CSW-30 Industrial Calcium Sulfate Whiskers for Plastic, Rubber, Coatings and Papermaking
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ColorWhitePhysical formWhiskers , Powder
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CAS No.7778-18-9Purity98%min
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AppearanceWhite PowderApplicationplastic, rubber, coating, paint, papermaking, Powder coating, paint, rubber, plastic, etc.
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ClassificationSulphateEINECS No.231-900-3
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Grade StandardIndustrial GradeMolecular FormulaCaSO4
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Other NamesCaSO4TypeCalcium Sulfate Whisker
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Model NumberCSW-30Product nameCalcium Sulfate
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CaSO4 content>98%Whiteness≥ 92 %
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CetificateISO 9001; REACHHs code2833299090
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pH6-7Melting point1450 ℃
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Refractive index1.585density2.69g/cm3
For a whisker-material enquiry, chemical composition and physical form need to be assessed together. CSW-30 is an industrial white calcium sulfate whisker powder identified for plastic, rubber, coating, paint, powder coating and papermaking evaluation. Its stated minimum purity is 98%.
Confirm the supplied CSW-30 phase and dimensions
Request the hydrate phase and water-content basis for the actual sample. Ask for whisker length, diameter and the method used to describe their distribution. The chemical name alone does not define geometry or how the material will respond to the proposed processing conditions.
Keep the assay and optical thresholds in context
Stated calcium sulfate content is greater than 98%, whiteness is at least 92% and pH is 6–7. Obtain the current composition report and the optical and pH procedures before comparing grades. Assay thresholds should be assessed using their declared basis rather than treated as evidence of a particular hydrate phase.
Match the evaluation to the actual process
Describe the polymer, coating binder or papermaking system in the enquiry. Identify the processing conditions and finished-material tests that will determine acceptance. Confirm phase stability and morphology through relevant evidence before drawing conclusions about reinforcement or thermal behaviour.
- Review current phase, composition and whisker-dimension reports for the sample.
- Run a controlled comparison in the intended formulation and record the agreed results.
- Request applicable documentation and keep it with the material actually evaluated.
These steps make the sample assessment specific to the project. They do not replace the required formulation testing.
