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  • What packaging materials do you use?

    Most of the products on this webshop are packed in Polyethylene (LDPE) bags. The bags are stacked on a wooden pallet (max. 40 bags) and wrapped with shrink foil to ensure stability and protection.
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  • Can I buy your product in Big Bags / Supersacks?

    Yes, we do have most products in Big Bags / Supersacks. The typical weight of these bags is 500 kg and we can stack two big bags on a pallet. Please contact us, if you are interested in this packaging option.
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  • What is synthetic hydrotalcite?

    Hydrotalcite is a layered material consisting of positively charged hydroxide layers and charge balancing interlayer anions. These interlayer anions are weakly bound and mobile, which gives Hydrotalcite anion exchange capabilities. This has resulted in a
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  • Your products are inorganic. How is proper dispersion in polymer matrices ensured?

    We apply hydrophobic surface agents in order to increase the affinity with polymer systems. This ensures maximum dispersibility and therefore functionality.
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  • Are you open to suggestions for product development?

    We most certainly are! Please get in touch with us, so we can introduce you to our R&D scientists in Japan or the Netherlands.
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  • How do you control the quality standard of your products?

    All products that leave our factory are tested by our Quality Assurance laboratory. Only products that are within the (narrow) specified parameters, are cleared for sales.
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  • Can I get a small sample of your products before ordering?

    Please contact us to request a product sample.
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  • Are your products environmentally harmful?

    Not at all! Most of our product are environmentally benign. The main consistuent of our products is Magnesium. Other components are Aluminium, Carbonate and optionally, Zinc.
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  • Who is Kisuma Chemicals?

    We manufacture highly pure synthetic magnesium products. Our factory is located in Veendam, the Netherlands.
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  • What is your relation to Kyowa Chemical Industry?

    We are a 100% subsidiary of Kyowa Chemical Industry, Japan. We are manufacturing products under license of their patents for markets in the Americas, Europe, the Middle East and Africa.
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  • What is your Trade Register number?

    Kisuma Chemicals is registered at the Dutch Chambre of Commerce under this number: 02061424
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  • What is your VAT number?

    NL 8065.00.116.B01
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  • Is your production process harmful to the environment?

    No, our production process and the raw materials we use is relatively safe for the environment. Safety for people and the environment is considered a key aspect at Kisuma Chemicals.
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  • What is your Returns policy?

    All sales of products that are within the specification on our TDS, are final. However, if you are unhappy with the peformance of our products, please contact us to discuss your complaint and potential remedies.
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  • Which substances can be deactivated by your hydrotalcite products?

    Basically all anions that fit in the interlayer region, including but not limited to: Chloride, Bromide, Sulfate, Fluoride, Iodide, Phosphate, Nitrate, Borate, Benzoate, Acetate. Furthermore, hydrotalcites have a neutralizing effect as well due to their a
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  • Can any of your products solve odor problems during my production process?

    Yes. Odor problems are often caused by acid residuals. We recommend you to look at our acid scavenger DHT-4A.
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  • What dosage level is recommended for your hydrotalcites?

    This depends on the amount of free acid groups that are present in your process or application. As a rule of thumb, we recommend a dosage of 10 parts hydrotalcite to 01 part of free acid.
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  • Why should I add DHT-4A during my Polyolefin production process?

    DHT-4A is able to irreversible deactivate chloride, derived from polymerization catalysts. This prevents corrosion problems of production and processing equipment.
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  • Why should I add Alcamizer to my PVC formulations?

    PVC consists of approximately 60% Hydrochloric acid. During processing of PVC, this is released which results in degradation of the polymer. This is an autocatalytic process. Alcamizer products are able to significantly delay this process, so that PVC can
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  • Can I use your products for food contact applications?

    Yes, most of our products can be used in packaging used for direct food contact. Please contact us for specific questions and certifications.
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