 out of free-

zing.

SAFE HANDLING INFORMATION

? Caution : - Contact may cause eye irritation and slight

skin irritation.

? First aid measures

-Contact with skin: wash skin thoroughly with soap

and water.Remove contaminated clothing and laun-

der before rewearing.

- Contact with eyes: flush eyes with plenty of water

for at least 15 minutes and then call a physician.

- If swallowed: if victim is conscious, dilute the liquid

by giving the victim water to drink and then call a

physician.If the victim is unconscious, call a physi-

cian immediately.Never give an unconscious person

anything to drink.

TOXICOLOGICAL INFORMATION

? Acute data: data for a compositionally similar ma-

terial are listed below.

- Oral LD50 - rat : > 5000 mg/kg.- Dermal LD50 - rabbit : > 5000 mg/kg.

- Eye irritation - rabbit : no irritation.

- Skin irritation - rabbit : slight irritation.

? Mutagenicity data: data for a compositionally similar

material are listed below.- Ames mutagenicity: Negative ? Sensitization data: data for a compositionally similar material are listed below.- Skin sensitization data: guinea pig: no adverse effects observed.ENVIRONMENTAL INFORMATION ? Environmental toxicity:data are for a composi-tionally similar material.- Rainbow trout (salmo gairdneri), 96 hour LC 50 static : 1000 mg/l.- Daphnia magna, 48 hour EC 50 static : > 1000 mg/l.- Zebra fish, 96 hour EC 50: >100 mg/l.- Algae, 96 hour EC 50: 6.3 to 68 mg/l.REGULATORY INFORMATION ? USA: All components of this product are in com-pliance with the inventory listing requirements of the U.S. Toxic Substance Control Act (TSCA) chemical Substance Inventory.? EEC: This product satisfies all the requirements of the European Inventory of Existing Chemicals Substances (EINECS).MATERIAL SAFETY DATA SHEETS Rohm and Haas company maintains Material Safety Data Sheet (MSDS) on all of its products. These con-tain important information that you may need to pro-tect your employees and customers against any known health and safety hazards associated with our pro-ducts. We recommend you obtain copies of MSDS for our products from your local Rohm and Haas techni-cal representative or the Rohm and Haas company. In addition, we recommend you obtain copies of MSDS

from your suppliers of other raw materials used with our products.

More information on the web about our products and services

and all our worldwide addresses:

https://www.wendangku.net/doc/d615292551.html,

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 user determines the suitability of our materials and suggestions before adopting them on a com-mercial 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 understood as 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.

ROMAX ?is a registered trademarks of Rohm and Haas Company or of its subsidiaries or affiliates.

July 2002

ROMAX 7300.PDS.E.ER.07/2002.