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topic 10069

Aluminum Blue 2LW Dye

I am in the process of testing per ASTM B136-84 [link by ed. to spec at TechStreet] (Dye Stain Test) which requires the use of aluminum blue 2LW dye. The ASTM spec offers a footnote referencing a supplier as a source for this chemical that is no longer in business.

Does any one have a current source for chemical?

Stephen Keller
- Hunt Valley, Maryland


With all of the consolidations in the metal finishing businesses, it is very hard to keep up with. That dye is manufactured by Clariant Corp in Charlotte, NC. This dye likes to mold as bad as coffee does, so do not make up any more than you can use in a week or so, or keep it in the refrigerator.

James Watts
- Navarre, Florida

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