NA4387 and NA4388 Barium Sulfate Matting Powder for Paint, Coating, Ink, Rubber and Plastic Filler Enquiries
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ColorWhitePhysical formPowder
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CAS No.7727-43-7Purity85%
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Appearancewhite powderApplicationPaint, Coating, Ink, Rubber, Plastic Filler
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ClassificationSulphateEINECS No.231-784-4
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Grade StandardIndustrial GradeMolecular FormulaBaSO,4
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Other NamesBariteTypeBarium Sulfate
NA4387 and NA4388 are two particle-labelled barium sulfate options for matting-filler enquiries. This industrial white powder is intended for paint, coating, ink, rubber and plastic formulations, with the selected grade and finish criteria to be agreed for the project.
Compare the two stated D50 limits
NA4387 is designated Ultra-Fine Matte Barium Sulfate with D50 ≤2.5μm. NA4388 is designated Standard Extinct Barium Sulfate with D50 ≤4.0μm. Request the full distribution and measurement method for each candidate; D50 does not describe the largest particle that may be present.
- NA4387 enquiry
- Keep the ≤2.5μm D50 designation attached to this model.
- NA4388 enquiry
- Keep the ≤4.0μm D50 designation attached to this model.
Confirm the assay specification
Ask how the 85% assay statement applies to the actual offered grade, including whether it is a minimum requirement or another reporting basis. Obtain the associated batch analysis and test method. A numerical assay and a particle percentile answer different selection questions and should remain separately documented.
Choose against the intended matting result
Describe the binder or polymer system and define the surface appearance you need. Compare representative samples under relevant formulation conditions before accepting a finish benefit. Request matched technical and safety information and retain the sample identity with the test record, so the chosen model is supported by its own evidence rather than an assumed gloss reduction from the matting designation.
