Corrosion Additives for Shell Corena De Compressor Oil

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Purpose: Determine compatibility of Cortec Corrosion inhibiting additives with Shell Corena DE compressor oil.

Materials: Shell Corena DE compressor oil

M-529

VpCI-326

VpCI-322

Method: Standardized Compatibility Test

Procedure: The following samples were created:

Sample

Base Oil

(Percent by weight)

Cortec Oil

(Percent by weight)

A1

Shell Corena DE

97

M-529

3

B1

Shell Corena DE

95

M-529

5

C1

Shell Corena DE

90

M-529

10

D1

Shell Corena DE

90

VpCI-322

10

E1

Shell Corena DE

90

VpCI-326

10

The following procedure was followed:

    1. The samples were mixed and observed
      1. Compatibility is rated as a homogenous mixture with no gelling, precipitates, adverse reactions, or other deleterious affects
      2. The sample is listed as ok if considered compatible.
    2. The samples are cycled, 8 hours at 0° C and 16 hours 50° C, and observed at the different intervals. This is considered one cycle and the test is three cycles in duration.

Results: The following results were found:

Compatibility

Sample

Initial

8 hours

24 hours

32 hours

48 hours

56 hours

72 hours

A1

ok

ok

ok

ok

ok

ok

ok

B1

ok

ok

ok

ok

ok

ok

ok

C1

ok

ok

ok

ok

ok

ok

ok

D1

ok

ok

ok

ok

ok

ok

ok

E1

ok

ok

ok

ok

ok

ok

ok

Conclusion: Shell Corena DE compressor oil is considered compatible with M-529, VpCI-322, and VpCI-326 at the concentrations listed above.

Project #: 02-203-1325

Estimated Cost of Project: 2.5 hours

To: Mark Richler, Israel Richler Trading Ltd

From: Brian L. Wuertz

Date: 09-16-2002

cc: Boris Miksic

Anna Vignetti

Art Ahlbrecht

Cliff Cracauer

Vanessa Schultz

Ashish Gandhi

Bob Boyle