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COREXIT® EC9500B

TECHNICAL PRODUCT BULLETIN #D-19
USEPA, OEM REGULATION AND POLICY DEVELOPMENT DIVISION
ORIGINAL LISTING DATE: AUGUST 1, 2013
"COREXIT® EC9500B"


I. NAME, BRAND, OR TRADEMARK
COREXIT® EC9500B
Type of Product: Dispersant

II. NAME, ADDRESS, AND TELEPHONE NUMBER OF MANUFACTURER/CONTACT
Nalco Environmental Solutions LLC
7705 Highway 90-A
Sugar Land, TX 77478
Product Management:
Office: (281) 263-7709
Mobile: (832) 851-5164
E-mail: debby.theriot@nalco.com
(Ms. Debby Theriot)

III. NAME, ADDRESS, AND TELEPHONE NUMBER OF PRIMARY DISTRIBUTORS
Nalco Environmental Solutions LLC
7705 Highway 90-A
Sugar Land, TX 77478
Product Management:
Office: (281) 263-7709
Mobile: (832) 851-5164
E-mail: debby.theriot@nalco.com
(Ms. Debby Theriot)

IV. SPECIAL HANDLING AND WORKER PRECAUTIONS FOR STORAGE AND FIELD APPLICATION
1. Flammability:
DOT HazMat Classification – This product meets the criteria for classification as a Class 3 combustible liquid (49 CFR §173.120(b)(1)). However, it does not contain combustion, and, therefore, is not subject to the requirements for the Hazardous Materials Regulations (49 CFR §173.120(b)(3)).
2. Ventilation:
Use with adequate ventilation equal to unobstructed outdoors in moderate breeze.
3. Skin and eye contact; protective clothing; treatment in case of contact:
Do not get in eyes, on skin, or on clothing. In case of eye contact, rinse immediately with plenty of water and seek medical advice promptly. In case of skin contact, wash immediately with plenty of soap and water. If irritation persists or symptoms develop, seek medical attention. If clothing is contaminated, remove clothing and thoroughly wash the affected area. Do not take internally. In the event of oral ingestion, do not induce vomiting (can cause chemical pneumonia if aspirated into lungs). If conscious, wash out mouth and give water to drink. Get medical attention. If inhaled, remove to fresh air, treat symptomatically. Get medical attention.
For open systems where contact is likely, wear Tyvek, chemical resistant gloves (e.g., nitrile), and chemical splash goggles. Where concentrations in air may be high (e.g., confined area), the use of a half face filter mask or air supplied breathing apparatus is recommended.
4.a. Maximum storage temperature: 170ºF
4.b. Minimum storage temperature: 40ºF
4.c. Optimum storage temperature range: 40ºF to 100ºF
4.d. Temperatures of phase separations and chemical changes: No phase changes or chemical reactions are anticipated in the minimum to maximum storage range. Below 40°F, surfactant may slowly precipitate out of the solution, but it will return back into solution when warmed.

V. SHELF LIFE
The shelf life of unopened drums of COREXIT® EC9500B is potentially unlimited when containers remain capped and sealed to prevent contamination and evaporation of solvents. Testing of COREXIT® EC9500B is recommended every five years to ensure it remains fit for its intended purpose.

VI. RECOMMENDED APPLICATION PROCEDURE
1. Application Method:
For aerial spraying, apply COREXIT® EC9500B undiluted. Various fixed-wing aircraft or helicopters can be used for spraying over a large area, from an altitude of 30 to 50 feet or even higher, depending on the application equipment and aircraft. Typical application altitudes of 30 to 50 feet have been used, although higher altitudes may be effective under certain conditions. Actual altitudes will depend on the application equipment, weather and aircraft. Careful selection of spray nozzles is critical to achieve desired dose levels, since droplet size must be controlled. Many nozzles used for agricultural spraying are of low capacity and produce too fine a spray. Avoid nozzles that produce a mist or fog. No nozzle may be necessary if the aircraft travels at 120 mph (104 knots) or more, since the air shear at these speeds will be sufficient to break the chemical stream into appropriately-sized droplets.
For boat spraying (spray boom), COREXIT® EC9500B may also be applied by workboats equipped with spray booms mounted ahead of the bow wake or as far forward as possible. The most effective method of application from a workboat could be the use of a low-volume, low-pressure pump. Spray equipment designed to provide a diluted dispersant solution to the spray booms can also be used. Dispersant concentrations in the 5 to 10 percent range are recommended; lower concentrations may result in significant fall-off in effectiveness. COREXIT® EC9500B should be applied as droplets, not fogged or atomized. Natural wave or boat wake action usually provides adequate mixing energy to disperse the oil. Water from a fire hose can also be used for agitation of the treated slick.
For boat spraying (fire monitor), a slightly modified fire monitor may be useful for applying dispersant concentrates such as COREXIT® EC9500B from a boat. A screen cap is used on the nozzle of the monitor to obtain a uniform spray pattern with the proper sized droplet. Due to the volume output and the greater reach of the fire monitor, significantly more area can be covered in a shorter period of time than using conventional spray booms.
System Calibration – To facilitate successful application and dosage control, calibrate spray systems at the temperatures anticipated. Application at sub-freezing temperatures may require larger nozzle, supply lines and orifices due to higher product viscosity.
2. Concentration/Application Rate:
A treatment rate of about 2 to 10 U.S. gallons per acre, or a dispersant to oil ratio of 1:50 to 1:10 is recommended; lower concentrations may also be used. This rate varies depending on the type of oil, degree of weathering, temperature, and thickness of the slick.
3. Conditions for Use:
COREXIT® EC9500B can be used on oil spills in salt waters and at any water temperature. The product can be used on most oils, weathered spills, and "chocolate mousse" (water-oil emulsions). Viscous oil may require higher dosage rates.

VII. TOXICITY AND EFFECTIVENESS
a. Toxicity
Material Tested Species LC50 (ppm)
COREXIT® EC9500B Menidia beryllina
Mysidopsis bahia
29.13 96-hr
10.00 48-hr
 
No. 2 Fuel Oil Menidia beryllina
Mysidopsis bahia
7.54 96-hr
2.51 48-hr
 
COREXIT® EC9500B & No. 2 Fuel Oil (1:10) Menidia beryllina
Mysidopsis bahia
4.46 96-hr
2.13 48-hr
 
Reference Toxicant (SLS) Menidia beryllina
Mysidopsis bahia
12.19 96-hr
10.53 48-hr
 

b. Effectiveness:
SWIRLING FLASK DISPERSANT EFFECTIVENESS TEST WITH SOUTH LOUISIANA (S/L) AND PRUDHOE BAY (P/B) CRUDE OILS
Oil Effectiveness (%)
Prudhoe Bay Crude 57.0%
South Louisiana Crude 50.9%
Average of Prudhoe Bay and South Louisiana Crudes 53.9%

VIII. MICROBIOLOGICAL PROPERTIES
NA

IX. PHYSICAL PROPERTIES
1. Flash Point: 164°F
2. Pour Point: -44.0°F
3. Viscosity: 21.78 cSt at 40°C
4. Specific Gravity: 0.9626 at 15°C
5. pH: 6.29
6. Chemical Name and Percentage by Weight of the Total Formulation: CONFIDENTIAL
7. Surface Active Agents: CONFIDENTIAL
8. Solvents: CONFIDENTIAL
9. Additives: None
10. Solubility: Miscible

X. ANALYSIS FOR HEAVY METALS, CYANIDE, AND CHLORINATED HYDROCARBONS
Compound Concentration (ppm)
Arsenic 0.0108
Cadmium <0.0020
Chromium <0.0060
Copper <0.0060
Lead <0.0040
Mercury <1.0000 (ug/L)
Nickel <0.0100
Zinc <0.0060
Cyanide <0.0100
Chlorinated Hydrocarbons 1.7600



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