**Page 1**  **of 3** 

**Disclaimer of Liability:** Baker Petrolite Corporation and its affiliates (BPC) disclaim all warranties or representations express or implied, including any implied warranties of merchantability or fitness for a particular purpose or to the accuracy, correctness or completeness of such information herein or that reliance on such information will accomplish any particular result. All such information is furnished “as is” and by using such information the user is assuming all liabilities for the use or reliance on such information. BPC SHALL NOT BE LIAB LE FOR ANY IND IRECT, SPECIAL, PUNITIVE, EXEMPLARY OR CONSEQUENTIAL DAMAGES OR LOSSES FROM ANY CAUSE WHATSOEVER INC LUDING BUT NOT LIMITED TO ITS NEGLIGENCE. **Executive Summary :**  The formula for MFA
- 10 has been modified , which impacts the Octamix waiver associated with this product. A modification to this waiver is being pursued. Part of this process is to provide the EPA with corrosion testing to demonstrate product efficacy
. As such, corrosion testing was conducted on the original and modified MFA
- 10. (The modified version is being called TOLADTM MFA
- 10A.) The testing was based upon prescribed conditions set forth in a document detailing the waiver and treat rate approved in this waiver. According to the waver, the following conditions must be met: The final fuel consists of a maximum of five percent by volume methanol, a minimum of 2.5 percent by volume co -solvent in unleaded gasoline. The co -solvents are any one or a mixture of ethanol, propanols, butanols, pentanols, hexanols, heptanols and octanols, within the following constraints: the ethanol, propanols and butanols or mixtures thereof must compose a minimum of 60 percent by weight of the co -solvent mix, whereas a maximum limit of 40 percent by weight of the co -solvent mix is placed on the pentanols, hexanols, heptanols and octanols or mixtures th ereof. Furthermore, the heptanols and octanols are limited to a maximum five percent by weight of the higher molecular weight alcohol mix (pentanols, hexanols, heptanols and octanols). Based on this guidance, an “octamix” blend was prepared in the lab consisting of 92.5% regular unleaded gasoline, 5% methanol and 2.5% denatured fuel grade ethanol. This mixture did not prove to be significantly corrosive, so testing was also conducted on the gasoline alone, as well as a mixture of gasoline and fuel ethanol. Also, due to the lack of corrosivity of the “octamix” blend , some common corrosive agents were added to facilitate product comparison and testing
. Based on the testing conducted, the two formulations TOLADTM MFA
- 10 and TOLADTM MFA
10A are equivalent in performance. See Table s 1 & 2 for test results. **Test Method :**  NACE Standard TM

- 01
- 72 : Anti
-Rust Properties of Cargoes in Petroleum Product Pipelines Three hundred milliliters of the test sample was measured into a chemically c lean and dry beaker. After preparation by p olishing, the steel test specimen was immersed in the test fuel solution, together with thermometer and stirrer, and placed into the water bath previously heated to 38 ± 1°C (100 ± 2°F). After stir ring for 30 minutes, 30 ml of distilled water was added. S tirring of the sample continued for an additional 3.5 hours before the final inspection was made with a lighted glass of 2x magnification. The test spindles were rated according to the scale in Table 2. 

### NA**CE Testing of MFA -**  **10 additive** **Page 2**  **of 3** 

**Disclaimer of Liability:** Baker Petrolite Corporation and its affiliates (BPC) disclaim all warranties or representations express or implied, including any implied warranties of merchantability or fitness for a particular purpose or to the accuracy, correctness or completeness of such information herein or that reliance on such information will accomplish any particular result. All such information is furnished “as is” and by using such information the user is assuming all liabilities for the use or reliance on such information. BPC SHALL NOT BE LIAB LE FOR ANY IND IRECT, SPECIAL, PUNITIVE, EXEMPLARY OR CONSEQUENTIAL DAMAGES OR LOSSES FROM ANY CAUSE WHATSOEVER INC LUDING BUT NOT LIMITED TO ITS NEGLIGENCE.

. **Table 1 NACE**  **TM -**  **01 -**  **72 Corrosion**  **Test Results Product**  **Treat Rate Rating**  **(“Octamix”) Rating (gasoline** 

**+ 2.5% EtOH) Rating** 

**(gasoline only) None**  0 B++ C D **TOLADTM MFA** **- 10**  42.7 mg/L A A A **TOLADTM MFA** **- 10** **A** 42.7 mg/L A A A **Table 2 NACE TM** **- 01**  **- 72 Corrosion Test Results**  **Product Treat Rate**  **Rating (“Octamix”)**  ***** **Rating**

**(“Octamix”)** ****** **None** 0 C D **TOLADTM MFA** **- 10**  42.7 mg/L B+ B **TOLADTM MFA** **- 10** **A** 42.7 mg/L B+ B * Increased corrosivity due to addition of formic & acetic acids * * Increased corrosivity due to addition of formic & acetic acids and sodium chloride **Table 3**  **NACE TM -**  **01 -**  **72 Test Rating Scale**  **Rating Percentage of Test Surface Rusted**  **A None**  **B++ Less that 0.1% (2 or 3 spots of no more than 1 mm diameter)**  **B+ Less than 4%**  **B 5 to 25%**  **C 25 to 50%**  **D 50 to 75%**  **E 75 to**  **100%**
**Conclusions/Recommendations:** TOLADTM MFA
- 10 and TOLADTM MFA
- 10A , were shown to be equivalent in performance. As such, the TOLADTM MFA
- 10A formula should be acceptable for submission to the EPA for modification of the existing waiver.**Page 3**  **of 3** 

**Disclaimer of Liability:** Baker Petrolite Corporation and its affiliates (BPC) disclaim all warranties or representations express or implied, including any implied warranties of merchantability or fitness for a particular purpose or to the accuracy, correctness or completeness of such information herein or that reliance on such information will accomplish any particular result. All such information is furnished “as is” and by using such information the user is assuming all liabilities for the use or reliance on such information. BPC SHALL NOT BE LIAB LE FOR ANY IND IRECT, SPECIAL, PUNITIVE, EXEMPLARY OR CONSEQUENTIAL DAMAGES OR LOSSES FROM ANY CAUSE WHATSOEVER INC LUDING BUT NOT LIMITED TO ITS NEGLIGENCE.

. **Figure 1**  **Photo of**  **T est**  **S pi** **ndle in**  **U ntreated**  **Fuel (“Octamix”)**  **vs. “Octamix”**  **Treated with**  **TOLAD TM**  **MFA -**  **10 and TOLADTM MFA** **- 10A** 

**Table 4 Physical Properties of TOLADTM MFA -**  **10A Viscosity @ 100oF (c**  **St )**  1 7.5 **Viscosity @ 32 oF (cSt** **)** 92.7 **Viscosity @ 0oF (cSt )**  294.2 **Specific Gravity, 60oF** 0.9144 **Ash Content (wt%)** 0.02 **Flash Point, PMCC (oF)** 98 **Appearance** Clear, dark amber liquid **Treat Level (minimum)** 25 ppm **Treat Level (average)**  50 ppm **Treat Level (maximum)** 300 ppm Untreated Treated with

TOLADTM MFA
- 10 Treated with TOLADTM MFA
- 10 A