Calcium Oxide CaO 93%-95% Powder for Defoaming Masterbatch, PVC Drying and Plastic Rubber Moisture-Control Evaluation
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ColorWhitePhysical formMasterbatch , Powder
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CAS No.1305-78-8Purity93%-95%
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Appearancewhite powderApplicationMoisture absorption, drying, defoaming
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ClassificationCalcium OxideEINECS No.215-138-9
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Grade StandardIndustrial GradeMolecular FormulaCaO
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Other NamesQuicklime
Masterbatch developers should distinguish a calcium oxide raw powder from a completed compounded additive. This industrial CaO is supplied as white powder with a stated 93%-95% purity range. Its intended enquiries cover moisture absorption, drying and defoaming, including PVC and other plastic or rubber projects.
Choose the powder stage of the masterbatch enquiry
The starting material here is calcium oxide powder, not a defined carrier-resin formulation. Describe the downstream system you are developing and the raw-material criteria it must meet. Do not assume a particular resin, granule form or compounded grade from the masterbatch application name.
Read the 93%-95% assay independently from moisture-control performance
Chemical purity provides one comparison point for the raw material. Ask for batch analysis, particle measurements and the test evidence relevant to the intended drying or defoaming task. The assay range is not an absorption-capacity figure, an additive dose or a prediction of the finished compound's behaviour.
Qualify PVC, plastic and rubber projects on their own terms
Identify the polymer system and the outcome the trial will measure. Use controlled sample evaluation to decide whether the proposed powder meets those requirements. A purpose such as moisture absorption does not guarantee fewer defects or compatibility with every formulation.
The supplied chemical identifier is CAS 1305-78-8, with the formula CaO. Keep that identity and the white-powder form attached to the sample specification and handling documents. Request a defined whiteness test if colour matters to the comparison; visible white appearance alone does not establish a numerical whiteness result.
