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Trial Number 0

Trial Purpose:

List of alternatives to 1,1,1-trichloroethane.

Date Run:

01/23/1998

Experiment Procedure:

QUESTION #: 1
SUBSTRATE MATERIAL: Stainless Steel, Brass, others
QUESTION ASKED: This is a request for information on alternatives to using 1,1,1-trichloroethane. Our investigation for an alternative includes a direct replacement for 1,1,1-trichloroethane, as well as aqueous and non-aqueous processes. Enclosed you will find specification information on MVR-the model of the vapor degreasers we currently use.

For our critical cleaning applications, parts are placed in a vapor degreaser using TCA. On one of our products, this process is augmented by ultrasonic scrubbing in distilled TCA.
Our standard cleaning procedure for critically cleaned components is similar to CGA standard 4.1 Cleaning procedures for oxygen service. However, we limit residue to a maximum of 10 mg per square foot of component surface. No amount of latent moisture, films, oils, or visible particulates are permitted. Additionally, our oxygen cleaning specification requires ultraviolet visual inspection for particulates - none are permitted. The metallic components we clean in TCA vary from small, easily cleaned pins, springs, etc., to more complex components (valve bodies, pistons, etc.) which have small passages. The materials we clean in TCA include austenetic (300 series) stainless steels, precipitation hardening stainless steels, free machining brass, nickel alloys (nickel, hastalloy, inconel, monel) and occasionally some cobalt alloys (eligiloy). Along with your recommendations, please include product information, material safety data sheets, equipment required, and pricing information.

Trial Results:

RESPONSE/ANSWER: In 1998, the Massachusetts Toxics Use Reduction Institute (TURI) will publish the results of the tests conducted at the Institutes Surface Cleaning Laboratory (SCL) in a searchable database/spreadsheet format.  This should make alternative cleaner selection faster and easier.  Here are the results of your query, based on the information supplied:

SCL # Substrate Contaminant  Mechanism Cleaner
95‑410‑01‑2 SS METAL ULTRASONICS WR GRACE
95‑410‑01‑2 SS OIL ULTRASONICS WR GRACE
96‑422‑01‑2 SS CARBON ULTRASONICS DELTA OMEGA TECH
97‑539‑03‑4 SS LUBRICANT ULTRASONICS OAKITE
97‑539‑03‑4 SS LUBRICANT ULTRASONICS US POLYCHEM
97‑539‑03‑4 SS LUBRICANT ULTRASONICS WR GRACE
97‑540‑03‑2 SS BUFFING ULTRASONICS WR GRACE
97‑540‑03‑2 SS FINGERPRINTS ULTRASONICS WR GRACE
97‑540‑03‑2 SS OIL ULTRASONICS WR GRACE
97‑547‑01‑2 SS OIL ULTRASONICS FINE ORGANICS
97‑547‑01‑2 SS OIL ULTRASONICS WR GRACE
97‑549‑01‑2 SS OIL ULTRASONICS CHURCH & DWIGHT
97‑549‑01‑2 SS OIL ULTRASONICS GENERAL CHEMICAL
97‑549‑01‑2 SS OIL ULTRASONICS MACDERMID
97‑549‑01‑2 SS OIL ULTRASONICS OAKITE
97‑549‑01‑2 SS OIL ULTRASONICS WR GRACE
98‑440‑04‑4 SS BUFFING ULTRASONICS WR GRACE
98‑440‑04‑4 SS FINGERPRINTS ULTRASONICS WR GRACE
98‑440‑04‑4 SS OIL ULTRASONICS WR GRACE
         
SCL # Substrate Contaminant  Mechanism Cleaner
95‑405‑04‑2* BRASS GREASE IMMERSION OAKITE
95‑405‑04‑2* BRASS OIL IMMERSION OAKITE
95‑407‑04‑2 BRASS WAX IMMERSION OAKITE
95‑407‑07‑2 BRASS LUBRICANT IMMERSION AW CHESTERTON
95‑407‑07‑2 BRASS OIL IMMERSION AW CHESTERTON
95‑407‑07‑2 BRASS WAX IMMERSION AW CHESTERTON
96‑414‑04‑2 BRASS NONE COMPATIBILITY CALGON
96‑414‑04‑2 BRASS NONE COMPATIBILITY WR GRACE
96‑414‑06‑2 BRASS BUFFING SPRAY WR GRACE
96‑433‑01‑8 BRASS BUFFING IMMERSION ARDROX

Success Rating:

Technology Transfer.

Conclusion:

Cleaning projects vary from case-to-case.  To obtain more detailed information about any of the listed trials, have the SCL # ready when contacting the lab at (978)934-3133.

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