None of National Fiber's products contain sulfates, but they're pretty much a northeastern regional player. Any vendor's "stabilized forumula" designated for wet-sprayed applications will also be sulfate free, and is fine to dry-blow. Greenfiber's stabilized borate-only goods are products # INS735 for the general-purpose type, INS745 for the attic-specific version: http://www.greenfiber.com/images/technicaldocuments/426201193636AMPM-6.3-316%20Rev%20B%20INS745%20Attic%20Card.pdf http://www.greenfiber.com/images/technicaldocuments/81201121208PMMS-6.4-060%20Rev%20C%20Stabilized%20Borate%20Formula.pdf http://www.greenfiber.com/images/technicaldocuments/10122009105133PMPM-6.3-56.pdf http://www.greenfiber.com/images/technicaldocuments/128201084952AMMS-6.4-05%20Rev%20E%20MSDS%20GF%20INS735%20Stabilized%20Borate%20Formula.pdf Stay away from the "stablilized blended" formulations, which may contain ammonium sulfate, eg: http://www.greenfiber.com/images/technicaldocuments/81201115803PMMS-6.4-059%20Rev%20B%20Stabilized%20Blended%20Formula.pdf Applegate (a MI manufacturer) makes an all-borate stabilized goods: http://www.applegateinsulation.com/Product-Info/Insulation-Products/Bora-Spray/default.aspx Pull the MSDS sheet on any potential product and scan the document for "sulfate".
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