MAXISTAB Alk Stabilizer For NEU-TRI Solvent

MAXISTAB™ Alk stabilizer is a specially blended formulation of stabilizers for use with NEU-TRI™ solvent. NEU-TRI solvent is a vapor degreasing grade of Trichloroethylene. During use, vapor degreasing solvents are subjected to numerous environmental stresses which can lead to solvent breakdown and acidic conditions. Stabilizers are added to vapor degreasing grades of chlorinated solvents to neutralize acidic conditions and allow the solvent to continue to function properly. In low emission degreasing systems, stabilizers are depleted faster than they are replenished by the addition of fresh solvent. MAXISTAB Alk stabilizer for NEU-TRI solvent can be used to raise the reserve alkalinity of the solvent.

See the Safety Data Sheet for safety and handling information. 24-hour emergency phone number: 989-636-4400.

For additional technical assistance: 1-800-447-4369.

MAXISTAB Alk stabilizer for NEU-TRI solvent is available in 5 gallon and 1 gallon pails. To order, call: 1-800-232-2436, ext. 1348 or 1352, or contact your Dow representative.

Alkalinity Adjustment for NEU-TRI Solvent

Using the information from the Reserve Alkalinity Test, and the volume of solvent in the degreaser system, find the appropriate amount of MAXISTAB Alk stabilizer for NEU-TRI solvent to add to the system. (See Chart 1 below.)

MAXISTAB should be added to the solvent reservoir so that it is quickly mixed into the solvent and will be rapidly distributed throughout the system.

After making the addition, allow the solvent to mix throughout the system, then retest the reserve alkalinity levels.

Alkalinity

The optimal operating range for reserve alkalinity of NEU-TRI solvent is between 10 and 20 ppm.

MAXISTAB Alk stabilizer has been specially designed for alkalinity adjustments of NEU-TRI solvent.

Acid Acceptance Test Result Action Required Test Frequency Recommended
Acceptable Greater than 8 ppm reserve alkalinity Continue normal operations Test 1 to 2 times per week
Marginal Reserve alkalinity values between 4 and 8 ppm Add MAXISTAB for alkalinity Test daily until corrected
Unacceptable Less than 4 ppm reserve alkalinity Add MAXISTAB for alkalinity or change out solvent Test daily until corrected
 

Chart 1. Alkalinity for NUE-TRI Solvent

  • Determine the alkalinity of the solvent using the Dow Reserve Alkalinity Test Kit.
  • Determine the volume of solvent in the degreaser system.
  • Using the volume from the graduated cylinder or the reserve alkalinity value, read the intersection of the line to obtain the conversion factor. Read either the gallons conversion factor on the right of the chart, or the milliliter conversion factor on the left of the chart. The conversion factor times the volume of solvent in the degreaser determines how much MAXISTAB Alk stabilizer for NEU-TRI solvent to add to the system.
  • For example, if you are operating a 125 gallon vapor degreaser and you obtain a reserve alkalinity test result of 4 ml (4.5 ppm reserve alkalinity):

  • (Gallons of solvent in the degreaser system) X (Conversion Factor)

    Volume reading of 4 ml or reserve alkalinity of 4.5 ppm =
    .0089 gallons conversion factor (cf) or 11 milliliters conversion factor (cf)
    .0029 (cf) X 125 gallons of solvent = .3625 gallons of MAXISTAB Alk stabilizer
    or,
    11 (cf) X 125 gallons of solvent = 1375 milliliters or 1.375 liters of MAXISTAB Alk stabilizer.


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